高效LED升压驱动Small Package, High Performance, Asynchronies Boost for WLED Driver CXLE8167是一款专用于白光LED阵列的高频升压驱动芯片。其内置的0.19Ω功率管和2.0A的电流极限使得CXLE8167能为7~10吋LCD面板提供背光驱动（驱动13并3/4串白光LED阵列）1MHz固定频率电流控

   产品概述 返回TOPgjK嘉泰姆

        CXLE8167是一款专用于白光LED阵列的高频升压驱动芯片。其内置的0.19Ω功率管和2.0A的电流极限使得CXLE8167能为7~10吋LCD面板提供背光驱动（驱动13并3/4串白光LED阵列）。CXLE8167采用1MHz固定频率电流控制模式升压架构，通过设定外部反馈电阻上电压为200mV，使得CXLE8167既能精确的控制LED输出电流，同时保证了驱动电路高效特性。CXLE8167内置输出过压保护功能，利用SW引脚监测输出电压，当出现LED开路时，IC能自动关断实现保护。同时IC内置多种保护措施，如：软启动，过流保护，过温保护和输入欠压保护。CXLE8167采用薄型TSOT23-5封装，为节约PCB空间和减少BOM表提供最优方案。The CXLE8167 is a high frequency, asynchronous boost converter designed for driving white LED arrays. With integrated 0.19Ω power switch and 2A current limit, the CXLE8167 provides enough driving capability for 7”~10” LCD backlighting(13 strings of 3 or 4 LEDs each). The device uses current mode, fixed frequency architecture to regulate the LED current, which is measured through an external current sense resistor. Its low 200mV feedback voltage reduces power loss and improves efficiency. With the built-in over-voltage protection function (OVP), the SW pin monitors the output voltage and turn off the device if an over-voltage condition is present due to an open circuit condition. Other features include soft start, over-current limiting, thermal protection and under-voltage lockout. The CXLE8167 is available in the tiny TSOT23-5 package to provide the best solution for PCB space saving and total BOM cost.

   产品特点 返回TOPgjK嘉泰姆

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‧ 输入电压范围：2.6V~5.5VgjK嘉泰姆

‧ 内置0.19Ω，18V功率开关</p>

‧ 峰值效率达93%gjK嘉泰姆

‧ 芯片表面温度低@ILED=180mA（VIN=3.6V）</p>

‧ 1MHz开关频率</p>

‧ 2A电流极限gjK嘉泰姆

‧ 内置LED开路保护</p>

‧ 内置软启动功能</p>

‧ 兼容PWM和DC两种调光方式gjK嘉泰姆

‧ TSOT23-5封装gjK嘉泰姆

‧ 符合RoHS规范及Pb-FreegjK嘉泰姆

2.6V to 5.5V Input RangegjK嘉泰姆

Internal 0.19
, 18V MOSFET SwitchgjK嘉泰姆

High Efficiency Up to 93%gjK嘉泰姆

Lower Surface Temperature at ILED=180mAgjK嘉泰姆

1MHz Switching FrequencygjK嘉泰姆

2A Current LimitgjK嘉泰姆

Open LED Overvoltage ProtectiongjK嘉泰姆

Internal Soft-StartgjK嘉泰姆

PWM and DC Dimming ControlgjK嘉泰姆

Available in TSOT23-5 PackagegjK嘉泰姆

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

Halogen-FreegjK嘉泰姆

   应用范围 返回TOPgjK嘉泰姆

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‧ 7~10吋LCD面板背光驱动gjK嘉泰姆

‧ MID背光驱动gjK嘉泰姆

‧ 上网本（Netbook）背光驱动</p>

‧ 便携式多媒体设备gjK嘉泰姆

‧ GPS导航系统gjK嘉泰姆

7” to 10” LCD PanelsgjK嘉泰姆

MID BacklightinggjK嘉泰姆

Netbook BacklightinggjK嘉泰姆

Portable Media PlayersgjK嘉泰姆

GPS Navigation SystemsgjK嘉泰姆

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