• [ CXLE88126 ]

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目录

1.产品概述       2.产品特点     tFc嘉泰姆

3.应用范围       4.技术规格书下载（PDF文档）tFc嘉泰姆

5.产品封装       6.电路原理图  tFc嘉泰姆

7.相关产品tFc嘉泰姆

   产品概述 返回TOPtFc嘉泰姆

    CXLE88126是一款固定2MHz或者4MHz频率的电流模同步升压型转换器。该芯片可以给两个通道的闪光灯LED应用分别提供恒定电流驱动，单通道电流最大可以提供1.5A。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。CXLE88126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10.9mA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0.977mA到179mA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。CXLE88126采用12个引脚的小型封装。（Small 12-bump WSCP package）The CXLE88126 is a 2MHz or 4MHz fixed frequency, current mode synchronous boost converter with two current sources. The device is designed to operate up to 1.5A constant current. An industry-standard I2C serial digital input is used to enable, disable and set the current for flash LED. The CXLE88126 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 128 target current levels from 10.9mA to 1.5A. The total LED current of ECXLE88126can deliver is 1.5A (ILED1+ILED2). The dual 128 level current sources provide the flexibility to adjust the current ratios between LED1 and LED2 (ex: ILED1=1.5A and ILED2=OFF, ILED1=OFF and ILED2=1.5A, or a current configuration with a current less than 1.5A, ILED1=700mA and ILED2=300mA). And also in torch mode, the programmable current ranges from 0.977mA to 179mA by 128 steps. An over voltage protection feature keeps the output voltage below the OVP threshold in the case of an open LED and an output short circuit protection limits the output current during an output short to GND. NTC function is designed for temperature sensing and current scale back. CXLE88126is available in a small 12-bump WCSP package.

   产品特点 返回TOPtFc嘉泰姆

‧2.5V~5.5V的输入电压范围tFc嘉泰姆

‧转换效率高达85%tFc嘉泰姆

‧2MHz或者4 MHz的固定开关频率tFc嘉泰姆

‧I²C兼容接口tFc嘉泰姆

- 400kHz的串行传输速率tFc嘉泰姆

- 选择闪光/常亮/IR/待机等状态tFc嘉泰姆

- 编程调控闪光LED电流，电流范围从10.9mA到1.5AtFc嘉泰姆

- 编程调控常亮LED电流，电流范围从0.977mA到179mAtFc嘉泰姆

- 编程调控闪光超时计时器tFc嘉泰姆

- 编程调控电流斜率计时器tFc嘉泰姆

- 编程调控输入电压闪存监视器（IVFM）tFc嘉泰姆

‧真正的负载断开tFc嘉泰姆

‧输入电流限制tFc嘉泰姆

‧输出过压和短路、过温保护电路tFc嘉泰姆

‧NTC监测功能tFc嘉泰姆

‧12-Bump WCSPtFc嘉泰姆

‧符合ROHS标准，百分百无铅、无卤族元素tFc嘉泰姆

2.5V to 5.5V Input Supply RangetFc嘉泰姆

1.5A Total Allowed LED Current During OperationtFc嘉泰姆

(ILED1+ILED2=1.5A)tFc嘉泰姆

Up to 85% EfficiencytFc嘉泰姆

2MHz or 4MHz Fixed Switching FrequencytFc嘉泰姆

I2C-Compatible InterfacetFc嘉泰姆

- 400-kHz Serial Transfer RatetFc嘉泰姆

- Flash/Torch/IR/StandbytFc嘉泰姆

- Programmable Flash LED Current from 10.9mA totFc嘉泰姆

1.5AtFc嘉泰姆

- Programmable Torch LED Current from 0.977mAtFc嘉泰姆

to 179mAtFc嘉泰姆

- Programmable Flash Time-Out TimertFc嘉泰姆

- Programmable Current Ramp TimertFc嘉泰姆

- Programmable Input Voltage Flash MonitortFc嘉泰姆

(IVFM)tFc嘉泰姆

True Load DisconnecttFc嘉泰姆

Input Current LimittFc嘉泰姆

Output Over-Voltage, Short Circuit andtFc嘉泰姆

Over-Temperature ProtectiontFc嘉泰姆

NTC MonitoringtFc嘉泰姆

0.4mm Pitch, 12-Bump WCSPtFc嘉泰姆

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

Halogen-FreetFc嘉泰姆

   应用范围 返回TOPtFc嘉泰姆

‧LED闪光灯tFc嘉泰姆

‧智能手机tFc嘉泰姆

‧平板电脑tFc嘉泰姆

LED Photo Flash/MovietFc嘉泰姆

Smart phonetFc嘉泰姆

TabletstFc嘉泰姆

   技术规格书（产品PDF) 返回TOP tFc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！tFc嘉泰姆

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产品封装图 返回TOPtFc嘉泰姆

atFc嘉泰姆

电路原理图 返回TOPtFc嘉泰姆

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◀ 上一篇:CXLE88125固定2MHz或4MHz频率的电流模同步升压型转换器两个通道的闪光灯LED提供恒定电流驱动单通道电流提供1.5AI2C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▶:CXLE88127闪光灯LED应用提供1.5A的恒定电流驱动固定2MHz或者4MHz频率的电流模同步升压型转换器标准的I2C串行数字输入接口用于启用禁用和设置LED闪光灯的电流四个逻辑输入控制端NTC监测功能

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