Rainbow-electronics MAX9552 Manual do Utilizador descarregar pdf (Página 1)

General Description

The MAX9550/MAX9551/MAX9552 provide a VCOM

source for TFT LCDs. The MAX9550/MAX9551/

MAX9552 source and sink a large current to quickly

restore the VCOM voltage, making it ideal for TFT LCDs.

The output settles to within 0.1% in less than 2µs. In

addition, the MAX9550/MAX9551/MAX9552 directly drive

the capacitive load in the VCOM layer of the TFT LCDs

without the need for a series resistor.

The MAX9550/MAX9551/MAX9552 feature single, dual,

and quad channel VCOM amplifiers, respectively. The

MAX9550/MAX9551/MAX9552 can drive up to 800mA of

peak current per channel and operate up to 20V. The

devices feature soft-start to reduce inrush current, output

short-circuit protection, and thermal shutdown.

The MAX9550 is available in a space-saving 5-pin thin

SOT23 package, and an 8-pin µMAX

package with an

exposed paddle. The MAX9551 is available in an 8-pin

µMAX package with an exposed paddle. The MAX9552

is available in a 14-pin TSSOP package. All devices are

specified over the -40°C to +85°C temperature range.

Applications

TFT-LCD Panels

Instrument Control Voltage Sources

Features

♦ Operates Up To 20V

♦ 800mA Peak Output Current

♦ Settles to Within 0.1% of V

OUT

in Less than 2µs

♦ Excellent Load Regulation

♦ Thermal-Shutdown Protection

♦ Short-Circuit Protection to Both Rails

♦ Soft-Start to Reduce Inrush Current

MAX9550/MAX9551/MAX9552

High-Current VCOM Drive Buffers

for TFT LCDs

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

MAX9550

16V

SUPPLY

IN+

OUT

1µF

TFT-LCD

CAPACITANCE

REF

TFT LCD

IN-

GND

Typical Operating Circuit

19-3858; Rev 2; 9/06

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Pin Configuration appears at end of data sheet.

Note: All devices specified over the -40°C to +85°C operating

temperature range.

+Denotes lead-free package.

*EP = Exposed paddle.

PART

AMPS

PIN-PACKAGE

PKG

CODE

TOP

MARK

MAX9550EZK+T

5 Thin SOT23-5 Z5-1

ADSG

MAX9550EUA+

1 8 µMAX-EP*

U8E-2

AABA

MAX9551EUA+

2 8 µMAX-EP*

U8E-2

—

MAX9552EUD+

14 TSSOP-EP* U14E-3

—

µMAX is a registered trademark of Maxim Integrated Products, Inc.

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MAX9550/MAX9551/MAX9552 1

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Página 1 - MAX9550/MAX9551/MAX9552

General DescriptionThe MAX9550/MAX9551/MAX9552 provide a VCOMsource for TFT LCDs. The MAX9550/MAX9551/MAX9552 source and sink a large current to quick

Página 2

MAX9550/MAX9551/MAX9552High-Current VCOM Drive Buffers for TFT LCDs10 ________________________________________________________________________________

Página 3