Dual-Display White LED Driver With 3/2x Switched Capacitor Boost

The LM2796 is a charge-pump based white-LED 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 National's chip-scale 18-bump micro SMD package.
By National Semiconductor Corporation
Part Manufacturer Description Datasheet Samples
LM27966SQX/NOPB Texas Instruments White LED Driver with I2C Compatible Interface 24-WQFN -30 to 85
LM27965SQX-M/NOPB Texas Instruments Dual Display White LED Driver with I2C Compatible Brightness Control 24-WQFN
LM27964SQX-C/NOPB Texas Instruments White LED Driver System with I2C Compatible Brightness Control 24-WQFN
LM2796TL/NOPB Texas Instruments Dual-Display White LED Driver with 3/2x Switched Capacitor Boost 18-DSBGA -30 to 85
LM27966SQ/NOPB Texas Instruments White LED Driver with I2C Compatible Interface 24-WQFN -30 to 85
LM27964SQ-C/NOPB Texas Instruments White LED Driver System with I2C Compatible Brightness Control 24-WQFN -30 to 85
LM2796TLX/NOPB Texas Instruments Dual-Display White LED Driver with 3/2x Switched Capacitor Boost 18-DSBGA -30 to 85
LM27965SQ/NOPB Texas Instruments Dual Display White LED Driver with I2C Compatible Brightness Control 24-WQFN -30 to 85
LM27964SQX-A/NOPB Texas Instruments White LED Driver System with I2C Compatible Brightness Control 24-WQFN
LM27965SQX/NOPB Texas Instruments Dual Display White LED Driver with I2C Compatible Brightness Control 24-WQFN -30 to 85
LM2796 's PackagesLM2796 's pdf datasheet
LM2796TLEV
LM2796TL
LM2796TLX




LM2796 Pinout, Pinouts
LM2796 pinout,Pin out
This is one package pinout of LM2796,If you need more pinouts please download LM2796's pdf datasheet.

LM2796 Application circuits
LM2796 circuits
This is one application circuit of LM2796,If you need more circuits,please download LM2796's pdf datasheet.


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