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1.5-A Constant Current Buck Converter for HB LEDs


Package | PIN: DGQ | 10
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $1.57
10-24 $1.41
25-99 $1.31
100-249 $1.15
250-499 $1.08
500-749 $0.92
750-999 $0.77
1000+ $0.74


  • 3.5-V to 60-V Input Voltage Range
  • Integrated 200-mΩ High-Side MOSFET
  • 200 mV Internal Voltage Reference
  • ±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) PowerPAD Package

Texas Instruments  TPS92510DGQR

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 high-brightness LEDs with a constant current. The tight-tolerance, 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 specific value, improving the reliability of the overall system. An integrated frequency synchronization feature allows a reduction of unwanted beat- frequencies in multi-string applications and simplifies EMI filtering. The adjustable input voltage UVLO feature accommodates the various deep discharge levels of multiple battery types.

The TPS92510 includes cycle-by-cycle overcurrent protection, and thermal shutdown protection. It is available in a 10-pin MSOP PowerPAD™ package.