PanelPowerManagement

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LP6283-Panel Power
8-14Input Voltage(V):
Vin-18Output Voltage(V):
500/700KSwitch Frequency:
90Efficiency:
4000Switch Current Limit(mA):
AVDD,VGH,VGHM,VGL,Buck,LDO,Vcom OPSpecial Features:
TQFN-48 7x7Package:


Power Management ICs for TV / Monitor



General Description

The LP6283 generates all the supply rails for thin-film transistor (TFT) liquid-crystal display (LCD) panels in TVs and monitors. It includes boost and buck regulators, VGH and VGL charge pump regulators, gate pulse modulator (GPM) , HV LDO, voltage detector (XAO) and VCOM OP. The LP6283 supports input voltage from 8V to 14V and is optimized for LCD TV panel and LCD monitor applications running directly from 12V supply. The boost and buck regulators feature internal power MOSFETs and high-frequency operation, allowing the use of small inductors and capacitors, for in a compact solution. Both switching regulators use fixed-frequency, current-mode control architectures, providing fast load-transient response and easy compensation. The VGH and VGL charge-pump regulators provide supply voltages for the TFT gate driver. Both output voltages can be adjusted with external resistive voltage dividers.
 


Applications
 

 LCD TV/Monitor

 


Features
 

 8V to 14V Supply Input Voltage Range
 Current-Mode Boost Regulator
 20V 3.5A 0.1Ω Internal N-MOSFET
 Programmable Over Current Protection
 Programmable Soft-Start
 Current-Mode Buck Regulator
 16.5V 2A 0.15Ω Internal N-MOSFET
 Over Current Protection
 Adjustable Output Voltage from 1.8V to 3.3V
 Adjustable VGH Charge Pump
 Continuous Output Current 50mA
 Adjustable VGL Charge Pump
 Continuous Output Current 50mA
 Gate Pulse Modulator
 18V to 35V Positive Supply Input
 Power-On/Off Sequence Control
 On-Chip GPM Controller with Adjustable Falling Time and Falling Stop Voltage
 Voltage Detector (XAO)
 Adjustable Detecting Voltage (±1%)
 N-Channel Open-Drain Output
 VCOM OP
 5V to 20V Input Supply Voltage
 ±300mA Output Short-Circuit Current for 1ms
 45V/μs Slew Rate
 20MHz, −3dB Bandwidth
 HV LDO
 5V to 20V Input Supply Voltage
 Adjustable Output Voltage (±0.5%)
 Over Current Protection (60mA)
 Low Dropout Voltage 0.5V (60mA)
 Selectable Frequency (500kHz/750KHz)
 External PMOS Isolation Switch Controlled by Gate Drive Signal
 Over Temperature Protection
 Power On Sequence Control
 TQFN 48 Package
 RoHS Compliant and Halogen Free
 Pb-Free Package
 

Marking Information
 

Please see specification. 
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