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概述
The LP6262 is a programmable multi-functional power solution with integrated gamma buffers, VCOM1 buffer for TFT-LCD.
It contains one boost converter controller (AVDD), one ISO MOSFET controller for AVDD power on sequence, one buck converter (VBK), one boost converter/positive charge pump regulator (VGH) with the temperature compensation, one inverting converter/negative charge pump regulator (VGL) with the temperature compensation, one negative regulators (VSS1), 14-CH gamma buffers, 1-CH VCOM1 buffer, 1-CH VCOM2 DAC.
All channel output level and sequence can be programmable by I2C interface and integrated Multiple-Time Programmable (MTP) non-volatile memory.
With its high current capabilities, the LP6262 is ideal for large screen LCD TV/MNT panel application with widely supply voltage range and also integrated complete protection functions including, OVP, UVP, OCP and OTP.
The LP6262 available in a QFN6.5×4.5-46 pin package.
应用
◆ TFT LCD Monitor Pane
◆ TFT LCD TV Panell
数据参数
数据参数
输入电压 (V)
4.3-6/8.6-14.7
输出电压(V)
11-19.8
工作频率(Hz)
500K/750K/1.25M
限流值(mA)
5000
效率 (%)
92
应用
MNT/TV
特点
AVDD, VGH,VGL, Buck (2A), 14+1 P-Gamma, HAVDD
封装
TQFN-46 (4.5*6.5)
特征
特征
◆ Input Supply Range
TV MODE: 8.6V to 14.7V; MNT MODE: 4.3V to 6.0V
◆ AVDD Async-Boost Converter:
TV MODE: 13.0V to 19.8V
MNT MODE: 11.0V to 17.3V
500/750KHz/1250KHz Switching Frequency
5A Switching Current limit
Controller by 0.3V Over-current Protection
◆ Programmable Internal/External VAVDD Isolation PMOS
◆ VBK Sync Buck Converter: 1.8V to 3.35V
500/750KHz/1250KHz Switching Frequency
2.0A Switching Current Limit
◆ HAVDD OP
1 Channel Programmable HAVDD OP
±500mA Peak Current
±200mA Output Current
7-bits DAC resolution
◆ VGH Async-Boost Converter/Charge pump Regulator:
20V to 42V
500/750KHz/1250KHz Switching Frequency
1.5A Switching Current Limit
Temperature Compensation: 20V to 42V
◆ VGL Async-Inverting Converter/Charge pump
Regulator: -3V to -18V
500/750KHz/1250KHz Switching Frequency
1.5A Async Inverting Switching Current Limit
Temperature Compensation: -3V to -18V
◆ VSS1 Negative Regulators: -3V to -16V
◆ 14-CH Gamma Buffers
14 Channels Rail-to-Rail Programmable Gamma
Buffers
10 Bits Resolution for reach channel
◆ 1-CH VCOM1 Buffer
1 Channel Programmable VCOM Buffer
7-Bits Resolution for reach Channel
◆ 1-CH VCOM2 DAC
1 Channel Programmable VCOM DAC
7-Bits Resolution for reach Channel
◆ Invtegrated MTP Non-Volatile Memory
◆ Programmable Sequence Timing
◆ Over-Temperature Protection
◆ IIC Compatible Interface for Register Control
◆ Available in 6.5mmX4.5mm 46-pin QFN Package
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