eup2644 Eutech Microelectronics Inc, eup2644 Datasheet

eup2644

Manufacturer Part Number

eup2644

Description

Tft Lcd Dc-dc Converter With Integrated Ldo, Op-amp And Gpm Switch

Manufacturer

Eutech Microelectronics Inc

Datasheet

1.EUP2644.pdf (1 pages)

Current page: 1 of 1
Download datasheet (101Kb)

DESCRIPTION

The EUP2644 generates power supply rails for thin-film

transistor (TFT) liquid-crystal display (LCD) panels in

monitors and notebooks operation from 3V to 5.5V input

supply. The device integrates a step-up converter, a high

speed V

regulator, and a Gate Pulse Modulator (GPM).

The external compensated step up converter features an

internal power MOSFET and high frequency operation

allowing the use of small inductors and capacitors. The step

up converter uses fixed-frequency, current mode control

architecture which provides fast load-transient response and

easy compensation. A 3.3A peak current limit for the

internal switch protects power supply fault condition.

The GPM provides a modulated voltage to the gate driver

circuitry of a TFT LCD display. It allows shaping of the

gate high voltage to improve image quality. It also can

delay the gate high voltage while power on. Both the

power-on delay time and the falling time of the gate high

voltage are programmable by external resistor and

capacitor.

The high speed V

current (±100mA), 20MHz bandwidth, fast slew rate

70V/µs, and rail-to-rail inputs and outputs.

The LDO regulator provides up to 350mA current to the

external digital circuitry.

DS2644 Ver1.0 Aug. 2008

COM

buffer, a 350mA low dropout (LDO) linear

COM

TFT LCD DC-DC Converter with Integrated

butter features continues output

LDO, OP-AMP and GPM Switch

FEATURES

APPLICATIONS

3V to 5.5V Input Supply Range

Current Mode Step Up Converter

- Selectable Frequency (650kHz/1.2MHz)

- Built-In 20V, 3.3A, 0.15Ω N-MOSFET

- High Efficiency Up to 90%

- Programmable Soft-Start

- Fast Transient Response to Pulsed Load

Gate Pulse Modulator Circuit

- Adjustable Falling Time and Delay

- Flicker Compensation

High Speed High Output Current V

- 20MHz BW

- 70V/µS Slew Rate

- 400mA Peak Output Current

350mA LDO Regulator for V

- Adjustable Output Voltage：2.5V, 2.85V, 3.3V

Input Under Voltage Lockout and Thermal Protection

24 pin 4mm

RoHS Compliant and 100% Lead (Pb)-Free

LCD Monitors

Notebook Display

4mm TQFN Package

LOGIC

EUP2644

COM

Buffer

Related parts for eup2644

Related keywords

eup2644 datasheet
eup2644 data sheet
eup2644 pdf datasheet
eup2644 component
eup2644 part
eup2644 distributor
eup2644 RoHS
eup2644 datasheet download