1 of 6 1 description the IW3605 is a single-stage, high-performance ac/dc offine power supply controller for dimmable led luminaires. it applies advanced digital control technology to detect the dimmer type, which p rovides dynamic impedance to interface with the dimmer and control the led brightness at the same time . with advanced dimmer detection technology, the IW3605 can operate with most wall dimmers including leading- edge dimmers (r-type or r-l type) and trailing-edge dimmers (r-c type). in addition, the IW3605s cycle-by-cycle waveform analysis technology allows for fast dimmer setting response. when no dimmer is on the line, the IW3605 optimizes the power factor and minimizes the current harmonic distortion to the ac line. furthermore, in no dimmer condition, output current is regulated at nominal output current value over a wide input voltage range. the IW3605 operates the main power converter that delivers current to the led load in quasi-resonant mode to provide high power effciency and minimize electro-magnetic interference (emi). the commonly utilized converter topologies for IW3605 are buck-boost and fyback. it uses dialog s patented primaccurate tm primary-side sensing technology to achieve excellent led current regulation under dif ferent ac line and led load voltages, without using a secondary-side feedback circuit and thus eliminating the need for an optocoupler . the IW3605 minimizes the external components count by eliminating the secondary feedback circuit and bleeder circuit. additionally, the digital control loop of the IW3605 maintains stable over all operating conditions without the need for loop compensation components. 2 features isolated/non-isolated offine120v ac /230v ac led driver up to 25w output power wide line frequency range (from 45hz to 66hz) meets iec61000-3-2 current harmonic requirement total harmonic distortion < 20% with pf > 0.92 wide dimmer compatibility x leading-edge dimmer x trailing-edge dimmer no bleeder needed with output power down to 5w for 120v ac /230v ac resonant control to achieve high effciency (typical > 82% without dimmer) over-temperature led current foldback tight led current regulation ( 5%) 3 applications dimmable led retroft lamps up to 25w dimmable led luminaires up to 25w small solution size x single-stage topology reduces part counts x 90khz maximum switching frequency enables the use of a small transformer fast start-up (< 0.5s without dimmer) primary-side sensing eliminates the need for optocoupler feedback compatible with nema ssl6 dimming curve standard multiple protection features that include: x led open-circuit and short-circuit protection x over-current protection x over-temperature protection x current sensing resistor short-circuit protection x ac line over-voltage protection IW3605 ac/dc digital power controller for bleederless single-stage high power factor dimmable led drivers rev. 1.0 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 27-june-2017
2 of 6 figure 3.1 : IW3605 simplifed application circuit 1 2 3 8 4 6 7 5 snb gnd output nc v sense i sense v cc - + ac input output IW3605 v in IW3605 ac/dc digital power controller for bleederless single-stage high power factor dimmable led drivers rev. 1.0 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 27-june-2017
3 of 6 4 pinout description pin number pin name type pin description 1 snb output gate drive for active snubber switch 2 v in analog input rectifed ac line voltage sense 3 nc C no connection 4 v sense analog input auxiliary winding voltage sense 5 i sense analog input primary side current sense 6 output output gate drive for main mosfet switch 7 gnd ground ground 8 v cc power power supply for control logic figure 4.1 : 8-lead soic package IW3605 1 2 3 8 7 6 4 5 snb v in nc v sense v cc gnd output i sense IW3605 ac/dc digital power controller for bleederless single-stage high power factor dimmable led drivers rev. 1.0 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 27-june-2017
4 of 6 absolute maximum ratings are the parameter values or ranges which can cause permanent damage if exceeded. 5 absolute maximum ratings parameter symbol value units dc supply voltage range (pin 8) v cc -0.3 to 18 v output (pin 6) -0.3 to v cc v snb output (pin 1) -0.3 to v cc v v sense input (pin 4, i 10ma) -0.7 to 4.0 v v in input (pin 2) -0.3 to 18 v i sense input (pin 5) -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 [still air] ja 160 c/w esd rating per jedec jesd22-a114 2,000 v latch-up test 100 ma IW3605 ac/dc digital power controller for bleederless single-stage high power factor dimmable led drivers rev. 1.0 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 27-june-2017
5 of 6 6 physical dimensions 7 ordering information part no. options package description i w 3605 - 02 1 IW3605-02c i sense clamp to 0.3v nominal soic-8 tape & reel 2 IW3605-05 1 IW3605-05c i sense clamp to 0.5v nominal soic-8 tape & reel 2 note 1: not recommended for new designs; use the Cxxc version. note 2: tape and reel packing quantity is 2,500/reel. minimum ordering quantity is 2,500. compliant to jedec standard ms12f controlling dimensions are in inches; millimeter dimensions are for reference only this product 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; package can withstand 10 s immersion < 260?c dimension d does not include mold flash, protrusions or gate burrs. mold flash, protrusions or gate burrs shall not exceed 0.15 mm per end. dimension e1 does not include interlead flash or protrusion. interlead flash or protrusion shall not exceed 0.25 mm per side. the package top may be smaller than the package bottom. dimensions d and e1 are determined at the outermost extremes of the plastic body exclusive of mold flash, tie bar burrs, gate burrs and interlead flash, but including any mismatch between the top and bottom of the plastic body. 8-lead small outline (soic) package coplanarity 0.10 (0.004) 8 5 4 1 seating plane a1 e h b d e a a2 c l h x 45 inches symbol millimeters min 0.0040 a1 max min max 0.010 0.10 0.25 0.053 a 0.069 1.35 1.75 0.014 b 0.019 0.35 0.49 0.007 c 0.010 0.19 0.25 0.189 d 0.197 4.80 5.00 0.150 e 0.157 3.80 4.00 0.050 bsc e 1.27 bsc 0.228 h 0.244 5.80 6.20 0.10 h 0.020 0.25 0.50 0.016 l 0.049 0.4 1.25 0 8 0.049 a2 0.059 1.25 1.50 IW3605 ac/dc digital power controller for bleederless single-stage high power factor dimmable led drivers rev. 1.0 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 27-june-2017
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 , available on the company website ( www.dialog-semiconductor.com ) unless otherwise stated. dialog and the dialog logo are trademarks of dialog semiconductor plc or its subsidiaries. all other product or service names are the property of their respective owners. ? 2017 dialog semiconductor. all rights reserved. rohs compliance dialog semiconductors suppliers certify that its products are in compliance with the requirements of directive 2011/65/eu of the european parliament on the restriction of the use of certain hazardous substances in electrical and electronic equipment. rohs certifcates from our suppliers are available on request. 6 of 6 contacting dialog semiconductor united kingdom (headquarters) 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 8822 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: +886 281 786 222 web site: www.dialog-semiconductor.com singapore dialog semiconductor singapore phone: +65 64 8499 29 hong kong dialog semiconductor hong kong phone: +852 3769 5200 korea dialog semiconductor korea phone: +82 2 3469 8200 china (shenzhen) dialog semiconductor china phone: +86 755 2981 3669 china (shanghai) dialog semiconductor china phone: +86 21 5424 9058 IW3605 ac/dc digital power controller for bleederless single-stage high power factor dimmable led drivers rev. 1.0 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 27-june-2017
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