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general description the max1562/max1562h/max1563 single current- limited switches provide up to 4a to power up to eight usb ports. they operate from a 4v to 5.5v input supply and consume only 40? of quiescent current when operating and only 3? in shutdown. the max1562/max1562h/max1563s?autoreset feature latches the switch off if the output is shorted, thereby saving system power. when the short is removed, the switch is reactivated. a fault-blanking feature enables the circuit to ignore momentary faults, such as those caused when hot swapping a capacitive load, preventing false alarms to the host system. fault blanking also prevents fault signals from being issued when the device powers up the load. the max1562/max1562h/max1563 provide several safety features to protect the usb port. built-in thermal- overload protection turns off the switch when the die temperature exceeds +160?. accurate internal cur- rent-limiting circuitry protects the input supply against both overload and short-circuit conditions. an open- drain fault signal ( fault ) notifies the microprocessor when a thermal-overload, current-limit, undervoltage lockout (uvlo), or short-circuit fault occurs. the max1562 has an active-low on , and the max1562h has an active-high on enable input. the max1563 has a selectable active-high or active-low logic-controlled enable. the current limit is pro- grammed from 1a to 4a using a resistor. the max1562/max1562h are available in 8-pin so packages and are pin-compatible upgrades to the mic2545a/mic2549a. the max1563 provides the same features and higher current performance in a smaller 12-pin (4mm x 4mm) thin qfn package. these devices operate over an extended temperature range (-40? to +85?). an evaluation kit is available to speed designs. applications notebook computers desktop computers usb ports and hubs pdas and palmtop computers docking stations features programmable current limit (1a to 4a) with resistor autoreset feature saves system power 20ms fault-blanking circuitry active-high/low control logic fault-indicator output thermal-overload protection smaller 4mm x 4mm thin qfn package (max1563) 3? shutdown current ul certification pending max1562/max1562h/max1563 programmable 4a usb current-limited switches with autoreset and fault blanking ________________________________________________________________ maxim integrated products 1 ordering information 19-2631; rev 1; 7/09 for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. evaluation kit available pin configurations appear at end of data sheet. part temp range pin-package max1562 esa+ -40? to +85? 8 so max1562h esa+ -40? to +85? 8 so max1563 etc+ -40? to +85? 12 tqfn-ep* 4mm x 4mm max1562 max1562h max1563 fault out out iset sel on in in usb port gnd input 4v to 5.5v max1563 only active-high/active-low selectable typical operating circuit + denotes lead(pb)-free/rohs-compliant package. * ep = exposed pad.
max1562/max1562h/max1563 programmable 4a usb current-limited switches with autoreset and fault blanking 2 _______________________________________________________________________________________ absolute maximum ratings electrical characteristics (v in = +5v, c in = 1?, c out = 4.7?, t a = 0c to +85c , unless otherwise noted. typical values are at t a = +25?.) stresses beyond those listed under ?bsolute maximum ratings?may cause permanent damage to the device. these are stress rating s only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specificatio ns is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. in, on, on , iset, sel, out to gnd .......................-0.3v to +6v fault to gnd .............................................-0.3v to (v in + 0.3v) in to out..................................................................-0.3v to +6v out maximum continuous switch current ............................5a fault dc current ..............................................................10ma continuous power dissipation 8-pin so (derate 5.9mw/? above +70?)..................471mw 12-pin thin qfn (4mm x 4mm) (derate 16.9mw/? above +70?) .............................1350mw operating temperature range ...........................-40? to +85? junction temperature ......................................................+150? storage temperature range .............................-65? to +150? lead temperature (soldering, 10s) .................................+300? parameter sym b o l conditions min typ max units supply voltage range v in 4.0 5.5 v switch on-resistance r on 26 50 m standby supply current switch disabled 3 10 a quiescent supply current i in switch enabled, i out = 0 40 80 a out off-leakage current i lkg switch disabled, v out = 0 0.02 10 ? undervoltage-lockout threshold v uvlo rising edge, 3% hysteresis 2.9 3.4 3.8 v max1563 1 4 continuous current-limit adjust range max1562/max1562h 1 3 a r iset = 4.22k (max1563 only) 3.2 4 4.8 r iset = 5.76k 2.4 3 3.6 r iset = 8k 1.7 2.1 2.6 continuous current limit i lim v in - v out = 0.5v r iset = 12k 1.1 1.4 1.7 a 4.9 a(peak) r iset = 4.22k (max1563 only) 1.6 a(rms) 2.5 3.6 4.7 a(peak) r iset = 5.76k 1.4 a(rms) 1.2 1.7 2.3 a(peak) short-circuit current limit i lim v out = 0, i out pulsing r iset = 12k 0.4 a(rms) short-circuit detect threshold (note 1) 1 v continuous current-limit blanking timeout period from continuous current-limit condition to fault asserted 10 20 35 ms short-circuit blanking timeout period from short-circuit current-limit condition to fault asserted 7.5 18 35 ms turn-on delay t on r out = 2 , c out = 4.7? (from on to 10% of v out ) 0.5 1.2 4.0 ms output rise time t rise r out = 2 , c out = 4.7? (from 10% to 90% of v out ) 2.5 ms turn-off delay t off r out = 2 , c out = 4.7? (from on to 90% of v out ) 0.1 3 ms
max1562/max1562h/max1563 programmable 4a usb current-limited switches with autoreset and fault blanking _______________________________________________________________________________________ 3 electrical characteristics (continued) (v in = +5v, c in = 1?, c out = 4.7?, t a = 0c to +85c , unless otherwise noted. typical values are at t a = +25?.) parameter sym b o l conditions min typ max units output fall time t fall r out = 2 , c out = 4.7? (from 90% to10% of v out ) 0.8 ms thermal-shutdown threshold 15? hysteresis +160 ? on, on , sel input high level v ih v in = +4v to +5.5v 2 v on, on , sel input low level v il v in = +4v to +5.5v 0.8 v on, on , sel input leakage current -1 +1 ? fault output low voltage v ol i sink = 1ma, v in = +4v 0.4 v fault output high leakage current v in = v fault = +5.5v 1 a out autoreset current in latched-off state, v out = 0 10 25 45 ma out autoreset threshold in latched-off state, out rising 0.35 0.5 0.65 v out autoreset blanking time in latched-off state, v out > 0.5v 10 20 35 ms electrical characteristics (v in = +5v, c in = 1?, c out = 4.7?, t a = -40c to +85c , unless otherwise noted.) (note 2) parameter sym b o l conditions min typ max units supply voltage range v in 4.0 5.5 v switch on-resistance r on 50 m standby supply current switch disabled 10 ? quiescent supply current i in switch enabled, i out = 0 80 a out off-leakage current i lkg switch disabled, v out = 0 10 a uvlo threshold v uvlo rising edge, 3% hysteresis 2.9 3.8 v max1563 1 4 continuous current-limit adjust range max1562/max1562h 1 3 a r iset = 4.22k (max1563 only) 3.1 4.9 r iset = 5.76k 2.3 3.7 r iset = 8k 1.6 2.7 continuous current limit i lim v in - v out = 0.5v r iset = 12k 1.0 1.8 a r iset = 5.76k 2.4 4.8 short-circuit current limit i lim v out = 0, i out pulsing r iset = 12k 1.1 2.4 a(peak) continuous current-limit blanking timeout period from continuous current-limit condition to fault asserted 10 35 ms short-circuit blanking timeout period from short-circuit current-limit condition to fault asserted 7.5 35 ms
max1562/max1562h/max1563 programmable 4a usb current-limited switches with autoreset and fault blanking 4 _______________________________________________________________________________________ electrical characteristics (continued) (v in = +5v, c in = 1?, c out = 4.7?, t a = -40c to +85c , unless otherwise noted.) (note 2) parameter sym b o l conditions min typ max units turn-on delay t on r out = 2 , c out = 4.7? (from on to 10% of v out ) 0.5 4.0 ms turn-off delay t off r out = 2 , c out = 4.7? (from on to 90% of v out ) 3ms on, on , sel input high level v ih v in = +4v to +5.5v 2 v on, on , sel input low level v il v in = +4v to +5.5v 0.8 v on, on , sel input leakage current -1 +1 ? fault output low voltage v ol i sink = 1ma, v in = +4v 0.4 v fault output high leakage current v in = v fault = +5.5v 1 a out autoreset current in latched-off state, v out = 0 10 45 ma out autoreset threshold in latched-off state, out rising 0.35 0.65 v out autoreset blanking time in latched-off state, v out > 0.5v 10 35 ms note 1: short-circuit detect threshold is the output voltage at which the device transitions from short-circuit current limit to contin uous current limit. note 2: specifications to -40? are guaranteed by design, not production tested. supply current vs. supply voltage max1562 toc01 supply voltage (v) supply current ( a) 5.0 4.5 4.0 3.5 5 10 15 20 25 30 35 40 45 50 0 3.0 5.5 temp = +25 c temp = -40 c temp = +85 c shutdown current vs. supply voltage max1562 toc02 supply voltage (v) shutdown current ( a) 5.0 4.5 4.0 3.5 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0 3.0 5.5 temp = +25 c temp = -40 c temp = +85 c v on = 5v switch-off leakage current vs. temperature max1562 toc03 temperature ( c) switch-off leakage current (na) 60 35 10 -15 0.01 0.1 1 10 100 1000 0.001 -40 85 typical operating characteristics (v in = +5v, c in = 1?, c out = 4.7?, t a = +25?, unless otherwise noted.)
max1562/max1562h/max1563 programmable 4a usb current-limited switches with autoreset and fault blanking _______________________________________________________________________________________ 5 normalized r on vs. temperature max1562 toc04 temperature ( c) normalized r on 60 35 10 -15 0.8 0.9 1.0 1.1 1.2 1.3 0.7 -40 85 normalized continuous current limit vs. temperature max1562 toc05 temperature ( c) normalized continuous current limit 60 35 10 -15 0.97 0.98 0.99 1.00 1.01 1.02 1.03 0.96 -40 85 turn-on time vs. temperature max1562 toc06 temperature ( c) turn-on time (ms) 60 35 10 -15 0.5 1.0 1.5 2.0 2.5 3.0 0 -40 85 r load = 2 turn-off time vs. temperature (t off + t fall ) max1562 toc07 temperature ( c) turn-off time (ms) 60 35 -15 10 0.5 1.0 1.5 2.0 2.5 3.0 0 -40 85 r load = 2 fault-blanking time vs. temperature max1562 toc08 temperature ( c) fault-blanking time (ms) 60 35 10 -15 20.2 20.4 20.6 20.8 21.0 21.2 21.4 21.6 21.8 22.0 20.0 -40 85 autoreset current vs. temperature max1562 toc09 temperature ( c) autoreset current (ma) 60 35 10 -15 10 20 30 40 0 -40 85 autoreset current vs. v cc max1562 toc10 v cc (v) autoreset current (ma) 5.2 4.9 4.3 4.6 5 10 15 20 25 30 35 40 0 4.0 5.5 overload response into 1.4 max1562 toc11 20ms/div v out v in i out 5v/div 5v/div 2a/div fault 5v/div short-circuit response into 0 max1562 toc12 time (10ms/div) 5v/div 10a/div 5v/div 5v/div v out i out v in v fault typical operating characteristics (continued) (v in = +5v, c in = 1?, c out = 4.7?, t a = +25?, unless otherwise noted.)
max1562/max1562h/max1563 programmable 4a usb current-limited switches with autoreset and fault blanking 6 _______________________________________________________________________________________ typical operating characteristics (continued) (v in = +5v, c in = 1?, c out = 4.7?, t a = +25?, unless otherwise noted.) switch turn-on time max1562 toc13 1ms/div v on (max1562h) v on (max1562) 2v/div 2v/div v out 2v/div r out = 2 switch turn-off time max1562 toc14 400 s/div 2v/div 2v/div r out = 2 2v/div v on (max1562h) v out v on (max1562) startup time (r out = 2 , c out = 4.7 f) max1562 toc15 fault v on 2v/div 5v/div v out 1a/div i out 5v 0v 1ms/div startup time (r out = 2 , c out = 100 f) max1562 toc16 fault v on 2v/div 5v/div v out 1a/div i out 5v 0v 1ms/div startup time (r out = 2 , c out = 330 f) max1562 toc17 fault v on 2v/div 5v/div v out 1a/div i out 5v 0v 1ms/div ulvo response max1562 toc18 10ms/div v fault v in v out 2v/div 2v/div 2v/div r out = 1k 0v
detailed description the max1562/max1562h/max1563 family comprises a programmable current-limited switch designed for usb and hot-swap applications. the max1563 can be pro- grammed for loads up to 4a, and the max1562/ max1562h can be programmed for loads up to 3a. the current limit is programmed using a single resistor. a fault output notifies the host when the current-limit, short-cir- cuit, uvlo, or thermal-shutdown threshold is exceeded. a built-in current limit protects the load and the source in the event of an overload condition. in addition, a built-in short-circuit detection circuit pulses the output if the output is less than 1v (typ), resulting in a lower rms output current and reduced power dissipation in the device. thermal shutdown protects the device in the event of a prolonged overload or short-circuit condition. an internal micropower charge pump generates the high-side supply needed for driving the gate of the internal low-r on nmos switch. fault blanking allows the max1562/max1562h/ max1563 family to handle usb loads that may not be fully compliant with usb specifications. usb loads with additional bypass capacitance or large startup currents can be successfully powered while protecting the upstream power source. if the switch brings up the load within the blanking period (20ms typ), fault is not asserted. in the event of a current-limit event, cur- rent through the switch is regulated at the current-limit target. below approximately 1v, the short-circuit current limit is 30% higher than the programmed current limit. current-limit programming the max1562/max1562h/max1563 continuous current limit is set by selecting the value of r iset based on the max1562/max1562h/max1563 programmable 4a usb current-limited switches with autoreset and fault blanking _______________________________________________________________________________________ 7 pin description pin max1562 max1562h so max1563 (tqfn-ep) name function 1 4 on ( on ) switch on/off control input. the active polarity of on is low for the max1562 and high for the max1562h. for the max1563, the active polarity of on is set by sel. 25 fault fault indicator output. fault is an open-drain output that asserts low when the switch enters a sustained (>20ms) current limit. fault goes low immediately during thermal shutdown or an undervoltage input. note that during severe short conditions, fault goes low immediately since there is typically also a brief undervoltage transient. 3 6 gnd ground 4 7 iset current-limit input. connect an external resistor from iset to gnd to set current limit, where i lim = 17120 / r iset . 5, 7 9, 12 in power input for switch. connect both in inputs together and bypass with a 1? ceramic capacitor to gnd. load conditions might require additional bulk capacitance to prevent fluctuation on the input source. 6, 8 1, 10 out power output for switch. bypass out to gnd with a 4.7? ceramic capacitor. load conditions might require additional bulk capacitance. when disabled, out goes into a high-impedance state. 2, 8, 11 n.c. no connection. internally unconnected. leave unconnected or use with other traces to simplify pc board layout. 3 sel polarity control input for on. drive sel high for active-high enable. drive sel low for active-low enable. ep exposed pad. internally connected to gnd. connect to a large ground plane with multiple vias to manage thermal performance. not intended as an electrical connection point.
max1562/max1562h/max1563 following equation: i lim = 17120 / r iset choose r iset with resistor values between 4.22k to 16k . resistor values greater than 16k significantly degrade current-limit accuracy. for the max1562/ max1562h, the minimum r iset value is 5.76k . this corresponds to a 3a current limit, which is limited by the 8-pin so? maximum power dissipation. for the max1563, the minimum r iset value is 4.22k , corre- sponding to a 4a current limit. set the continuous cur- rent-limit value 20% to 30% higher than the expected load current to ensure that normal conditions do not trigger nuisance fault outputs. the short-circuit current limit is internally set to 1.3 times the continuous current- limit setting. on/off control and uvlo the max1562 has an active-low on polarity and the max1562h has an active-high on polarity. sel sets the active polarity of the max1563. connect on to the same voltage as sel to enable out. connect on to the opposite voltage as sel to disable out (see table 1). the max1562/max1562h/max1563 include a uvlo circuit to prevent erroneous switch operation when the input voltage goes low during startup and brownout conditions. input voltages of less than +3.4v inhibit operation of the device. fault asserts low during a uvlo condition. output fault protection and autoreset the max1562/max1562h/max1563 sense the switch output voltage and select continuous current limiting for v out greater than 1v or short-circuit current limiting for v out less than 1v. when v out is greater than 1v, the device operates in a continuous current-limit mode that limits output current to the programmed current limit (1a to 4a). when v out is less than 1v, the device oper- ates in short-circuit current-limit mode, sourcing a pulsed current to the load. the pulse current depends on the programmed current-limit value, typically 30% higher than the programmed current limit. when either fault condition persists for 20ms, the output turns off and the fault flag asserts. the output automati- cally restarts when the short or overload is removed. note that during severe short conditions, fault does not wait 20ms but goes low immediately since there is typically also an undervoltage transient during a severe short. the max1562/max1562h/max1563 detect short-circuit removal by sourcing 25ma from the output and monitor- ing the output voltage. when the voltage at the output exceeds +0.5v for 20ms, the fault flag resets, the output turns back on, and the 25ma current source turns off. thermal shutdown when the max1562/max1562h/max1563 die tempera- ture exceeds +160?, the switch turns off and fault goes low. thermal shutdown does not utilize the 20ms fault-blanking timeout period. when the junction tem- perature cools by 15?, the switch turns on again and fault returns high. the switch cycles on and off if an overload condition persists, resulting in a pulsed output that reduces the average system load. fault indicators the max1562/max1562h/max1563 provide an open- drain fault output, fault . connect fault to in through a 100k pullup resistor for most applications. fault asserts low when any of the following conditions occur: the input voltage is below the uvlo threshold. the switch junction temperature exceeds the +160? thermal-shutdown temperature limit. the switch is in current-limit or short-circuit current- limit mode for more than 20ms. the fault output deasserts after a 20ms delay once the fault condition is removed. ensure that the max1562/ max1562h/max1563 input bypass capacitance is suffi- ciently large to prevent load glitches from triggering the fault output. limit the input-voltage slew rate to 0.2v/? to prevent erroneous fault indications. to differentiate large capacitive loads from short circuits or sustained overloads, the switches have a fault-blank- ing circuit. when a load transient causes the device to enter current limit, an internal counter monitors the dura- tion of the fault. for load faults exceeding the 20ms fault-blanking time, the switch turns off, fault asserts low, and the device enters autoreset mode (see the output fault protection and autoreset section). only current-limit and short-circuit faults are blanked. if ther- mal-overload faults or the input voltage drops below the uvlo threshold, the switch turns off and asserts fault low immediately. note that during severe short condi- tions, fault goes low immediately since there is typi- cally also a brief undervoltage transient. fault blanking allows the max1562/max1562h/ max1563 to handle usb loads that might not be fully compliant with the usb specifications. these switches programmable 4a usb current-limited switches with autoreset and fault blanking 8 _______________________________________________________________________________________ table 1. on/off control sel on out behavior gnd on gnd v in off gnd off v in v in on
successfully power usb loads with additional bypass capacitance and/or large startup currents while pro- tecting the upstream power source. no fault is reported if the switch brings up the load within the 20ms blank- ing period. see table 2 for a summary of current-limit and fault behavior. applications information input power supply and capacitance connect both in inputs together externally. in powers the internal control circuitry and charge pump for the switch, allowing a decreased r on . bypass in to gnd with a 1? ceramic capacitor. when driving inductive loads or operating from inductive sources, which may occur when the device is powered by long leads or pc traces, larger input bypass capacitance is required to prevent voltage spikes from exceeding the absolute maximum ratings during short-circuit events. output capacitor bypass out to gnd with a 4.7? ceramic capacitor for local decoupling. additional bulk capacitance (up to 470?) reduces output-voltage transients under dynam- ic load conditions. using output capacitors greater than 470? might assert fault if the current limit cannot charge the output capacitor within the 20ms fault- blanking period. in addition to bulk capacitance, small- value (0.1? or greater) ceramic capacitors improve the output? resilience to electrostatic discharge (esd). driving inductive loads a wide variety of devices (mice, keyboards, cameras, and printers) typically connect to the usb port with cables, which might add an inductive component to the load. this inductance causes the output voltage at the usb port to oscillate during a load step. the max1562/max1562h/max1563 drive inductive loads, but avoid exceeding the device? absolute maximum ratings. the load inductance is usually relatively small, and the max1562/max1562h/max1563s?input includes a substantial bulk capacitance from an upstream regulator, as well as local bypass capacitors, limiting overshoot. if severe ringing occurs because of large-load i nductance, clamp the max1562/max1562h/ max1563 outputs below +6v and above -0.3v. turn-on and turn-off behavior when turned on, the max1562/max1562h/max1563 out- put ramps up over 2.5ms to eliminate load transients on the upstream power source. when turned off, the output max1562/max1562h/max1563 programmable 4a usb current-limited switches with autoreset and fault blanking _______________________________________________________________________________________ 9 table 2. current limiting and fault behavior condition max1562/max1562h/max1563 behavior output short-circuit (v out < +1v) if a short is detected at the output, the channel turns off, and the blanking timer begins. fault remains high during the blanking timeout period. if the short persists during the fault-blanking period, the output pulses at 0.30 x i lim rms. if the short is removed before the 20ms short-circuit blanking timeout period, the next ramped current pulse soft- starts the output. fault remains high. if the short-circuit persists after the fault-blanking period. fault goes low, autoreset mode begins, and the output sources 25ma. if the output voltage rises above 0.5v for 20ms, the channel resets, the output turns on, and fault goes high. output overload current (v out > +1v) if an overload occurs, output current regulates at i lim and the blanking timer turns on. fault remains high during the blanking timeout period. continuous current at i lim persists until either the 20ms blanking period expires or a thermal fault occurs. if overcurrent persists after 20ms, fault goes low, autoreset mode is enabled, and the output sources 25ma. if the output voltage rises above 0.5v for 20ms, the channel resets, the output turns on, and fault goes high (see the overload response into 1.4 ? graph in the typical operating characteristics section). thermal fault (t j > +160?) a junction temperature of +160 o c immediately asserts fault low (the blanking timeout period does not apply for thermal faults) and turns off the switch. when the junction cools by 15?, the thermal fault is cleared and fault goes high. note that if other fault conditions are present when a thermal fault clears, those fault states take effect.
max1562/max1562h/max1563 of the switches turns off rapidly to provide maximum safe- ty for the upstream power source and downstream devices. internal blocks shut down to minimize supply current when the switch is off. layout and thermal dissipation keep all traces as short as possible to reduce the effect of undesirable parasitic inductance and optimize the switch response time to output short-circuit conditions. place the input and output capacitors no more than 5mm from the device leads. connect in and out to the power bus with short traces. wide power bus planes at in and out provide superior heat dissipation. calculate the power dissipation for a normal loaded condition as follows: p = (i out ) 2 x r on at a 3a operating current and the maximum on-resis- tance of the switch (50m ), the power dissipation is: p = (3a) 2 x 0.05 = 450mw the worst-case power dissipation occurs when the out- put current is just below the current-limit threshold (set to 3a in this example) with an output voltage greater than +1v. in this case, the power dissipated in the switch is the voltage drop across the switch multiplied by the current limit: p = i lim x (v in - v out ) for a +5v input and +1v output, the maximum power dissipation is: p = 3a x (5v - 1v) = 12w because the package power dissipation is 471mw for the max1562/max1562h and 1.35w for the max1563, the devices?die temperature exceeds the +160? ther- mal-shutdown threshold, and the switch output shuts down until the junction temperature cools by 15?. the duty cycle and period are strong functions of the ambi- ent temperature and the pc board layout. if the output current exceeds the current-limit threshold, or the output voltage is pulled below the short-circuit detect threshold, the max1562/max1562h/max1563 enter a fault state for 20ms, after which autoreset mode is enabled and 25ma is sourced by the output. for a +5v input, out short-circuited to gnd, and autoreset mode active, the power dissipation is as follows: p = 0.025a x 5v = 0.125w chip information transistor count: 1833 process: bicmos programmable 4a usb current-limited switches with autoreset and fault blanking 10 ______________________________________________________________________________________ max1563 fault out out iset sel on in in usb port gnd input +4v to +5.5v off on 1 f 4.7 f* 100k *usb applications may require additional bulk capacitance. typical application circuit charge pump thermal shutdown fault logic 20ms timers ilim 25ma ulvo osc 25khz ref bias on sel in max1563 out gnd fault in max1563 functional diagram top view () for max1562h. out in iset 1 2 8 7 out in fault gnd on (on) so 3 4 6 5 max1562 max1562h in n.c. out in n.c. iset on fault gnd out n.c. sel 12 11 10 456 1 + + 2 3 9 8 7 max1563 thin qfn 4 mm x 4 mm pin configurations
max1562/max1562h/max1563 programmable 4a usb current-limited switches with autoreset and fault blanking ______________________________________________________________________________________ 11 soicn .eps package outline, .150" soic 1 1 21-0041 b rev. document control no. approval proprietary information title: top view front view max 0.010 0.069 0.019 0.157 0.010 inches 0.150 0.007 e c dim 0.014 0.004 b a1 min 0.053 a 0.19 3.80 4.00 0.25 millimeters 0.10 0.35 1.35 min 0.49 0.25 max 1.75 0.050 0.016 l 0.40 1.27 0.394 0.386 d d min dim d inches max 9.80 10.00 millimeters min max 16 ac 0.337 0.344 ab 8.75 8.55 14 0.189 0.197 aa 5.00 4.80 8 n ms012 n side view h 0.244 0.228 5.80 6.20 e 0.050 bsc 1.27 bsc c h e e b a1 a d 0 -8 l 1 variations: package information for the latest package outline information and land patterns, go to www.maxim-ic.com/packages . package type package code document no. 8 so s8-2 21-0041 12 tqfn-ep t1244-4 21-0139
24l qfn thin.eps package information (continued) for the latest package outline information and land patterns, go to www.maxim-ic.com/packages . max1562/max1562h/max1563 programmable 4a usb current-limited switches with autoreset and fault blanking 12 ______________________________________________________________________________________
max1562/max1562h/max1563 programmable 4a usb current-limited switches with autoreset and fault blanking ______________________________________________________________________________________ 13 package information (continued) for the latest package outline information and land patterns, go to www.maxim-ic.com/packages .
max1562/max1562h/max1563 programmable 4a usb current-limited switches with autoreset and fault blanking maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circu it patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. 14 ____________________maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 2009 maxim integrated products maxim is a registered trademark of maxim integrated products, inc. revision history revision number revision date description pages changed 0 7/03 initial release 1 7/09 changed package reference, package drawing, added lead-free designation, corrected pin description 1, 2, 10, 11

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