iW339 SSL Interface Controller for Analog (0-10V), PWM, and Resistor Dimming with Optocoupler Delay Elimination 1 Description The iW339 is a PWM signal generator that works with three different types of dimming inputs, 0-10V PWM dimming, 0-10V linear dimming or simple dimming using a single resistor to ground from the DIM pin. The iW339 converts either of these three signals into a 0%-100% PWM duty cycle that can then be used to provide a dimming signal to a primary-side LED driver such as the iW3636, removing the need for transformers or other driver circuitry. The output of the iW339-01 is optimized in such a way as to remove the impact of the non-linear delay typical of optocouplers. The output of the iW339-00 provides a standard PWM output. The output PWM frequency can be programmed from 100Hz to 50kHz through a single capacitor to ground. The input to the iW339 integrates the necessary current source to interface with both active and passive 0-10V dimmers without additional circuitry, while the output can drive an optocoupler to provide isolated dimming control from the secondary to the primary. 2 Features ●● 0% to 100% PWM output ●● 15V to 60V operating voltage xx 1% PWM duty cycle tolerance ●● 3-in-1 dimmer interface xx 0-10V linear dimming xx Selectable frequency range via external capacitor xx 0-10V PWM dimming xx Unique duty cycle drive to account for non-linear optocoupler delay xx Single resistor dimming ●● Integrated current source for driving 0-10V dimmer ●● SOIC-8 package ●● Integrated optocoupler driver for isolated applications ●● Low power shutdown mode 3 Applications ●● 0-10V LED dimming application ●● 3-in-1 LED driver interface chip (0-10V linear, 0-10V PWM and R dimming) dimming LED driver application VOUT AC Input 3-in-1 Dimming Control iW3636 LED Controller 0-10V PWM RTN or iW339 Dimming VCC VIN 10V DRV DIM 0V FLT SD GND CF 0-10V Analog or Resistive Figure 3.1 : iW339 Typical Application Circuit Product Summary www.dialog-semiconductor.com Rev. 0.3 Preliminary 1 of 5 27-September-2017 © 2017 Dialog Semiconductor iW339 SSL Interface Controller for Analog (0-10V), PWM, and Resistor Dimming with Optocoupler Delay Elimination 4 Pinout Description iW339 1 VIN SD 8 2 GND CF 7 3 VCC FLT 6 4 DRV DIM 5 Figure 4.1 : 8-Lead SOIC Package Pin Number Pin Name Type 1 VIN Analog Input 2 GND Ground Ground. 3 VCC Power Power supply for control logic. 4 DRV Output PWM driver. 5 DIM Analog Input Dimming interface connection. 6 FLT Analog Input Dimming signal filter capacitor connection. 7 CF Analog Input Sets the PWM output frequency: 100Hz to 50kHz. 8 SD Analog Input Shuts down the IC if voltage is over 2V. Product Summary www.dialog-semiconductor.com Pin Description Power supply up to 60V. Rev. 0.3 Preliminary 2 of 5 27-September-2017 © 2017 Dialog Semiconductor iW339 SSL Interface Controller for Analog (0-10V), PWM, and Resistor Dimming with Optocoupler Delay Elimination 5 Absolute Maximum Ratings Absolute maximum ratings are the parameter values or ranges which can cause permanent damage if exceeded. Parameter Symbol VIN to GND VCC Value Units -0.3 to 65 V DIM to GND -0.3 to 65 V DRV, FLT, CF, SD to GND -0.3 to 5 V ±2 kV -65 to +150 °C 150 °C ESD rating (HBM) Storage temperature range Maximum junction temperature Product Summary www.dialog-semiconductor.com Rev. 0.3 Preliminary 3 of 5 27-September-2017 © 2017 Dialog Semiconductor iW339 SSL Interface Controller for Analog (0-10V), PWM, and Resistor Dimming with Optocoupler Delay Elimination 6 Physical Dimensions Figure 6.1 : Physical Dimensions of 8-Pin SOIC Package 7 Ordering Information Part Number Options Package Description iW339-00 Standard PWM Output SOIC-8 Tape & Reel1 iW339-01 Calibration Capable PWM Output SOIC-8 Tape & Reel1 Note 1. Tape and reel packing quantity is 2,500/reel. Minimum packing quantity is 2,500. Product Summary www.dialog-semiconductor.com Rev. 0.3 Preliminary 4 of 5 27-September-2017 © 2017 Dialog Semiconductor iW339 SSL Interface Controller for Analog (0-10V), PWM, and Resistor Dimming with Optocoupler Delay Elimination 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 specification 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. 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