CXLE8873是一种高效率、定频、降压升压型DC/DC恒流输出变换器，其工作电压高于、低于或等于输出电压。该装置适用于单锂离子电池、多电池碱性电池或镍氢电池，其输出电压在电池电压范围内。其他特性包括低于1μa的关机电流、热关机和电流限制
同步整流：效率高达95%
单电感
静态电流：3毫安（50毫安低功率模式：模式引脚高）
高达700mA的连续输出电流
2.2V至5V输入输出电压范围
无需肖特基二极管
关断电流：IQ＜1μA
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[ CXLE8873 ]
目录
7.相关产品
产品概述 返回TOP
The CXLE8873 is high efficiency, fixed frequency, Buck-Boost DC/DC constant output current converter which operates from input voltages above, below or equal to the output voltage. The devices are suitable for single lithium-ion, multicell alkaline or NiMH applications where the output voltage is within the battery voltage range. Other features include a below 1μA shutdown current, thermal shutdown and current limit.
The CXLE8873 converter is available in the 10-pin thermally enhanced DFN3*3-10L or MSOP-10L packages.
产品特点 返回TOP
Synchronous Rectification: Up to 95% Efficiency
Single Inductor
Quiescent Current：3mA (50uA low power mode: mode pin high)
Up to 700mA Continuous Output Current
2.2V to 5V Input and Output Voltage Range
No Schottky Diodes Required
Shutdown current: IQ＜1μA
Package: Small Thermally Enhanced DFN3*3-10L or MSOP-10L
应用范围 返回TOP
Driver LED:1W/3W
Digital cameras and Wireless handsets
Palmtop computers
Handheld instruments
MP3/MP4 players
技术规格书（产品PDF) 返回TOP
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产品封装图 返回TOP
电路原理图 返回TOP
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| 型号 | 工作电压范围 | 输出电流 | 输出电流精度 | 效率 | 工作频率 | 调光功能 | 封装 |
| CXLE8870 | 2.5V-30V | 内置3A MOS | 2% | 90% | 460KHz | 模拟调光/PWM调光 | ESOP-8 |
| CXLE8871 | 2.5V-40V | 内置3A MOS | 2% | 92% | 460KHz | 模拟调光/PWM调光 | ESOP-8 |
| CXLE8872 | 2.5V-40V | 外置MOS扩流 | 2% | 90% | 460KHz | 模拟调光/PWM调光 | SOP-8 |
| CXLE8873 | 2.2V-5.0V | 0.7A | 3% | 95% | 1.15MKHz | PWM调光 | MSOP-10 |
| CXLE8874 | 2.4V-5.5V | 0.5A | SOP-8 | ||||
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