描述 Description

The AW9358B is an 8-channel parallel white LED driver with ultra low dropout constant-current source. The AW9358B can drive 8 LEDs and each LED’s maximum current is up to 20mA which is set by the internal resistor. The proprietary Q-MirrorTM technique is used in the AW9358B, which makes the 8 LEDs current matching to ±5%. The AW9358B use 1-Wire Brightness Control, 16-Step Linear Scale LED Brightness Control, which effectively avoid the interference caused by the PWM dimming mode. The AW9358B has an internal deglitch circuit can effec-tively eliminate the influence of the glitch signal for EN input. The AW9358B requires only a 50mV (typical) dropout voltage at a 20mA load. The feature makes AW9358B ideal for battery-operated systems, such as personal digital assistants. The AW9358B only need one ceramic capacitor making the system design easier, and use less PCB. The shutdown current of the AW9358B is less than 0.1uA.The AW9358B is available in QFN 3mmx3mmx0.75mm -16L package and is specified over the -40°C to +85°C temperature range.

特性 Features

Drive up to 8 LEDs with 20mA maximum currentQ-MirrorTM technique ensuring LEDs cur-rent matching accuracy±5%(typical) Ultra low dropout: 50mV/20mA(typical)2.8V to 5.5V operating input voltage range16-step linear scale LED brightness con-trolDeglitch circuit eliminating interference at EN pinNo EMI and switch noiseLess than 0.1uA quiescent current in shutdown modeThermal shutdown protectionWBQFN 3mmx3mmx0.75mm-16L package