iW337-30

iW337 Signal Interface Controller for Analog (0–10V), PWM, and Resistor Dimming 1 Description The iW337 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 iW337 converts either of these three signals into a 1%-100% PWM duty cycle that can then be used to provide a dimming signal to a primary-side LED driver such as the iW3631, removing the need for transformers or other driver circuitry. The output PWM frequency can be programmed from 100Hz to 50kHz through a single capacitor to ground. The input to the iW337 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 ● 15V to 60V operating voltage ● 1% to 100% PWM output ● 3-in-1 dimmer interface x 1% PWM duty cycle tolerance x 0-10V linear dimming x Selectable frequency range via external capacitor x 0-10V PWM dimming ● Low power shutdown mode x Single resistor dimming ● Integrated current source for driving 0-10V dimmer ● SOIC-8 package ● Integrated optocoupler driver for isolated applications 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 iW3631 LED Controller 0-10V PWM RTN or iW337 Dimming VCC VIN 10V DRV DIM 0V FLT SD GND CF 0-10V Analog or Resistive Figure 3.1 : iW337 Typical Application Circuit Product Summary www.renesas.com Rev. 1.1 1 of 5 09-Feb-2022 © 2022 Renesas Electronics iW337 Signal Interface Controller for Analog (0–10V), PWM, and Resistor Dimming 4 Pinout Description iW337 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.renesas.com Pin Description Power supply up to 60V. Rev. 1.1 2 of 5 09-Feb-2022 © 2022 Renesas Electronics iW337 Signal Interface Controller for Analog (0–10V), PWM, and Resistor Dimming 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.renesas.com Rev. 1.1 3 of 5 09-Feb-2022 © 2022 Renesas Electronics iW337 Signal Interface Controller for Analog (0–10V), PWM, and Resistor Dimming 6 Physical Dimensions Figure 6.1 : Physical Dimensions of 8-Pin SOIC Package 7 Ordering Information Part Number Options Package Description iW337-00 Turn-off option disabled SOIC-8 Tape & Reel1 iW337-30 Turn-off option enabled SOIC-8 Tape & Reel1 Note 1: Tape and reel packing quantity is 2,500/reel. Minimum packing quantity is 2,500. Product Summary www.renesas.com Rev. 1.1 4 of 5 09-Feb-2022 © 2022 Renesas Electronics iW337 Signal Interface Controller for Analog (0–10V), PWM, and Resistor Dimming IMPORTANT NOTICE AND DISCLAIMER RENESAS ELECTRONICS CORPORATION AND ITS SUBSIDIARIES (“RENESAS”) PROVIDES TECHNICAL SPECIFICATIONS AND RELIABILITY DATA (INCLUDING DATASHEETS), DESIGN RESOURCES (INCLUDING REFERENCE DESIGNS), APPLICATION OR OTHER DESIGN ADVICE, WEB TOOLS, SAFETY INFORMATION, AND OTHER RESOURCES “AS IS” AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS. These resources are intended for developers skilled in the art designing with Renesas products. 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Product Summary www.renesas.com Rev. 1.1 5 of 5 09-Feb-2022 © 2022 Renesas Electronics