80V 1A High Efficiency Buck PFM LED Constant Current Driver
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 curr...