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Overview
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The MIC2873 is a high-current, high-efficiency flash LED driver which can operate in either torch or flash mode. The MIC2873 has a built-in, internally-compensated, current-mode PWM 2MHz boost converter which allows for the use of a very small inductor and output capacitor for stepping up the supply voltage to a high enough value at the OUT pin to drive the LED current. If the supply voltage is high enough, the synchronous switch of the converter is then fully turned-on and the LED driver operates in linear mode. MIC2873 also features a configurable safety timer which automatically shuts down the LED current after the safety timer duration is expired if the programmed LED current exceeds a certain current threshold. These features make the MIC2873 an ideal solution for high-resolution camera phone LED flashlight driver applications.
The MIC2873 is a high-current, high-efficiency flash LED driver which can operate in either torch or flash mode. The MIC2873 has a built-in, internally-compensated, current-mode PWM 2MHz boost converter which allows for the use of a very small inductor and output capacitor for stepping up the supply voltage to a high enough value at the OUT pin to drive the LED current. If the supply voltage is high enough, the synchronous switch of the converter is then fully turned-on and the LED driver operates in linear mode. MIC2873 also features a configurable safety timer which automatically shuts down the LED current after the safety timer duration is expired if the programmed LED current exceeds a certain current threshold. These features make the MIC2873 an ideal solution for high-resolution camera phone LED flashlight driver applications.
Refer to User Guide.
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