TPS92510
www.ti.com SLUSAE4A – JANUARY 2012 – REVISED AUGUST 2012 1.5-A Constant-Current Buck Converter for High-Brightness LEDs
with Integrated LED Thermal Foldback
Check for Samples: TPS92510 FEATURES 1 2 DESCRIPTION 3.5-V to 60-V Input Voltage Range
Integrated 200-mΩ High-Side MOSFET
200 mV Internal Voltage Reference
В±3% LED Current Accuracy
100 kHz to 2.5 MHz Switching Frequency
Range
Dedicated PWM Dimming Input
LED Thermal Foldback
Adjustable UVLO
Overcurrent Protection
Over-Temperature Protection
MSOP-10 (DGQ) PowerPADв„ў Package The TPS92510 is a 60-V, 1.5-A peak current-mode
step-down converter with an integrated high-side
MOSFET. It is specifically designed for driving highbrightness LEDs with a constant current. The tighttolerance, 200-mV internal reference voltage reduces
power dissipation in the current-sense resistor. A
dedicated pulse width modulation input pin allows
linear control of the light output.
The TPS92510 integrates a thermal foldback feature
that reduces the average output current to ensure
that the sensed LED temperature never exceeds a …
