The GP5213 is a High Voltage monolithic PWM high-efficiency LED drive
control IC. It allows efficient operation of High Brightness (HB) LEDs
from voltage sources ranging from 8VDC up to 550VDC. The GP5213 controls
an external NMOSFET at fixed switching frequency up to 500kHz. The operation
switching frequency can be programmed by a single resistor. The LED
string is driven at constant current to provide constant light output
and enhanced reliability.
The LED drive current can be programmed by a single resistor at CS pin
to set the drive current from a few milliamps up to a preset high drive
current.
Linear dimming can be achieved through input a 0V to 250mV DC voltage
to ADJ pin.
By grounding the PWM pin the chip can be disabled and chip draw less
than 1mA current.
The GP5213 requires very few external components and its high efficiency makes this device has advantage to drive constant current for MR-16, AR111, E-27, PAR-38 space limited LED lights as well as the LED power module for LCD TV backlit driver and large LED display screen. The chip is packaged with a compact SO8 package. Unit price of $0.37 in 1,000ea quantity.