LM2796TL/NOPB

LED照明驱动器 Dual-Display White LED Driver with 3/2x Switched Capacitor Boost 18-DSBGA -30 to 85

The LM2796 is a charge-pump based white- driver that is ideal for mobile phone display backlighting. It can drive up to 7 LEDs in parallel with up to 20mA through each LED. Regulated internal current sources deliver excellent current and brightness matching in all LEDs. The LED-driver current sources are split into two independently controlled groups. The primary group 4 LEDs can be used to backlight the main phone display. The second group 3 LEDs can be used to backlight a secondary display or to provide other lighting features keypad LEDs, for example. Brightness of the two groups can be adjusted independently with pulse-width modulated PWM digital signals.

The LM2796 works off an extended Li-Ion input voltage range 2.7V to 5.5V. Voltage boost is achieved with a high-efficiency 3/2×-gain charge pump.

The LM2796 is available in ’s chip-scale 18-bump DSBGA package.