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微源半导体 LP3352QVF QFN-16 用于背光的6通道LED驱动器
General Description
LP3352QVF is a cost-effective LED driver optimized for middle size TFT-LCD backlight application. LP3352 offers a high-efficiency current mode boost converter with integrated 2.5A/40V power MOS. The six integrated current sink can be adjusted through an external resistor.An unused LED channel can be disabled by connecting the channel to ground.
In addition, the LP3352 offers an external pulse-width-modulation (CTRL) method for LED dimming control. The LED current is turned on and off in response to the duty cycle and frequency applied at the CTRL pin.
The LP3352 features several protection functions including output over voltage protection (OVP), under-voltage lockout (UVLO), over temperature protection (OTP) and LED string open and short detection. The LP3352QVF is available in a space saving QFN-16 (0.5mm pitch) package.
Features
◆ Input Supply Range : 2.5V ~ 5.5V
◆ Wide VIN Range: 2.7V to 24V
◆ Current-Mode Boost Converter
◆ Integrated 2.5A/40V boost power MOS
◆ Built-in LED soft-start current control
◆ Six programmable current sinks Current up to 30mA per channel
PWM dimming from 100Hz to 30kHz
2.5% current matching
3% current accuracy
◆ LED string open/short detection
◆ Over Voltage Protection
◆ Over Temperature Protection
◆ Under Voltage Lockout
◆ QFN-16 (3mm×3mm) Package
◆ RoHS Compliant and Pb-Free
Applications
◆ Notebook LED Backlight
◆ Monitor LED Backlight
◆ Tablet LED Backlight
LP3352QVF产品规格书
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