说明

• MIC2871YMK EV, Evaluation Board for the MIC2871 is a high-current, high-efficiency flash LED driver which can operate in either torch mode or flash mode. The MIC2871 has a built-in internally-compensated current-mode PWM 2MHz boost converter which allows the use of very small inductor and output capacitor. It is 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. MIC2871 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 MIC2871 an ideal solution for high resolution camera phone LED flash light driver applications