LED Flashlight HT45F3420 Characteristics ► Up to 800 lm at 8W ► Low voltage indicator ► Constant Current control – CC ► Protection functions Over Current Protection – OCP Under Voltage Protection – UVP ► Two ways to change mode Mode switch Power switch ► 5 Lighting modes High Middle Low Flash SOS Application Areas 2015 Holtek New Product Presentation G05 Block Diagram Switch VBAT Sense H.R. PWM A/D 18650 MCU HT45F3420 Mode Switch I/O A/D DC-DC Buck & LED Current Sense I/O Indicator Application Circuit Power Switch Bypass Capacitor Mode Switch and Low Power Indicator HT45F3420 Master MCU Lighting Constant Current Control 2015 Holtek New Product Presentation G05