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MAX9550EZKT

Description
High-Current VCOM Drive Buffers for TFT LCDs
File Size809KB,12 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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MAX9550EZKT Overview

High-Current VCOM Drive Buffers for TFT LCDs

19-3858; Rev 1; 2/06
High-Current VCOM Drive Buffers
for TFT LCDs
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.
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
Features
MAX9550/MAX9551/MAX9552
Ordering Information
PART
MAX9550EZK+T
MAX9550EUA+*
MAX9551EUA+*
MAX9552EUD+*
AMPS PIN-PACKAGE
1
1
2
4
5 Thin SOT23-5
8 µMAX-EP**
8 µMAX-EP**
14 TSSOP-EP**
PKG
CODE
Z5-1
U8E-2
U8E-2
U14E-3
TOP
MARK
ADSG
AABA
Applications
TFT-LCD Panels
Instrument Control Voltage Sources
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.
*Future
product—contact factory for availability.
**EP
= Exposed paddle.
Typical Operating Circuit
16V
SUPPLY
V
DD
MAX9550
V
REF
IN+
OUT
IN-
GND
V
OUT
TFT-LCD
CAPACITANCE
TFT LCD
µMAX is a registered trademark of Maxim Integrated Products, Inc.
________________________________________________________________
Maxim Integrated Products
1
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.

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