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POWER MANAGEMENT
SC621
LED Light Management Unit
Charge Pump, 4 LEDs, 400mA Flash LED, Dual LDOs, and SemWireTM Interface
Features
Description
Input supply voltage range — 3.0V to 5.5V Charge pump modes — 1x, 1.5x and 2x Four programmable current sinks with 32 steps from
0.5mA to 25mA Flash LED — 400mA max in flash mode, 250mA max
continuous for spotlight Two programmable 200mA low-noise LDO regulators Charge pump frequency — 250kHz SemWireTM single wire interface — up to 75kbit/s Backlight current accuracy ±1.5% typical Backlight current matching ±0.5% typical Programmable fade-in/fade-out for main backlight External flash control pin to sync with camera Optional 1s flash time out Automatic sleep mode (LEDs off ) — I = 100μA
Q
Low shutdown current — 0.
SC621 Datasheet
