1 of 5 1.0 features all-in-one non-dimmable low-cost off-line led driver supports buck topology for high effciency (> 90%) supports universal input voltage range (90v ac C 277v ac ) and output power up to 45w high power factor (pf) with low current-ripple control technology user-confgurable power factor setting (> 0.7 to > 0.95) able to achieve low thd (< 20%) user-confgurable internal or external over-temperature protection (otp) with temperature-current derating tight led current regulation ( 5%) across line and load, and within power inductance tolerance ( 20%) stabilized led current-ripple control without visible shimmer or ficker active start-up scheme enables fastest possible start-up 72khz nominal pwm switching frequency with quasi- resonant operation ez-emi ? design enhances manufacturability built-in single-point fault protection features: led open-/ short-circuit protection and over-current protection no audible noise over entire operating range 2.0 description the IW3625 is a high performance, single- stage ac/dc power controller for led luminaires with power factor (pf) correction. the device uses digital control technology to build unique control in pwm buck power supplies to achieve high power factor while minimizing the led current ripple. this distinctive control approach enables the capability for users to make trade-offs between the pf and led current ripple in a single-stage design. it can achieve excellent led current regulation over line and load variation, without the need for secondary feedback circuit. the built-in temperature sensor along with control logic can automatically adjust output current in real- time without visible ficker during the process. alternatively, the external ntc thermistor is placed close to the hot spots in a design to provide thermal protection in the similar pattern by derating led current. the IW3625 operates in quasi-resonant mode to provide high effciency along with a number of key built-in protection features while minimizing the external component count, simplifying emi design, and lowering the total bill of material cost. it also eliminates the need for loop compensation components while maintaining stability over all operating conditions. dialogs innovative proprietary technology maximizes the IW3625 performance in a tiny sot-23 package. the IW3625 offers two multi-function pins allowing users to confgure pf and led current derating as required with no cost or size impact, thereby providing design fexibility. in addition to providing the temperature sensing via an ntc resistor, the multi pin also enables active start-up scheme to achieve the shortest possible start-up time without sacrifcing active effciency. 3.0 applications solid-state led lighting led lighting ballast IW3625 product summary off-line digital power controller for led driver with high power factor and low-ripple current rev. 0.4 preliminary IW3625 ? 2014 dialog semiconductor (uk) ltd. product summary
2 of 5 figure 3.1: IW3625 typical application circuit (non-isolated floating buck application) v out + l IW3625 output cs/pf gnd v cc multi fb/otp 6 3 5 1 2 4 n + v out + ntc l IW3625 1 4 5 6 2 3 n v out- + v out+ v cc multi gnd output fb/otp cs/pf figure 3.2: IW3625 typical application circuit (non-isolated non-floating buck application) IW3625 product summary off-line digital power controller for led driver with high power factor and low-ripple current rev. 0.4 preliminary IW3625 ? 2014 dialog semiconductor (uk) ltd. product summary
3 of 5 parameter symbol value units dc supply voltage range (pin 1, i cc = 20ma max) v cc -0.3 to 18.0 v continuous dc supply current at v cc pin (v cc = 15v) i cc 20 ma multi (pin 3) -0.3 to 18.0 v output (pin 6) -0.3 to 18.0 v fb/otp input (pin 2, i fb/otp 10ma) -0.7 to 4.0 v cs/pf input (pin 4) -0.3 to 4.0 v maximum junction temperature t jmax 150 c operating junction temperature t jopt -40 to 150 c storage temperature t stg -65 to 150 c thermal resistance junction-to-ambient ja 190 c/w esd rating per jedec jesd22-a114 2,000 v latch-up test per jesd78a 100 ma absolute maximum ratings are the parameter values or ranges which can cause permanent damage if exceeded. 4.0 pinout description 5.0 absolute maximum ratings pin # name type pin description 1 v cc power input power supply for control logic and mosfet drive. 2 fb/otp analog input multi-function pin. used for internal or external otp current derating confguration at the beginning of start-up and to provide output voltage sense for regulation during normal operation. 3 multi output multi-function pin. used to control active start-up device and for external temperature sensing via an ntc resistor. 4 cs/pf analog input multi-function pin. used for pf confguration at the beginning of start-up and to provide power switch current sense for cycle-by-cycle peak current control and limit during normal operation. 5 gnd ground ground. 6 output output gate drive for external mosfet switch. IW3625 v cc fb/otp multi output gnd cs/pf 1 2 3 6 4 5 figure 4.1: 6-lead sot-23 package IW3625 product summary off-line digital power controller for led driver with high power factor and low-ripple current rev. 0.4 preliminary IW3625 ? 2014 dialog semiconductor (uk) ltd. product summary
4 of 5 6.0 physical dimensions 7.0 ordering information 1 3 4 6 5 2 6-lead sot package d compliant to jedec standard mo-178ab controlling dimensions are in millimeters this package is rohs compliant and halide free. soldering temperature resistance: [a] package is ipc/jedec std 020d moisture sensitivity level 1 [b] package exceeds jedec std no. 22-a111 for solder immersion resistance; packages can withstand 10 s immersion < 260oc dimension d does not include mold flash, protrusions or gate burrs. mold flash, protrusions or gate burrs shall not exceed 0.25 mm per side. the package top may be smaller than the package bottom. dimensions d and e1 are are determined at the outermost extremes of the plastic body exclusive of mold flash, tie bar burrs and interlead flash, but including any mismatch between top and bottom of the plastic body. seating plane a1 coplanarity 0.10 e1 b e e1 a a2 c l symbol millimeters a1 min max 0.00 0.15 a - 1.45 b 0.30 0.50 c 0.08 0.22 d 2.80 3.00 e e1 e 0.95 bsc e1 1.90 bsc 2.80 bsc 1.60 bsc l 0.30 0.60 0 8 a2 0.90 1.30 e 2.90 bsc 1 3 4 6 5 2 xyzn sot23-6 devices are marked with a 4-digit code. orientation of pin 1 is shown below: part number options package description hudohudnvuhth tape & reel 1 l: 1&23ghdwljnlwljhth 62 tape & reel 1 1rwhdsh5hhsdnljtdwlwlhhllrghljtdwlwl IW3625 product summary off-line digital power controller for led driver with high power factor and low-ripple current rev. 0.4 preliminary IW3625 ? 2014 dialog semiconductor (uk) ltd. product summary
disclaimer information in this document is believed to be accurate and reliable. however, dialog semiconductor does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information. dialog semiconductor furthermore takes no responsibility whatsoever for the content in this document if provided by any information source outside of dialog semiconductor . dialog semiconductor reserves the right to change without notice the information published in this document, including without limitation the specifcation and the design of the related semiconductor products, software and applications. applications, software, and semiconductor products described in this document are for illustrative purposes only. dialog semiconductor makes no representation or warranty that such applications, software and semiconductor products will be suitable for the specifed use without further testing or modifcation. unless otherwise agreed in writing, such testing or modifcation is the sole responsibility of the customer and dialog semiconductor excludes all liability in this respect. customer notes that nothing in this document may be construed as a license for customer to use the dialog semiconductor products, software and applications referred to in this document. such license must be separately sought by customer with dialog semiconductor . all use of dialog semiconductor products, software and applications referred to in this document are subject to dialog semiconductors standard terms and conditions of sale , unless otherwise stated. ? dialog semiconductor (uk) ltd. all rights reserved. rohs compliance dialog semiconductor complies to european directive 2001/95/ec and from 2 january 2013 onwards to european directive 2011/65/eu concerning restriction of hazardous substances (rohs/rohs2). dialog semiconductors statement on rohs can be found on the customer portal https://support.diasemi.com/ . rohs certifcates from our suppliers are available on request. 5 of 5 contacting dialog semiconductor united kingdom dialog semiconductor (uk) ltd phone: +44 1793 757700 germany dialog semiconductor gmbh phone: +49 7021 805-0 the netherlands dialog semiconductor b.v. phone: +31 73 640 88 22 email info_pcbg@diasemi.com north america dialog semiconductor inc. phone: +1 408 845 8500 japan dialog semiconductor k. k. phone: +81 3 5425 4567 taiwan dialog semiconductor taiwan phone: +886 8178 6222 web site: www.dialog-semiconductor.com singapore dialog semiconductor singapore phone: +65 64849929 hong kong dialog semiconductor hong kong phone: +852 2607 4271 korea dialog semiconductor korea phone: +82 2 3469 8200 china dialog semiconductor (shenzhen) phone: +86 755 2981 3669 dialog semiconductor (shanghai) phone: +86 21 5178 2561 IW3625 product summary off-line digital power controller for led driver with high power factor and low-ripple current rev. 0.4 preliminary IW3625 ? 2014 dialog semiconductor (uk) ltd. product summary
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