1 of 7 1 description the IW3627 is a high-performance single-stage ac/dc constant voltage (cv) controller with high power factor correction. it supports most commonly used isolated and non-isolated topologies including fyback, buck-boost, and buck. the device operates in constant on-time mode to achieve high power factor (>0.9) across a wide load range. it can achieve excellent output voltage regulation over line and load variation without the need for a secondary feedback circuit. it also eliminates the need for external loop compensation while maintaining stability over all operating conditions with different types of loads, including downstream dc-dc converter, constant current (cc) load, led load, and constant resistive (cr) load. the IW3627 integrates a proprietary technique that adaptively adjusts output voltage limits to maintain overshoot and undershoot transients to less than 10% of the nominal output voltage for any load transient. the IW3627 operates in pulse-frequency-modulation (pfm) mode at light load to eliminate audible noise, and at the same time achieving less than 200mw no-load standby power consumption. dialogs innovative proprietary technology maximizes the IW3627 performance in a tiny sot-23 package. the IW3627 provides maximum design fexibility by providing two multi-function pins that allow users to confgure maximum and minimum switching frequencies with no cost or size impact. in addition to providing input voltage sensing for input under-voltage protection, the v in pin also enables the active start-up scheme to achieve the shortest possible start-up time without sacrifcing active effciency. 2 features all-in-one low-cost off-line high power factor (pf) constant voltage (cv) controller supports fyback, buck-boost, and buck topologies in isolated or non- isolated designs primary-side control achieves very tight line and load regulation (3%) enhanced mosfet driver supports output power up to 90w or above in a tiny sot-23 package user-confgurable minimum switching frequency (600hz/1khz) ensures no-load standby power consumption < 200mw or below internal loop compensation ensures stable operation with different types of loads: downstream dc-dc converter, constant current (cc) load, led load, and constant resistive (cr) load supports wide range of output capacitance (with output voltage ripple ranging from 1% to 20% at full load) 3 applications smart led lighting led lighting ballast front-end pre-regulator supports universal ac input (90v ac C 277v ac ) and dc input adaptively adjusted output voltage limits accommodating different load conditions ensures <10% overshoot and undershoot for any load transient user-confgurable maximum pwm switching frequency (90khz or 120khz) built-in soft-start achieves fast and smooth start-up for all different operating conditions active start-up scheme enables fastest possible start- up built-in single-point fault protection features: output over-load, output over-voltage, output short and input voltage under-voltage protections built-in over-temperature protection no audible noise over entire operating range IW3627 off-line digital constant-voltage led driver with power factor correction rev. 1.3 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 28-april-2017
2 of 7 figure 3.1 : IW3627 typical application circuit (isolated flyback application) figure 3.2 : IW3627 typical application circuit (buck application) gnd cs / f min v in v cc l n iw 3627 fb /f max output 2 1 6 5 4 3 v out + v out r in dfet l n gnd cs / f min v in v cc iw 3627 fb / f max output 2 1 6 5 4 3 v out + v out IW3627 off-line digital constant-voltage led driver with power factor correction rev. 1.3 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 28-april-2017
3 of 7 i 27 a 2 1 figure 3.3 : IW3627 typical application circuit (isolated flyback application without using active start-up device) l n gnd cs / f min v in v cc iw 3627 fb / f max output 2 1 6 5 4 3 v out 1 + v out 1 v out 2 + v out 2 mcu or wireless module figure 3.4 : IW3627 typical application circuit (smart lighting) IW3627 off-line digital constant-voltage led driver with power factor correction rev. 1.3 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 28-april-2017
4 of 7 4 pinout description figure 4.1 : 6-lead sot23 package pin number pin name type pin description 1 v cc power input power supply to control logic and mosfet drive. 2 fb/f max analog input multi-function pin. used to confgure maximum switching frequency (f max ), and to enable/disable over-load protection (olp) at the beginning of start-up. it also provides output voltage sense for primary regulation during normal operation. 3 v in analog input multi-function pin. used to control active start-up device and sense line voltage. 4 cs/f min analog input multi-function pin. used to confgure minimum switching frequency (f min ) at the beginning of the start-up. it also provides primary 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. IW3627 v cc fb/f max v in output gnd cs/f min 1 2 3 6 4 5 IW3627 off-line digital constant-voltage led driver with power factor correction rev. 1.3 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 28-april-2017
5 of 7 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 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 v in (pin 3) -0.3 to 18.0 v output (pin 6) -0.3 to 18.0 v fb/f max input (pin 2, i fb/otp 10ma) -0.7 to 4.0 v cs/f min 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 jesd78d 100 ma IW3627 off-line digital constant-voltage led driver with power factor correction rev. 1.3 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 28-april-2017
6 of 7 6 physical dimensions 7 ordering information part number description package description IW3627-00 v ipk(low) = 0.16v, maximum nv o up to 90v sot-23 tape & reel 1 IW3627-01 v ipk(low) = 0.2v, maximum nv o up to 145v sot-23 tape & reel 1 note 1: tape & reel packing quantity is 3,000/reel. minimum ordering quantity is 3,000. 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 IW3627 off-line digital constant-voltage led driver with power factor correction rev. 1.3 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 28-april-2017
7 of 7 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. IW3627 off-line digital constant-voltage led driver with power factor correction rev. 1.3 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 28-april-2017 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
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