AS1111 Datasheet PDF

ams AS1111

The AS1111 devices are ideal for LED displays and keyboard backlights, as well as lighting management units for battery powered audio devices such as • MP3 and CD players, • Mobile and cordless phones, • PDAs, • Portable DVD players, and • Consumer electronics.

Part No.	AS1111
Datasheet	AS1111 Download
Manufacturer	ams
Description	Low-Dropout LED Drivers
Buy	Stock & Price

GENERAL DESCRIPTION

The AS1111A/AS1111B/AS1111C are LED drivers designed to match current source bias for any color LED, including white and blue. The devices can drive up to 4 high-current LEDs, and the LED current is programmable using an external resistor (RSET). The AS1111A LED currents are 460 x ISET (per LED, typ) at an LED cathode voltage (VSAT) of 150mV and 650 x ISET (typ) at a VSAT of 1V, where ISET is the current through RSET connected to pin CTRL. The AS1111B & AS1111C LED currents are 230 x ISET (per LED, typ) at a VSAT of 150mV and 325 x ISET (typ) at a VSAT of 1V. All AS1111 versions incorporate a chip-enable feature via pin EN. When the devices are disabled, the supply current drops down to less than 1μA. The AS1111A and AS1111B are available in a 6-pin WL-CSP package with 0.4mm pitch. The AS1111C is available in an 8-pin MLPD (2x2mm) package with 0.5mm pitch. Ordering Information and Content Guide appear at end of datasheet. Figure 1: Added Value of Using AS1111 Key Be...