Flash Led Driver - LG GX300 Service Manual

3. TECHNICAL BRIEF

3.15 Flash LED Driver

The LED current can be programmed up to 1A via an I2Ccompatible interface, along with eight
selectable Flash Time-Out durations. One high-current Flash LED can be driven either in a high-power
Flash mode or a low-power Torch mode. The Strobe pin allows the flash to be toggled via a Flash
enable signal from a camera module. The TX input pin limits the Flash LED current to the Torch current
level during a RF PA pulse, to reduce high loads on the battery. Internal soft-start circuitry limits the
amount of inrush current during start-up.
LGE Internal Use Only
Figure 3.15.1 Flash LED Driver Circuit Diagram
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3. TECHNICAL BRIEF
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