Programmable Gamma

LP6299-Programmable Gamma
6.5~18Vo:
25Slew Rate(V/uS):
±350ISC(mA):
60PSRR(dB):
14+1Special Features:
TQFN 5*5-24Package:


Programmable Gamma and VCOM Buffers



General Description

The LP6299 providers a 14-channel programmable gamma buffer and a programmable VCOM buffer for applications in TFT-LCD Panel. Each of the 14-channel gamma buffer is generated using a 10-bit resolution digital-to-analog converter together with a buffer through IIC control. The 14-channel gamma buffer support dynamic switching between two gamma curves by selecting BANK select pin. The LP6299 also features a programmable operational amplifier that drives the LCD VCOM. This unity-gain buffer is capable of rail-to-rail input and output, fast slew rate, and ±150mA output short-circuit current. The VCOM buffer voltage is IIC programmed using 7-bit resolution. The LP6299 includes EEPROM to store two gamma codes and VCOM codes, and control it through IIC interface at the real time. The LP6299 is available in a space saving QFN32 (0.5mm pitch) package.
 


Applications
 

 TFT LCD Panels

 


Features
 

 IIC Interface Control
 Input Supply Voltage Range
2.3V to 3.6V Logic Supply Range
6.5V to 18V Analog Supply Range
 14-Channel Programmable Gamma Buffers
10-Bit, 1024-Step Resolution
±100mA Output Short Circuit
10V/μs Slew Rate
 Two Bank Select
 1-Channel Programmable VCOM Buffer
 7-Bits, 128-Step Current Output
 ±150mA Output Short Circuit
20V/μs Slew Rate
 Integrated EEPROM
 Available in QFN-32 (5 mm×5mm)
 RoHS Compliant and Halogen Free
 Pb-Free Package
 

Marking Information
 

Please see specification. 
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