Datasheet > iW339

iW339

更新时间： 2024-11-24 14:56:19

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
5页	397K
描述
3-in-1 Secondary-Side Signal Interface Controller with Optimized Output Drive

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iW339 数据手册

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

● 3-in-1 dimmer interface

1% PWM duty cycle tolerance

Selectable frequency range via external capacitor

0-10V linear dimming

0-10V PWM dimming

Single resistor dimming

Unique duty cycle drive to account for non-linear

optocoupler delay

● Integrated current source for driving 0-10V dimmer

● Integrated optocoupler driver for isolated applications

● SOIC-8 package

● 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

V_OUT

3-in-1

Dimming

Control

AC Input

iW3636

LED Controller

0-10V PWM

RTN

iW339

Dimming

10V

V_CC

V_IN

0-10V Analog

DRV

DIM

FLT

GND

Resistive

Figure 3.1 : iW339 Typical Application Circuit

17-Aug-2022

Product Summary

Rev. 1.2

www.renesas.com

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