LP6284-Panel Power

产品型号 输入电压(V) 输出电压(V) 工作频率(Hz) 效率(%) 限流值(mA) 封装 规格书
LP6284 2.5-5.5 Vin-16 640K/ 1.2M 92 2000 TQFN 4X4-24


Multi-Channel DC-DC Converter



General Description

The LP6284 includes a high-performance boost regulator, a low dropout linear regulator (LDO), a gate pulse modulator (GPM), a voltage detector, a VCOM buffer (unity-gain OPA), and a VGH charge pump controller for active matrix TFT LCDs. The converter is a high switching frequency (640kHz or 1.2MHz) current-mode regulator with an integrated 16V N-Channel 0.2Ω MOSFET that allows the use of ultra-small inductors and ceramic capacitors. It provides fast transient response to pulsed loading while achieving efficiency over 90%. The low-dropout (LDO) linear regulator can supply up to 350mA current while input voltage is 3.3V. It is suitable for the supply voltage of the timing controller. The Unity-Gain buffer can drive the LCD VCOM voltage that features high short-circuit current, fast slew rate and rail-to-rail inputs and outputs. The VGH charge pump controller provides regulated TFT Gate-On voltage. The regulation of the positive charge pump is generated by the internal comparator that senses the output voltage and compares it with an internal reference. Other features include thermal shutdown protection and under-voltage lockout (UVLO). The LP6284 is available in a space saving QFN-24 (0.5mm pitch) package.
 


Applications
 

 TFT LCD TV
 TFT LCD Monitor
 

Features
 

 Wide VIN Range: 2.5V to 5.5V
 640kHz/1.2MHz Current-Mode Boost Regulator
Fast Transient Response to Pulsed Load
Adjustable Output Voltage (±1%)
Built-In 16V, 2A, 0.2Ω N-MOSFET
High Efficiency Up to 90%
Programmable Soft-Start
 Low Dropout Voltage Linear Regulator
Maximum Output Current : 350mA
Adjustable Output Voltage : 1.5V to VIN −
0.5V( ±1.5%)
GPM Controller with Adjustable
Power-On Sequence Control
Power-On Delay and Falling Time
Flicker Compensator
Low Voltage Detector
Programmable Detecting Voltage (±2%)
Programmable Delay Time
Unity-Gain Operation Amplifier for VCOM Buffer
Charge Pump for VGH regulation
Under-Voltage Protection
Over-Temperature Protection
Available in QFN-24 (4×4mm)
RoHS Compliant and Halogen Free
Pb-Free Package

 
 

Marking Information
 

Please see specification. 
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