CXLE87159电流模式单片降压LED驱动器4.5-20V输入通过两个集成的N通道mosfet提供2A的连续输出电流固定1MHz开关频率输入欠压锁定启动电流失控保护

CXLE87159是一个电流模式单片降压LED驱动器。CXLE87159在4.5-20V的输入范围内工作，通过两个集成的N通道mosfet提供2A的连续输出电流。内部同步功率开关无需使用外部肖特基二极管即可提供高效率。在轻负载下，LED驱动器以低频工作，以保持高效率和低输出纹波。CXLE87159通过LED短路保护、热保护、启动电流失控保护、输入欠压锁定，确保了稳健性

4.5V至20V工作输入范围2A输出电流

效率高达94%

轻载高效（>85%）

固定1MHz开关频率
输入欠压锁定

启动电流失控保护

LED短路保护
热保护

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 CXLE87159 is a current mode monolithic buck LED driver. Operating with an input range of 4.5-20V, CXLE87159 delivers 2A of continuous output current with two integrated N-Channel MOSFETs. The internal synchronous power switches provide high efficiency without the use of an external Schottky diode. At light loads, the LED driver operates in low frequency to maintain high efficiency and low output ripple. The CXLE87159 guarantees robustness with LED short protection, thermal protection, start-up current run-away protection, input under voltage lockout. The CXLE87159 is available in 6-pin and 8-pin TSOT packages, which provide a compact solution with minimal external components.

   产品特点 返回TOP

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4.5V to 20V operating input range 2A output current 

Up to 94% efficiency 

High efficiency (>85%) at light load 

Fixed 1MHz Switching frequency 

Input under voltage lockout 

Start-up current run-away protection 

LED short protection 

Thermal protection 

Available in TSOT23-6 and TSOT23-8 packages

   应用范围 返回TOP

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LED Driver

   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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DC/DC (照明驱动产品）
产品型号	封装	拓扑	频率	输入		调光	过流保护 短路保护
				Vin(V)	Iout(A)
CXLE87158	ESOP8   SOT23-6	Buck, Boost	Constant  2us toff	4.6~44	2A    peak	PWM/Analog	Y
CXLE87159	SOT23-6	Buck	1MHz	3.8~24	2A	PWM/Analog	Y
CXLE87160	SOT23-6	Buck	Constant  2us toff	4.6~30	2A    peak	PWM/Analog	Y
CXLE87161	SOT23-6	Buck	1MHz	4.5~28	1.2A	PWM/Analog	Y