串联驱动2到10个白光LED电流相同亮度均匀的1MHz高效率升压转换器CXLE8160低导通电阻低反馈电压降低了功率损耗实现高效率

CXLE8160是一个电流模式和固定频率升压转换器，集成N-FET驱动多达10个串联白光LED。串联允许LED电流相同，亮度均匀。它的低导通电阻和低反馈电压降低了功率损耗，实现了高效率。快速开关频率（典型为1MHz）允许使用小尺寸电感以及输入和输出电容器。过电压保护功能通过OVP引脚监测输出电压，如果OVP电压超过过电压阈值，则停止IC的切换。内部软启动电路消除启动过程中的浪涌电流。CXLE8160还集成了欠压锁定、超温保护和电流限制电路，以在异常情况下保护IC

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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The CXLE8160 is a current-mode and fixed frequency boost converter with an integrated N-FET to drive up to 10 white LEDs in series.The series connection allows the LED current to be identical for uniform brightness. Its low on-resistance of NFET and low feedback voltage reduce power loss and achieve high efficiency. Fast switching frequency(1MHz typical) allows using small-size inductor and both of input and output capacitors. An over-voltage protection function, which monitors the output voltage via OVP pin, stops switching of the IC if the OVP voltage exceeds the over voltage threshold. An internal soft-start circuit eliminates the inrush current during start-up. The CXLE8160 also integrates under-voltage lockout, overtemperature protection, and current limit circuits to protect the IC in abnormal conditions.The CXLE8160 is available in a SOT-23-6 and TSOT-23-6 package

   产品特点 返回TOP

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· Wide Input Voltage from 2.5V to 6V 

· 0.3V Reference Voltage 

· Fixed 1MHz Switching Frequency 

· High Efficiency up to 88% 

· 100Hz to 200kHz PWM Brightness Control Frequency 

· Open-LED Protection 

· Under-Voltage Lockout Protection 

· Over-Temperature Protection 

·<1μA Quiescent Current during Shutdown 

· SOT-23-6 and TSOT-23-6A Package 

· Lead Free and Green Devices Available (RoHS Compliant)

   应用范围 返回TOP

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· White LED Display Backlighting 

· Cell Phone and Smart Phone 

· PDA, PMP, MP3 

· Digital Camera

   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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Lighting and Display Product > White LED Driver
Part_No	Topology	Archi tecture	Input  Voltage (V)		Adj. Output  Voltage V	No.  of  LEDs	LED Current  (Max) (A)	Switch Current Limit (A)	Current Sense Voltage (typ)(V)	Switching Frequency (kHz)	Dimming Control	Package
			min	max	max
CXLE8153	Boost	CM	2.7	6	32	8	0.03	0.9	0.25	1000	Analog	SOT23-6
CXLE8154	Boost	VM	2.5	6	19	4	0.03	0.4	0.25	1000	Analog PWM	SOT23-6
CXLE8155	Boost	CM	2.7	21	30	8	0.6	3.5	0.5	1200	Analog	DFN3x3-10
CXLE8156	Charge  Pump	-	2.8	4.5	-	4	0.03	-	-	1000	Analog PWM  Digital	QFN4x4-16
CXLE8157	Charge  Pump	-	2.8	4.5	-	6	0.03	-	-	1000	Analog PWM Digital	QFN4x4-16
CXLE8158	Charge  Pump	-	2.8	4.5	-	4	0.03	-	-	1000	Analog PWM Digital	QFN3x3-16
CXLE8159	Boost	CM	2.5	6	24	6	0.03	1.2	0.1	1000	Analog PWM	SOT23-6
CXLE8160	Boost	CM	2.5	6	39	10	0.03	0.9	0.3	1000	Analog PWM	SOT23-6
CXLE8161	Boost	CM	2.5	6	24	6	0.03	1.2	0.2	1000	Analog PWM	SOT23-6
CXLE8162	Boost	CM	2.5	6	40	10	0.03	1.5	0.2	600	Analog PWM	TDFN2x2-6
CXLE8163	Boost	CM	2.5	6	24	6	0.03	2	0.2	1500	Analog PWM	SOT23-6
CXLE8164	Buck	CM	3	5.5	-							SOT23-5
CXLE8165	Boost	CM	6	24	65	17	0.18per string	3.3	0.5	200   ~ 900	External PWM Dimming/I2C	TDFN5x5-16
CXLE8166	Boost	CM	2.7	6	40	10	0.03	1.5	0.2	600	Analog  PWM	TDFN2x2-6