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MAX9550, MAX9551, MAX9552 High-Current VCOM Drive Buffers for TFT LCDs


source: | post time:2010-01-17

High Current and Fast Settling Time to Quickly Restore VCOM Voltage for TFT LCDs
 
Status
Active: In Production.

Description
FULL DATA SHEET (PDF, 508kB)
Download this datasheet in PDF formatDownload   
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.

An evaluation kit is available:  MAX9552EVKIT 

Key Features   Applications/Uses
  • Operates Up to 20V
  • 800mA Peak Output Current
  • Settles to Within 0.1% of VOUT in Less than 2µs
  • Excellent Load Regulation
  • Thermal-Shutdown Protection
  • Short-Circuit Protection to Both Rails
  • Soft-Start to Reduce Inrush Current
 

 

Key Specifications:  Operational Amplifiers
Part Number Amps. Rail to Rail AVCL VSUPPLY (Total)
(V)
VSUPPLY (Total)
(V)
ICC per Amp.
(µA)
ICC per Amp.
(µA)
VOS
(µV)
CMRR @DC
(dB)
PSRR @DC
(dB)
Input IBIAS
(nA)
Low Pwr. Shutdn Package/Pins Price
min min max typ max max typ typ max See Notes
MAX9550  1 Output Only 1 7 20 2000 4000 10000 96 96 1000 No
µMAX-EP/8
TSOT/5
$0.48 @1k
MAX9551  2
µMAX-EP/8
$0.39 @1k
MAX9552  4
TSSOP-EP/14
$0.65 @1k
See All Operational Amplifiers (146)

Key Specifications:  VCOM Amplifiers and Panel Repair
Part Number Channels Peak Current
(mA)
Rail to Rail Features Programmable VSUPPLY
(V)
Oper. Temp.
(°C)
Package/Pins Smallest Available Pckg.
(mm2)
Price
max w/pins See Notes
MAX9550  1 800 Output Only Thermal Shutdown No 7 to 20 -40 to +85
µMAX-EP/8
TSOT/5
8.3 $0.48 @1k
MAX9551  2
µMAX-EP/8
15.3 $0.39 @1k
MAX9552  4
TSSOP-EP/14
33.2 $0.65 @1k
See All VCOM Amplifiers and Panel Repair (7)

Key Specifications:  Video/Wideband Amplifiers
Part Number Amps. Single Supply ISUPPLY
(mA)
IOUT
(mA)
VSUPPLY
(V)
VSUPPLY
(V)
Oper. Temp.
(°C)
Package/Pins Price
typ min min max See Notes
MAX9550  1 Yes 2 55 7 20 -40 to +85
µMAX-EP/8
TSOT/5
$0.48 @1k
MAX9551  2
µMAX-EP/8
$0.39 @1k
MAX9552  4
TSSOP-EP/14
$0.65 @1k
See All Video/Wideband Amplifiers (91)

Diagram
MAX9550, MAX9551, MAX9552: Typical Operating Circuit
Typical Operating Circuit

source:ShenZhen henlito electronic co.,ltd.

web:www.henlito.com


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