Datasheet > RT4531

RT4531

更新时间： 2024-01-29 18:29:41

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
14页	195K
描述
Dual Channel 10s2p WLED Drivers

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中文翻译

获取价格

技术参数
数据手册

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RT4531 技术参数

Status：	Active	Vin (min)(V)：	2.5
Vin (max)(V)：	5.5	SW Freq (typ)(kHz)：	1000
Number of LEDs (max)(pcs)：	10	Iout (max)/channel(mA)：	20
Iq (typ)(mA)：	1.2	Dimming Control：	PWM;Pulse
Topology：	Boost + Current Source	Features：	Enable Input;OCP;OVP;UVP
Package Type：	WL-CSP1.35x1.35-9(BSC)

RT4531 数据手册

RT4531

Dual Channel 10s2p WLED Drivers

General Description

Features

^Input Voltage Range : 2.5V to 5.5V

The RT4531 is a dual-channel current source with high-

efficiency asynchronous boost converter for backlight

application. The RT4531 has built-in 1.5A/36V power

MOSFET and two high current-matching capability current

sink, so RT4531 can drives up 10s2p white LED. The

RT4531 can allow very low voltage headroom control,

therefore to improve LEDstrings efficiency effectively.

^Internal Soft-Start, UVLO, OTP, OCP, OVP

^Typical Shutdown Current : < 1μA

^1MHz Switching Frequency

^Drives Up to 10 WLEDs in Two Strings

^Independent PWM Dimming and 1-Wire Dimming

Control

^PWM Dimming Frequency from 20k to 100kHz

^Up to 10 Bit Dimming Resolution

^LED Current Accuracy 2% ( > 5mA)

^LED Current Matching 2% ( > 5mA)

^Built-in IFB1/IFB2 pin OVP, Short Protection, and

Un-Use Detection

The RT4531 supports both PWM dimming and 1-wire

digital dimming interface and it can realize 10 bit

brightness code programming.

The RT4531 provides complete protection functions such

as input Under-Voltage Lockout (UVLO), Over-Current

Protection (OCP), Output Over Voltage (OVP) and Over-

Temperature Protection (OTP).

Ordering Information

RT4531

The RT4531 is available in the WL-CSP-9B 1.35x1.35

(BSC) package.

Package Type

WSC : WL-CSP-9B 1.35x1.35 (BSC)

Applications

Note :

 Smart Phones

Richtek products are :

 Probable Instruments

 RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

 Suitable for use in SnPb or Pb-free soldering processes.

 Backlight for Small and Media Form

 Factor LCDDisplay with Single-cell Battery Input

Simplified Application Circuit

VIN

RT4531

2P10S

WLEDs

Enable

PWM Dimming

IFB1

IFB2

ISET

PWM

GND AGND

is a registered trademark of Richtek Technology Corporation.

DS4531-01 July 2016

www.richtek.com

12 3 4 5 6 7...14

中文翻译

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与RT4531相关器件

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