EUP2796 datasheet(1/9 Pages) EUTECH

部件名	EUP2796

功能描述	Dual-Display White LED Driver with 3/2X Switched Capacitor Boost

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制造商	EUTECH [Eutech Microelectronics Inc]

网页	http://www.eutechmicro.com

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EUP2796

DS2796 Ver1.0 Feb. 2007

1

Dual-Display White LED Driver with 3/2X

Switched Capacitor Boost

DESCRIPTION

The EUP2796 is a charge-pump based white-LED

driver that is ideal for mobile phone display

backlighting. It can drive up to 6 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 (2 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 EUP2796 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 EUP2796 is available in a 16-pin TQFN package.

Typical Application Circuit

FEATURES

Drives up to 6 LEDs with up to 20mA each

LEDs controlled in 2 Distinct Groups, for

Backlighting 2 Displays (main LCD and

sub-LCD)

Excellent Current and Brightness Matching

High Efficiency 3/2X Charge Pump

Extended Li-Ion Input: 2.7V to 5.5V

PWM Brightness Control: 100Hz - 1kHz

3mm × 3mm TQFN-16 Package

RoHS Compliant and 100% Lead(Pb)-Free

APPLICATIONS

Mobile Phone Display Lighting

Mobile Phone Keypad Lighting

PDAs

General LED Lighting

Figure 1.

类似零件编号 - EUP2796

制造商	部件名	数据表	功能描述
Eutech Microelectronics...	EUP2794	444Kb / 13P	White LED Driver with 1X /1.5X High-Efficiency Charge Pump
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