IS31BL3212

IS31BL3212 FOUR CHANNEL CONSTANT CURRENT LED DRIVER January 2012 GENERAL DESCRIPTION The IS31BL3212 provides four regulated current sources, delivers up to 23mA of load current to accommodate four white LEDs. It requires no charge pump, has no noise and significantly improved the efficiency. The serial digital input is used to enable, disable, and set current for each LED with 16 settings down to 0.69mA. A low-current shutdown feature disconnects the load from the input and reduces quiescent current typically 1.0mA. The IS31BL3212 is available in a Pb-free, space-saving 2mm×2mm DFN-8 package. FEATURES        Ultra low headroom voltage Cost effective LED driver Four channel constant current output ideal for driving LEDs Best noise and efficiency performance Ultra low quiescent supply current: 1.0mA (typ.) Highly integrated design, minimal component Low shutdown current: 1.0μA (typ.) APPLICATIONS    White LED display backlights White LED keypad backlights Cell Li-ion battery-operated equipment including PDAs, hand-held PCs, cellular phone TYPICAL APPLICATION CIRCUIT http://www.DataSheet4U.net/ Figure 1 Typical Application Circuit (IS31BL3212) Figure 2 Application Circuit for Less Than 4 LEDs (IS31BL3212) Note: If less than four LEDs connected, the left pin can be floating or connected to GND. Connecting to GND is recommended. Integrated Silicon Solution, Inc. – www.issi.com Rev.A, 12/29/2011 1 datasheet pdf - http://www.DataSheet4U.net/ IS31BL3212 PIN CONF...