Datasheet > RT4539A

RT4539A

更新时间： 2024-04-09 19:02:14

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
39页	1118K
描述
39V High Efficiency Boost Converter with I2C Controlled 6-CH LED Driver

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

RT4539A 数据手册

RT4539A

39V High Efficiency Boost Converter with I2C Controlled

6-CH LED Driver

General Description

Features

 Wide Operating Input Voltage: 2.7V to 24V

 High Output Voltage: Up to39V

 Programmable Channel Current: 10.04mA to

35mA

The RT4539A is a high efficiency driver for white LEDs.

It is suitable for single/two cell battery input to drive

LED light bars which contains six strings in parallel.

The internal current sinks support a maximum of ±2%

current mismatching for excellent brightness uniformity

in each string of LEDs. To provide enough headroom

for current sink operation, the Boost converter monitors

the minimum voltage of the feedback pins and

regulates an optimized output voltage for power

efficiency.

 Channel Current Regulation with Accuracy ±3%

and Matching ±2%

 DimmingControls

 Direct PWM Dimming up to 20kHz and

Minimum On-Time to 400ns

 PWM to Analog Dimming up to 20kHz with

9-bit Resolution

The RT4539A has a wide input voltage operating range

 PWM

Programmable

Exponential@11 bits Brightness Control

and/or

I2C-Controlled

with

from 2.7V to 24V and contains I C interface for

Linear@12

bits

controlling the dimming mode, operating frequency and

the LED current. The internal 250mΩ, 39V power

switch with current-mode control provides over-current

protection. The switching frequency of the RT4539A is

adjustable from 300kHz to 1.6MHz, which allows

flexibility between efficiency and component size.

 Digitally Advanced Sloping for Smooth

Dimming

 Adjustable Dimming Mode Control.

 Adjustable Advanced Brightness Control.

 Adjustable Switching Frequency of Boost

Converter from 300kHz to 1.6MHz.

 PFM function for High Efficiency at Light Load

 Programmable Spread Spectrum Scheme and

Edge Rate Control Minimize Switching Noise

and Improve EMI Performance

The RT4539A are available in the WL-CSP-20B

1.71x2.371 (BSC) and WQFN-24L 4x4 packages.

Applications

 TabletandNotebook Backlight

 Protections

 LED Strings Open Detection

 LED Strings Short Protection

 Programmable Current Limit of Boost.

 Programmable Over-Voltage Protection Level

 Over-Temperature Protection

 Integrated Memory by MTP

 20-Ball WL-CSP, with pitch 0.4mm and 24-Lead

WQFN Packages

Simplified Application Circuit

OUT1

OUT2

VIN

PGND

RT4539A

VCP

VOUT

FB1

FB2

FB3

FB4

FB5

FB6

PWM

SCL

MCU

SDA

GND

is a registered trademark of Richtek Technology Corporation

DS4539A-01

December 2022

www.richtek.com

12 3 4 5 6 7...39

中文翻译

下载PDF

与RT4539A相关器件

型号	品牌	获取价格	描述	数据表
RT4703	RICHTEK	获取价格	Triple DC-DC Converter for AMOLED
RT4720AC	RICHTEK	获取价格	暂无描述
RT4722C	RICHTEK	获取价格	暂无描述
RT4723	RICHTEK	获取价格	暂无描述
RT4723P	RICHTEK	获取价格	Dual Output AMOLED Bias
RT4723PWSC	RICHTEK	获取价格	Dual Output AMOLED Bias
RT4730	RICHTEK	获取价格	暂无描述
RT4731	RICHTEK	获取价格	Triple Output AMOLED Bias
RT4801A	RICHTEK	获取价格	Dual Output LCD Bias for Smartphones and Tablets
RT4801H	RICHTEK	获取价格	Dual Output LCD Bias for Smartphones and Tablets

与RT4539A相关文章

BSS138LT3G：一款高效能N沟道MOSFET的全面解析
2024-07-04

16
解读EGP10B二极管资料手册：产品特性、参数分析
2024-07-04

13
RT9164AGG手册资料详解：引脚信息、设计指南
2024-07-04

13
2SA1037KPT资料详解：产品特性、电气参数、设计指南
2024-07-04

16

产品中心

服务支持

精选活动

关于我们

帮助中心

RT4539A

RT4539A 数据手册

与RT4539A相关器件

与RT4539A相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

RT4539A

RT4539A 数据手册

与RT4539A相关器件

与RT4539A相关文章

您还可以找

您在本页遇到什么问题？