AWINIC AW36404
The AW36404 is a low voltage-drop current sink LED l driver, which supports both flash and torch modes. The current-regulation sink integrated in the chip makes the LED current be capable of keeping a constant when input voltage, LED forward voltage or i temperature are changing. The LED current can be t adjusted among 64 steps by sending 1-wire pulse n into the EN pin, and the maximum value is 400mA.FEATURES
GENERAL DESCRIPTION
● Front Flash LED Driving● 400mA Maximum Flash/Torch Current
● 1-Wire Control Flash/Torch Mode
● 64 Steps Dimming
● Flash Timeout Protection: 1.2s
● LED Current Accuracy: ±8%
● Low Dropout Voltage: 100mV@400mA (Typ.)
● Efficiency: 94% (VIN=3.6V, VF=3.4V)
● LED Short Protection
● Under Voltage Lock Out (UVLO)
● Over Thermal Protection(OTP)
● Ultra Small 1.5mm×1.5mm DFN-8 Package
● Compatible with AW36406
APPLICATIONS
The AW36404 is available in an ultra-small 1.5mm× e 1.5mm×0.55mm DFN-8 package. And only one multi-layer ceramic capacitor is needed for the peripheral of the solution. In shut down mode, The AW36404 turns off all d internal circuit and the consumption is less than 1μA. i The device requires 2.7V~5.5V input voltage range nf and an operating temperature range of -40~85℃. o● Cell Phone C TYPICAL APPLICATION CIRCUIT icInput Voltage: 2.7V~5.5V CIN=2.2μF in 10V 5 VIN AW36404 2 aw GPIO 1-wire signal n≤64 7 FLASH/TORCH LED 8 EN NC 3,6 AGND PGND 1 4,9 Figure 1.