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slvs052f ? april 1988 ? revised november 2003 1 post office box 655303 ? dallas, texas 75265 complete pwm power-control circuitry uncommitted outputs for 200-ma sink or source current output control selects single-ended or push-pull operation internal circuitry prohibits double pulse at either output variable dead time provides control over total range internal regulator provides a stable 5-v reference supply trimmed to 1% circuit architecture allows easy synchronization undervoltage lockout for low-v cc conditions description/ordering information the tl594 incorporates all the functions required in the construction of a pulse-width-modulation (pwm) control circuit on a single chip. designed primarily for power-supply control, this device offers the systems engineer the flexibility to tailor the power-supply control circuitry to a specific application. the tl594 contains two error amplifiers, an on-chip adjustable oscillator, a dead-time control (dtc) comparator, a pulse-steering control flip-flop, a 5-v regulator with a precision of 1%, an undervoltage lockout control circuit, and output control circuitry. the error amplifiers have a common-mode voltage range of ?0.3 v to v cc ? 2 v. the dtc comparator has a fixed offset that provides approximately 5% dead time. the on-chip oscillator can be bypassed by terminating rt to the reference output and providing a sawtooth input to ct, or it can be used to drive the common circuitry in synchronous multiple-rail power supplies. the uncommitted output transistors provide either common-emitter or emitter-follower output capability. each device provides for push-pull or single-ended output operation, with selection by means of the output-control function. the architecture of these devices prohibits the possibility of either output being pulsed twice during push-pull operation. the undervoltage lockout control circuit locks the outputs off until the internal circuitry is operational. the tl594c is characterized for operation from 0 c to 70 c. the tl594i is characterized for operation from ?40 c to 85 c. copyright ? 2003, texas instruments incorporated please be aware that an important notice concerning avail ability, standard warranty, and use in critical applications of texas instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 1in+ 1in? feedback dtc ct rt gnd c1 2in+ 2in? ref output ctrl v cc c2 e2 e1 d, n, ns, or pw package (top view)
slvs052f ? april 1988 ? revised november 2003 2 post office box 655303 ? dallas, texas 75265 description/ordering information (continued) ordering information t a package ? orderable part number top-side marking pdip (n) tube of 25 tl594cn tl594cn soic (d) tube of 40 tl594cd tl594c 0 c to 70 c soic (d) reel of 2500 tl594cdr tl594c 0 c to 70 c sop (ns) reel of 2000 tl594cnsr tl594 tssop (pw) tube of 90 TL594CPW t594 tssop (pw) reel of 2000 TL594CPWr t594 pdip (n) tube of 25 tl594in tl594in soic (d) tube of 40 tl594id tl594i ?40 c to 85 c soic (d) reel of 2500 tl594idr tl594i ?40 c to 85 c sop (ns) reel of 2000 tl594insr tl594i tssop (pw) tube of 90 tl594ipw z594 tssop (pw) reel of 2000 tl594ipwr z594 ? package drawings, standard packing quantities, thermal data, symbolization, and pcb design guidelines are available at www.ti.com/sc/package. function table input output ctrl output function v i = 0 single-ended or parallel output v i = v ref normal push-pull operation
slvs052f ? april 1988 ? revised november 2003 3 post office box 655303 ? dallas, texas 75265 functional block diagram gnd ref v cc reference regulator c1 pulse-steering flip-flop c1 1d feedback dtc ct rt pwm comparator error amplifier 2 1 + ? error amplifier 1 0.1 v dtc comparator oscillator output ctrl (see function table) 0.7 ma e1 c2 e2 2 + ? undervoltage lockout control in+ in? in+ in? 6 5 1 2 16 15 3 14 7 12 10 11 9 8 13 4 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) ? supply voltage, v cc (see note 1) 41 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . amplifier input voltage v cc + 0.3 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . collector output voltage 41 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . collector output current 250 ma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . package thermal impedance, ja (see notes 2 and 3): d package 73 c/w . . . . . . . . . . . . . . . . . . . . . . . . . . . . n package 67 c/w . . . . . . . . . . . . . . . . . . . . . . . . . . . . ns package 64 c/w . . . . . . . . . . . . . . . . . . . . . . . . . . . pw package 108 c/w . . . . . . . . . . . . . . . . . . . . . . . . . operating virtual junction temperature, t j 150 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . storage temperature range, t stg ?65 c to 150 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ? stresses beyond those listed under ?absolute maximum ratings? may cause permanent damage to the device. these are stress ratings only, a nd functional operation of the device at these or any other conditions beyond those indicated under ?recommended operating conditi ons? is not implied. exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. notes: 1. all voltage values, except differential voltages, are with respect to the network ground terminal. 2. maximum power dissipation is a function of t j (max), ja , and t a . the maximum allowable power dissipation at any allowable ambient temperature is p d = (t j (max) ? t a )/ ja . operating at the absolute maximum t j of 150 c can affect reliability. 3. the package thermal impedance is calculated in accordance with jesd 51-7.
slvs052f ? april 1988 ? revised november 2003 4 post office box 655303 ? dallas, texas 75265 recommended operating conditions min max unit v cc supply voltage 7 40 v v i amplifier input voltage ?0.3 v cc ?2 v v o collector output voltage 40 v collector output current (each transistor) 200 ma current into feedback terminal 0.3 ma c t timing capacitor 0.47 10000 nf r t timing resistor 1.8 500 k ? f osc oscillator frequency 1 300 khz t a operating free-air temperature tl594c 0 70 c t a operating free-air temperature tl594i ?40 85 c
slvs052f ? april 1988 ? revised november 2003 5 post office box 655303 ? dallas, texas 75265 electrical characteristics over recommended operating conditions, v cc = 15 v, (unless otherwise noted) reference section parameter test conditions ? tl594c, tl594i unit parameter test conditions ? min typ ? max unit output voltage (ref) i o = 1 ma, t a = 25 c 4.95 5 5.05 v input regulation v cc = 7 v to 40 v, t a = 25 c 2 25 mv output regulation i o = 1 to 10 ma, t a = 25 c 14 35 mv output-voltage change with temperature ? t a = min to max 2 10 mv/v short-circuit output current v ref = 0 10 35 50 ma ? for conditions shown as min or max, use the appropriate value specified under recommended operating conditions. ? all typical values, except for parameter changes with temperature, are at t a = 25 c. duration of the short circuit should not exceed one second. amplifier section (see figure 1) parameter test conditions tl594c, tl594i unit parameter test conditions min typ ? max unit input offset voltage, error amplifier feedback = 2.5 v 2 10 mv input offset current feedback = 2.5 v 25 250 na input bias current feedback = 2.5 v 0.2 1 a common-mode input voltage range, error amplifier v cc = 7 v to 40 v 0.3 to v cc ?2 v open-loop voltage amplification, error amplifier ? v o = 3 v, r l = 2 k ? , v o = 0.5 v to 3.5 v 70 95 db unity-gain bandwidth v o = 0.5 v to 3.5 v, r l = 2 k ? 800 khz common-mode rejection ratio, error amplifier v cc = 40 v, t a = 25 c 65 80 db output sink current, feedback v id = ?15 mv to ?5 v, feedback = 0.5 v 0.3 0.7 ma output source current, feedback v id = 15 mv to 5 v, feedback = 3.5 v ?2 ma ? all typical values, except for parameter changes with temperature, are at t a = 25 c. oscillator section, c t = 0.01 f, r t = 12 k ? (see figure 2) parameter test conditions ? tl594c, tl594i unit parameter test conditions ? min typ ? max unit frequency 10 khz standard deviation of frequency ? all values of v cc , c t , r t , and t a constant 100 hz/khz frequency change with voltage v cc = 7 v to 40 v, t a = 25 c 1 hz/khz frequency change with temperature # ? t a = min to max 50 hz/khz ? for conditions shown as min or max, use the appropriate value specified under recommended operating conditions. ? all typical values, except for parameter changes with temperature, are at t a = 25 c. ? standard deviation is a measure of the statistical distribution about the mean, as derived from the formula: n n 1 (x n x ) 2 n 1 # temperature coefficient of timing capacitor and timing resistor is not taken into account.
slvs052f ? april 1988 ? revised november 2003 6 post office box 655303 ? dallas, texas 75265 electrical characteristics over recommended operating free-air temperature range, v cc = 15 v, (unless otherwise noted) (continued) dead-time control section (see figure 2) parameter test conditions tl594c, tl594i unit parameter test conditions min typ ? max unit input bias current v i = 0 to 5.25 v ?2 ?10 a maximum duty cycle, each output dtc = 0 v 0.45 input threshold voltage zero duty cycle 3 3.3 v input threshold voltage maximum duty cycle 0 v ? all typical values, except for parameter changes with temperature, are at t a = 25 c. output section parameter test conditions tl594c, tl594i unit parameter test conditions min typ ? max unit v c = 40 v, v e = 0 v, v cc = 40 v 2 100 collector off-state current dtc and output ctrl = 0 v, v c = 15 v, v e = 0 v, v cc = 1 to 3 v 4 200 a emitter off-state current v cc = v c = 40 v, v e = 0 ?100 a collector-emitter saturation voltage common emitter v e = 0, i c = 200 ma 1.1 1.3 v collector-emitter saturation voltage emitter follower v c = 15 v, i e = ?200 ma 1.5 2.5 v output control input current v i = v ref 3.5 ma ? all typical values, except for parameter changes with temperature, are at t a = 25 c. pwm comparator section (see figure 2) parameter test conditions tl594c, tl594i unit parameter test conditions min typ ? max unit input threshold voltage, feedback zero duty cycle 4 4.5 v input sink current, feedback feedback = 0.5 v 0.3 0.7 ma ? all typical values, except for parameter changes with temperature, are at t a = 25 c. undervoltage lockout section (see figure 2) parameter test conditions ? tl594c, tl594i unit parameter test conditions ? min max unit threshold voltage t a = 25 c 6 v threshold voltage ? t a = min to max 3.5 6.9 v hysteresis 100 mv ? for conditions shown as min or max, use the appropriate value specified under recommended operating conditions. hysteresis is the difference between the positive-going input threshold voltage and the negative-going input threshold voltage. parameter test conditions tl594c, tl594i unit parameter test conditions min typ ? max unit standby supply current rt at v ref , v cc = 15 v 9 15 ma standby supply current rt at v ref , all other inputs and outputs open v cc = 40 v 11 18 ma average supply current dtc = 2 v, see figure 2 12.4 ma ? all typical values, except for parameter changes with temperature, are at t a = 25 c.
slvs052f ? april 1988 ? revised november 2003 7 post office box 655303 ? dallas, texas 75265 electrical characteristics over recommended operating free-air temperature range, v cc = 15 v, (unless otherwise noted) (continued) switching characteristics, t a = 25 c parameter test conditions tl594c, tl594i unit parameter test conditions min typ ? max unit output-voltage rise time common-emitter configuration (see figure 3) 100 200 ns output-voltage fall time common-emitter configuration (see figure 3) 30 100 ns output-voltage rise time emitter-follower configuration (see figure 4) 200 400 ns output-voltage fall time emitter-follower configuration (see figure 4) 45 100 ns ? all typical values, except for parameter changes with temperature, are at t a = 25 c. parameter measurement information + ? + ? v i v ref feedback amplifier under test other amplifier figure 1. amplifier-characteristics test circuit
slvs052f ? april 1988 ? revised november 2003 8 post office box 655303 ? dallas, texas 75265 parameter measurement information test inputs dtc feedback rt ct gnd 50 k ? 12 k ? 0.01 f v cc ref output ctrl e2 c2 e1 c1 output 1 output 2 150 ? 2 w 150 ? 2 w v cc = 15 v test circuit in+ in? in+ in? v cc v cc 0 v 0 v voltage at c1 voltage at c2 voltage at ct dtc input feedback input 0 v 0.7 v 0% max 0% threshold voltage threshold voltage voltage waveforms duty cycle tl594 12 4 3 6 5 1 2 16 15 13 7 14 10 11 9 8 error amplifiers figure 2. operational test circuit and waveforms
slvs052f ? april 1988 ? revised november 2003 9 post office box 655303 ? dallas, texas 75265 parameter measurement information output each output circuit 68 ? 2 w 15 v c l = 15 pf (includes probe and jig capacitance) 90% 10% 90% 10% t f t r test circuit output-voltage waveform figure 3. common-emitter configuration output each output circuit 68 ? 2 w 15 v c l = 15 pf (includes probe and jig capacitance) 90% 10% 90% 10% t f t r test circuit output-voltage waveform figure 4. emitter-follower configuration
slvs052f ? april 1988 ? revised november 2003 10 post office box 655303 ? dallas, texas 75265 typical characteristics df = 1% ? 40 10 100 1 k 4 k 10 k 40 k 100 k 400 k 1 m oscillator frequency ? hz oscillator frequency and frequency variation vs timing resistance 400 1 k 4 k 10 k 40 k 100 k ?2% ?1% 0% c t = 1 f 0.01 f 0.001 f ? r t ? timing resistance ? ? 0.1 f v cc = 15 v t a = 25 c ? frequency variation ( ? f) is the change in oscillator frequency that occurs over the full temperature range. figure 5 10 0 100 20 1 10 100 1 m voltage amplification ? db 30 f ? frequency ? hz amplifier voltage amplification vs frequency 1 k v cc = 15 v ? v o = 3 v t a = 25 c 10 k 40 50 60 70 80 90 100 k figure 6
packaging information orderable device status (1) package type package drawing pins package qty eco plan (2) lead/ball finish msl peak temp (3) tl594cd active soic d 16 40 pb-free (rohs) cu nipdau level-2-250c-1 year tl594cdr active soic d 16 2500 pb-free (rohs) cu nipdau level-2-250c-1 year tl594cn active pdip n 16 25 pb-free (rohs) cu nipdau level-nc-nc-nc tl594cnsr active so ns 16 2000 pb-free (rohs) cu nipdau level-2-260c-1 year/ level-1-235c-unlim TL594CPW active tssop pw 16 90 pb-free (rohs) cu nipdau level-1-250c-unlim TL594CPWr active tssop pw 16 2000 pb-free (rohs) cu nipdau level-1-250c-unlim tl594id active soic d 16 40 pb-free (rohs) cu nipdau level-2-250c-1 year tl594idr active soic d 16 2500 pb-free (rohs) cu nipdau level-2-250c-1 year tl594in active pdip n 16 25 pb-free (rohs) cu nipdau level-nc-nc-nc tl594insr active so ns 16 2000 pb-free (rohs) cu nipdau level-2-260c-1 year/ level-1-235c-unlim tl594ipw active tssop pw 16 90 pb-free (rohs) cu nipdau level-1-250c-unlim tl594ipwr active tssop pw 16 2000 pb-free (rohs) cu nipdau level-1-250c-unlim (1) the marketing status values are defined as follows: active: product device recommended for new designs. lifebuy: ti has announced that the device will be discontinued, and a lifetime-buy period is in effect. nrnd: not recommended for new designs. device is in production to support existing customers, but ti does not recommend using this part in a new design. preview: device has been announced but is not in production. samples may or may not be available. obsolete: ti has discontinued the production of the device. (2) eco plan - may not be currently available - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. none: not yet available lead (pb-free). pb-free (rohs): ti's terms "lead-free" or "pb-free" mean semiconductor products that are compatible with the current rohs requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. where designed to be soldered at high temperatures, ti pb-free products are suitable for use in specified lead-free processes. green (rohs & no sb/br): ti defines "green" to mean "pb-free" and in addition, uses package materials that do not contain halogens, including bromine (br) or antimony (sb) above 0.1% of total product weight. (3) msl, peak temp. -- the moisture sensitivity level rating according to the jedecindustry standard classifications, and peak solder temperature. important information and disclaimer: the information provided on this page represents ti's knowledge and belief as of the date that it is provided. ti bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. efforts are underway to better integrate information from third parties. ti has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. ti and ti suppliers consider certain information to be proprietary, and thus cas numbers and other limited information may not be available for release. in no event shall ti's liability arising out of such information exceed the total purchase price of the ti part(s) at issue in this document sold by ti to customer on an annual basis. package option addendum www.ti.com 4-mar-2005 addendum-page 1

mechanical data mtss001c january 1995 revised february 1999 post office box 655303 ? dallas, texas 75265 pw (r-pdso-g**) plastic small-outline package 14 pins shown 0,65 m 0,10 0,10 0,25 0,50 0,75 0,15 nom gage plane 28 9,80 9,60 24 7,90 7,70 20 16 6,60 6,40 4040064/f 01/97 0,30 6,60 6,20 8 0,19 4,30 4,50 7 0,15 14 a 1 1,20 max 14 5,10 4,90 8 3,10 2,90 a max a min dim pins ** 0,05 4,90 5,10 seating plane 0 8 notes: a. all linear dimensions are in millimeters. b. this drawing is subject to change without notice. c. body dimensions do not include mold flash or protrusion not to exceed 0,15. d. falls within jedec mo-153
important notice texas instruments incorporated and its subsidiaries (ti) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. all products are sold subject to ti?s terms and conditions of sale supplied at the time of order acknowledgment. ti warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with ti?s standard warranty. testing and other quality control techniques are used to the extent ti deems necessary to support this warranty. except where mandated by government requirements, testing of all parameters of each product is not necessarily performed. ti assumes no liability for applications assistance or customer product design. customers are responsible for their products and applications using ti components. to minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards. ti does not warrant or represent that any license, either express or implied, is granted under any ti patent right, copyright, mask work right, or other ti intellectual property right relating to any combination, machine, or process in which ti products or services are used. information published by ti regarding third-party products or services does not constitute a license from ti to use such products or services or a warranty or endorsement thereof. use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from ti under the patents or other intellectual property of ti. reproduction of information in ti data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. reproduction of this information with alteration is an unfair and deceptive business practice. ti is not responsible or liable for such altered documentation. resale of ti products or services with statements different from or beyond the parameters stated by ti for that product or service voids all express and any implied warranties for the associated ti product or service and is an unfair and deceptive business practice. ti is not responsible or liable for any such statements. following are urls where you can obtain information on other texas instruments products and application solutions: products applications amplifiers amplifier.ti.com audio www.ti.com/audio data converters dataconverter.ti.com automotive www.ti.com/automotive dsp dsp.ti.com broadband www.ti.com/broadband interface interface.ti.com digital control www.ti.com/digitalcontrol logic logic.ti.com military www.ti.com/military power mgmt power.ti.com optical networking www.ti.com/opticalnetwork microcontrollers microcontroller.ti.com security www.ti.com/security telephony www.ti.com/telephony video & imaging www.ti.com/video wireless www.ti.com/wireless mailing address: texas instruments post office box 655303 dallas, texas 75265 copyright ? 2005, texas instruments incorporated

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