Holtek Semiconductor HT7963
The HT7963 is a high efficiency boost converter with a fixed oscillator frequency for LED backlighting and LED lighting application. The white LED current is setup using an external current setting resistor, which has a low feed-back voltage of only 0.3V. The DIM input allows a wide range of dimming control for LED backlighting or LED lighting.FEATURES
● Integrated high power boost DC-DC controller● Wide input voltage range from 9V to 30V
● High Voltage Gate-Drive provides lower RDS(ON) and higher efficiencies
● Dimming frequency from 100Hz to 1kHz
● 0.3V LED feedback current sensing voltage with ±3% tolerance
● Device protection features include: Soft-start, OCP, UVLO, OVP, OTP and output short protection – OSP
● LED protection: LED Open/Short Protection
● Package type: 8-pin SOP
APPLICATIONS
● LED Backlighting for LCD TV/Monitor● LED lighting
GENERAL DESCRIPTION
The device offers a full range of protection functions su