HM9802
Features n Operation Voltage DC 12V~80V. n 0.1V current sense voltage reference. n Directly drive 1~18 Series 1W/3W LED. n Excellent line and load regulation. n Internal Optimize Power HV-MOSFET. n Built in Thermal Shutdown Function. n Built in Current Limiting Function. n Built in Soft-Start Circuit. n Available in TO263-5L package. n Up to 98% efficiency.
General Description
The HM9802 is a monolithic high voltage switching regulator with PFM that is specifically designed to operate from a 12V~80V DC power supply.
The HM9802 is a high efficiency LED driver switching regulator. The LED string is driven at DC constant current rather than constant voltage, thus providing constant light output and enhanced reliability.
Applications n LED Lighting & LED LAMP n General purpose LED lighting
Figure1. Package Type of HM9802
Rev 1.1
Shenzhen H&M Semiconductor Co.Ltd http：//.hmsemi.
80V 1A High Efficiency...
