• [ CXLE88127 ]

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目录

1.产品概述       2.产品特点     s4H嘉泰姆

3.应用范围       4.技术规格书下载（PDF文档）s4H嘉泰姆

5.产品封装       6.电路原理图  s4H嘉泰姆

7.相关产品s4H嘉泰姆

   产品概述 返回TOPs4H嘉泰姆

     CXLE88127是一款固定2MHz或者4MHz频率的电流模同步升压型转换器。该芯片可以给闪光灯LED应用提供最大1.5A的恒定电流驱动。配备行业标准的I2C串行数字输入接口，用于启用、禁用和设置LED闪光灯的电流。CXLE88127有四个逻辑输入控制端，分别为硬件闪光灯使能（STROBE）、闪光灯中断（TX）、Torch使能信号（TORCH/TEMP）、芯片使能信号（HWEN）。在闪光模式下，LED电流源可以提供从21.8mA到1.5A不等的目标电流。并且在常亮模式下，可编程电流的范围也可以在1.954mA到358mA的范围内变化。过压保护功能保证输出电压低于LED开路情况下的过压门限。当输出短路到地时，输出短路保护功能可以限制输出电流。NTC功能会根据温度升高限制输出电流。CXLE88127采用12个引脚的小型封装。（Small 12-bump WSCP package）The CXLE88127 is a 2MHz or 4MHz fixed frequency, current mode synchronous boost converter with two current sources. The device is designed to operate 1.5A constant current driver for single channel. An industry-standard I2C serial digital input is used to enable, disable and set the current for flash LED. The CXLE88127 has four logic inputs including a hardware Flash Enable (STROBE), a Flash Interrupt input (TX), a hardware Torch Enable (TORCH/TEMP), Acitve High Enable (HWEN). In flash mode, the LED current source provides target current levels from 21.8mA to 1.5A. And also in torch mode, the programmable current ranges from 1.954mA to 358mA. The CXLE88127contains serveral protect functions in abnormal conditions such as: Overvltage Protection, Current Limit, NTC Monitoring Protection, Undervoltage Lockout Protection, Thermal Shutdown Protection and LED/OUT short Protection. Built-in circuitry prevents excessive inrush current during start-up. The chip’s quiescent current is less than 1.0μA in shutdown mode. CXLE88127is available in a small 12-bump WCSP package.

   产品特点 返回TOPs4H嘉泰姆

‧2.5V~5.5V的输入电压范围s4H嘉泰姆

‧转换效率高达85%s4H嘉泰姆

‧2MHz或者4 MHz的固定开关频率s4H嘉泰姆

‧I²C兼容接口s4H嘉泰姆

- 400kHz的串行传输速率s4H嘉泰姆

- 选择闪光/常亮/IR/待机等状态s4H嘉泰姆

- 编程调控闪光LED电流，电流范围从21.8mA到1.5As4H嘉泰姆

- 编程调控常亮LED电流，电流范围从1.954mA到358mAs4H嘉泰姆

- 编程调控闪光超时计时器s4H嘉泰姆

- 编程调控电流斜率计时器s4H嘉泰姆

- 编程调控输入电压闪存监视器（IVFM）s4H嘉泰姆

‧真正的负载断开s4H嘉泰姆

‧输入电流限制s4H嘉泰姆

‧输出过压和短路、过温保护电路s4H嘉泰姆

‧NTC监测功能s4H嘉泰姆

‧12-Bump WCSPs4H嘉泰姆

‧符合ROHS标准，百分百无铅、无卤族元素s4H嘉泰姆

2.5V to 5.5V Input Supply Ranges4H嘉泰姆

Up to 85% Efficiencys4H嘉泰姆

2MHz or 4MHz Fixed Switching Frequencys4H嘉泰姆

I2C-Compatible Interfaces4H嘉泰姆

- 400-kHz Serial Transfer Rates4H嘉泰姆

- Flash/Torch/IR/Standbys4H嘉泰姆

- Programmable Flash LED Current from 21.8mA tos4H嘉泰姆

1.5As4H嘉泰姆

- Programmable Torch LED Current from 1.954mAs4H嘉泰姆

to 358mAs4H嘉泰姆

- Programmable Flash Time-Out Timers4H嘉泰姆

- Programmable Current Ramp Timers4H嘉泰姆

- Programmable Input Voltage Flash Monitors4H嘉泰姆

(IVFM)s4H嘉泰姆

True Load Disconnects4H嘉泰姆

Input Current Limits4H嘉泰姆

Output Over-Voltage, Short Circuit ands4H嘉泰姆

Over-Temperature Protections4H嘉泰姆

NTC Monitorings4H嘉泰姆

0.4mm Pitch, 12-Bump WCSPs4H嘉泰姆

RoHS Compliant and 100% Lead(Pb)-Frees4H嘉泰姆

Halogen-Frees4H嘉泰姆

   应用范围 返回TOPs4H嘉泰姆

‧LED闪光灯s4H嘉泰姆

‧智能手机s4H嘉泰姆

‧平板电脑s4H嘉泰姆

LED Photo Flash/Movies4H嘉泰姆

Smart phones4H嘉泰姆

Tabletss4H嘉泰姆

   技术规格书（产品PDF) 返回TOP s4H嘉泰姆

     需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！s4H嘉泰姆

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产品封装图 返回TOPs4H嘉泰姆

as4H嘉泰姆

电路原理图 返回TOPs4H嘉泰姆

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◀ 上一篇:CXLE88126四个逻辑输入控制端硬件闪光灯使能STROBE闪光灯中断TX Torch使能信号TORCH/TEMP芯片使能信号HWEN I2C串行数字输入接口启用禁用和设置LED闪光灯的电流

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下一篇▶:CXLE88128大电流输出的电荷泵LED驱动器用以驱动照相手机或便携式设备的Flash LED外接的两个PIN工作模式Flash模式或Torch模式3A的输出电流可编程的软启动

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