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概述
he LP6286HQVF-F is an integrated power supply solution optimized for small to medium size thinfilm transistor (TFT) liquid crystal displays (LCD’s).
The boost converter operates at the frequency of 1.2MHz. The integrated N-channel FET has a typical current limit of 3.5A and can support output voltages up to 18V.
The gate-on and gate-off charge pumps provide regulated TFT-LCD gate-on and gate-off supplies. Both outputs can be adjusted by external resistive voltage-dividers.
The integrated operational amplifier is typically used for LCD VCOM driving; the output can sink or source up to 150mA short-circuit current. This operational amplifier features fast slew rate (25V/us), wide bandwidth (20MHz).
A built-in voltage detector generates a reset signal when the input voltage drops below a specified level. The reset signal is active low, and the detecting level is decided by an external resistor divider.
应用
◆ TFT LCD for Notebooks
◆ TFT LCD for Monitors
◆ TFT LCD for TV
数据参数
数据参数
输入电压 (V)
2.8-14
输出电压(V)
6.0-18
工作频率(Hz)
1.2M
限流值(mA)
3500
效率 (%)
90
应用
NB/MNT/TV
特点
AVDD, VGH,VGHM, Vcom OP, Reset
封装
TQFN-24 (4*4)
特征
特征
◆ Input Supply Voltage Range
- 2.8V to 14.0V input supply
◆ Current-mode boost regulator
- 1.2MHz switching frequency
- Integrated 24V/3.5A 130mΩ NMOSFET
- Fast transient response to pulsed load
- High efficiency up to 90%
- Adjustable high-accuracy output voltage(±2%)
- Over current protection
- Over voltage protection
◆ VGH positive charge pump controller
◆ VGL negative charge pump controller
◆ Integrated high performance operational amplifier
- ±150mA output short-circuit current
- Adjustable delay time fixed 180ms
- 25V/us fast slew rate
- 10MHz bandwidth
◆ Low-voltage detection circuit
◆ VGH Delay controller
- Adjustable delay time
◆ Over Temperature Protection
◆ RoHS Compliant and 100% Lead(Pb)-Free
◆ Compact Package: QFN4×4-24
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