CXLE8167白光LED阵列的高频升压驱动芯片2.0A电流极限为7~10吋LCD面板提供背光驱动13并3/4串白光LED阵列1MHz固定频率电流控制模式升压架构

CXLE8167是一款专用于白光LED阵列的高频升压驱动芯片。其内置的0.19Ω功率管和2.0A的电流极限使得CXLE8167能为7~10吋LCD面板提供背光驱动（驱动13并3/4串白光LED阵列）。CXLE8167采用1MHz固定频率电流控制模式升压架构，通过设定外部反馈电阻上电压为200mV，使得CXLE8167既能精确的控制LED输出电流，同时保证了驱动电路高效特性。CXLE8167内置输出过压保护功能，利用SW引脚监测输出电压，当出现LED开路时，IC能自动关断实现保护。同时IC内置多种保护措施，如：软启动，过流保护，过温保护和输入欠压保护。CXLE8167采用薄型TSOT23-5封装，为节约PCB空间和减少BOM表提供最优方案

目录

1.产品概述       2.产品特点     

3.应用范围       4.技术规格书下载（PDF文档）

5.产品封装       6.电路原理图  

7.相关产品

   产品概述 返回TOP

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        CXLE8167是一款专用于白光LED阵列的高频升压驱动芯片。其内置的0.19Ω功率管和2.0A的电流极限使得CXLE8167能为7~10吋LCD面板提供背光驱动（驱动13并3/4串白光LED阵列）。CXLE8167采用1MHz固定频率电流控制模式升压架构，通过设定外部反馈电阻上电压为200mV，使得CXLE8167既能精确的控制LED输出电流，同时保证了驱动电路高效特性。CXLE8167内置输出过压保护功能，利用SW引脚监测输出电压，当出现LED开路时，IC能自动关断实现保护。同时IC内置多种保护措施，如：软启动，过流保护，过温保护和输入欠压保护。CXLE8167采用薄型TSOT23-5封装，为节约PCB空间和减少BOM表提供最优方案。The CXLE8167 is a high frequency, asynchronous boost converter designed for driving white LED arrays. With integrated 0.19Ω power switch and 2A current limit, the CXLE8167 provides enough driving capability for 7”~10” LCD backlighting(13 strings of 3 or 4 LEDs each). The device uses current mode, fixed frequency architecture to regulate the LED current, which is measured through an external current sense resistor. Its low 200mV feedback voltage reduces power loss and improves efficiency. With the built-in over-voltage protection function (OVP), the SW pin monitors the output voltage and turn off the device if an over-voltage condition is present due to an open circuit condition. Other features include soft start, over-current limiting, thermal protection and under-voltage lockout. The CXLE8167 is available in the tiny TSOT23-5 package to provide the best solution for PCB space saving and total BOM cost.

   产品特点 返回TOP

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‧ 输入电压范围：2.6V~5.5V

‧ 内置0.19Ω，18V功率开关

‧ 峰值效率达93%

‧ 芯片表面温度低@ILED=180mA（VIN=3.6V）

‧ 1MHz开关频率

‧ 2A电流极限

‧ 内置LED开路保护

‧ 内置软启动功能

‧ 兼容PWM和DC两种调光方式

‧ TSOT23-5封装

‧ 符合RoHS规范及Pb-Free

2.6V to 5.5V Input Range

Internal 0.19
, 18V MOSFET Switch

High Efficiency Up to 93%

Lower Surface Temperature at ILED=180mA

1MHz Switching Frequency

2A Current Limit

Open LED Overvoltage Protection

Internal Soft-Start

PWM and DC Dimming Control

Available in TSOT23-5 Package

RoHS Compliant and 100% Lead (Pb)-Free

Halogen-Free

   应用范围 返回TOP

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‧ 7~10吋LCD面板背光驱动

‧ MID背光驱动

‧ 上网本（Netbook）背光驱动

‧ 便携式多媒体设备

‧ GPS导航系统

7” to 10” LCD Panels

MID Backlighting

Netbook Backlighting

Portable Media Players

GPS Navigation Systems

   技术规格书（产品PDF) 返回TOP 

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产品封装图 返回TOP

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电路原理图 返回TOP

 

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白光LED驅動器   > LED背光
Part   Number	remark	Vin (V)	Vout  (max)(V)	FB(V)	IQ(mA)	Isw(A)	Max LED	Peak  Efficency  (%)	Package
CXLE8167	Small Package, High Performance, Asynchronies Boost for WLED Driver	2.6~5.5	18	0.2	0.4	2	15P3S	93	TSOT23-5
CXLE8168	White LED Driver For Buck-Boost Application	6~25	32	Vctrl/10	1.3	1.4	3 x 9 = 27	90	TDFN-8
CXLE8169	White LED Boost Converter with PWM Dimming and Single-Wire Interface	2.7~5.5	38	0.2	0.35	1.3	12	91	TDFN-6
CXLE8170	10 White LED Boost Converter with PWM Dimming and Single-Wire Series   Interface	2.5 ~ 5.5	38.5	0.2/0.3	0.3	1.3	12	88	TSOT23-6,SOT23-6
CXLE8171	10 White LED Boost Converter with PWM Dimming	2.5~5.5	38.5	0.2	0.3	1.3	12	88	TSOT23-6
CXLE8172	6 String White LED Driver with Boost Converter	2.5~24	43	0.5	2	2.5	6 × 10= 60	90	TQFN-20
CXLE8173	4 Strings High Current White LED Driver with Boost Controller	4.5~28	65	0.6	0.75	-	4 x 18 =72	93	SOP-16
CXLE8174	12 String White LED Driver With Boost Controller	4.5~28	65	0.6	1.5	-	216	93	TSSOP-28(EP)