SP7680 Datasheet | Sipex Corporation

FEATURES plete 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: 200m V typ Very low 31µA current (LSB) 2MHz switching frequency reduces external ponents Power-saving shutdown mode of 1µA Built-in over-temperature protection Available in Lead Free, Ro HS pliant package: Small 16-pin 3x3 QFN LED 6 LED 7 SDA SCL 1 2 3 4 LED 3 LED 1 GND C2+ C2- The SP7680 is a plete 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 C1- C1+ DESCRIPTION VIN 2.2µF SDA SCL VIN C1 C2 VOUT 1µF 0.47µF 0.47µF June 21-07 rev H SP7680: plete Backlight Solution  2007 Sipex Corporation Page 1 .. ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. VIN, SDA, SCL, LEDx, VOUT -0.3V to 6.0V Power Dissipation ……………………...………… Internally limited Storage Temperature..………..…………………….-65°C to 150°C Junction Temperature (TJ = TA + PD- 33.3°C/W)……………………….. 40°C to +125°C ӨJA (1 square 1oz Cu)……………...…….………….33.3°C/...