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LM2796 - Dual-Display White LED Driver

General Description

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.

Key Features

  • (keypad LEDs, for example). Brightness of the two groups can be adjusted independently with pulsewidth 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 highefficiency 3/2x-gain charge pump. The LM2796 is available in National’s chip-scale 18-bump micro SMD package. Features n Drives up to 7 LEDs with up to 20mA each n LEDs controlled in 2 Distinct Groups, for Backlighting 2 Displays (main LCD and sub-LC.

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📁 Similar Datasheet

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LM2796 Dual-Display White LED Driver Texas Instruments
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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LM2796 Dual-Display White LED Driver with 3/2x Switched Capacitor Boost February 2004 LM2796 Dual-Display White LED Driver with 3/2x Switched Capacitor Boost General Description 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).