Datasheet > iW3637

iW3637

更新时间： 2024-11-27 14:57:55

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
8页	607K
描述
Second-Stage Buck LED Driver with Exceptional Deep Dimming Performance for Commercial Lighting Applications

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iW3637 数据手册

iW3637

Oﬀ-line LED Driver Controller Supports Wide

Range of PWM Dimming Interfaces

1 Description

The iW3637 is a high-performance AC/DC power controller optimized for non-isolated buck or isolated ﬂyback converter

applications to step-down a high-voltage DC input to drive LEDs in SSL lighting applications. A converter designed

with the iW3637 can work with a DC input voltage from a front-end, oﬀ-line boost converter to minimize low frequency

output ripple current, and virtually eliminate all ﬂicker in the system. It uses Renesas’ PrimAccurate™ advanced

sensing technology to achieve excellent output current regulation without the need for direct voltage or current feedback

components. It also eliminates the need for external loop compensation while maintaining stability across all operating

conditions.

The iW3637 oﬀers a 1% to 100% dimming range and provides a dedicated PWM dimming input pin that supports a wide

variety of dimming application interfaces such as wireless modules, MCUs or 0-10V interfaces. In addition, the iW3637

accepts a secondary PWM input to allow maximum output current conﬁguration.

Renesas’ innovative proprietary technology maximizes the iW3637 performance in an SOIC-8 package. It provides

maximum design ﬂexibility by providing two multi-function pins to conﬁgure IC functions such as the dimming curve and

minimum dimming level. Additionally, the iW3637 features a soft-oﬀ function before entering into light-oﬀ mode, where

the device remains alive with minimal standby power consumption.

2 Features

● Wide V_CCoperating range from 7.5V to 30V

● Fast dimming transient response

● Supports buck and ﬂyback topologies with input from

front-end oﬀ-line boost converter or rectiﬁed AC input

● Enhanced MOSFET driver supports output power up

to 150W in an SOIC-8 package

● Built-in over-temperature protection with temperature-

current derating

● PrimAccurate^TMsensing achieves tight output current

● External NTC-based over-temperature protection

regulation (±3%)

(iW3637-02 only)

● Independent maximum load current setting interface

● Low standby power

● Conﬁgurable dimming curve: linear or logarithm

● Built-in soft-start

● Wide dimming range 1% - 100%

● Active start-up scheme enables fast start-up

● Conﬁgurable minimum dimming setting: dim-to-oﬀ,

1%, 5% or 10%

● Fault protection: output open, output over-voltage,

output short and input voltage under-voltage

protections

● Conﬁgurable 72kHz or 90kHz PWM switching

frequency with quasi-resonant operation

● Light-oﬀ mode with soft-oﬀ feature

3 Applications

● 0-10V dimmable LED drivers

● Dimmable commercial T8

● External and ﬁxture driver lighting applications

● Wireless and intelligent LED lighting

Product Summary

Rev. 1.5

05-Apr-2023

1 of 8

www.renesas.com

12 3 4 5 6 7 8

中文翻译

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与iW3637相关器件

型号	品牌	获取价格	描述	数据表
iW3638	RENESAS	获取价格	Second-Stage Buck LED Driver with Exceptional Deep Dimming Performance for Commercial Ligh
iW3640	RENESAS	获取价格	Flickerless? 25W Dual-Channel Solid-State Lighting LED Driver for Color Corrected, Sunset
iW3658	RENESAS	获取价格	Dimmable Single-Stage 15W SSL LED Driver with Integrated High-Voltage FET
iW3662	RENESAS	获取价格	Low Voltage SSL LED Driver for MR16 Applications Offers Universal Transformer Compatibilit
iW3671	RENESAS	获取价格	Power Factor Correction Flyback Controller for Front-End Power Conversion in Commercial SS
iW3677	RENESAS	获取价格	Power Factor Correction Flyback Controller for Front-End Power Conversion in Commercial SS
iW3688	RENESAS	获取价格	Advanced, Single-Stage, LED Driver Offers Best Dimming Performance and Dimmer Compatibilit
iW3689	RENESAS	获取价格	Advanced, Single-Stage, LED Driver Offers Best Dimming Performance and Dimmer Compatibilit
iW380	RENESAS	获取价格	Second-Stage 78V Buck LED Driver with Flicker-Free True DC Dimming Technology for Commerci
iW3827	RENESAS	获取价格	High Power Factor, Constant-Voltage Controller with Integrated 650V Power MOSFET

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