SP7680

www.DataSheet4U.com Solved by . TM SP7680 Complete Backlight Solution LED 2 13 12 11 10 9 5 6 7 8 LED 5 LED 4 15 FEATURES Complete Backlight Solution Separate control for 4 main, 2 sub, and keypad LEDs Built-in 6-bit DAC for precise current setting 2 I C serial interface Data is stored in shutdown 1x and 1.5x mode operation with automatic switchover Very low dropout: 200mV typ Very low 31µA current (LSB) 2MHz switching frequency reduces external components Power-saving shutdown mode of 1µA Built-in over-temperature protection Available in Lead Free, RoHS compliant package: Small 16-pin 3x3 QFN 16 14 LED 6 LED 7 SDA SCL 1 2 3 4 LED 3 LED 1 GND C2+ C2- The SP7680 is a complete backlight display solution that is designed to independently control LEDs for 2 main and auxiliary displays as well as the keypad. A two line I C serial interface allows a simple way to adjust each current individually in order to provide ultimate flexibility in driving LEDs. The data is loaded into internal registers upon power up and stored while in shutdown. When the chip is enabled the stored values set the LED currents. Extra low 33µA LSB allows trickle current through the LEDs for nonreflecting LCD displays. The SP7680 automatically detects 1x or 1.5x operation for optimal efficiency. TYPICAL APPLICATION CIRCUIT MAIN SUB AUX VOUT VIN C1- C1+ DESCRIPTION VIN 2.2µF SDA SCL VIN SP7680 C1 C2 VOUT 1µF 0.47µF 0.47µF June 21-07 revH SP7680: Complete Backlight Solution  2007 Sipex C...