text.skipToContent text.skipToNavigation


1.5A Step-Down Regulator with Integrated MOSFETs


Package | PIN: RGT | 16
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $2.23
10-24 $2.01
25-99 $1.87
100-249 $1.64
250-499 $1.53
500-749 $1.30
750-999 $1.10
1000+ $1.05


  • Continuous 1.5-A Output Current
  • 4.5-V to 18-V Supply Voltage Range
  • 2-V to 18-V Conversion Voltage Range
  • DCAP2 Mode Control Enables Fast Transient Response
  • Low Output Ripple and Support all MLCC Output Capacitor
  • Skip Mode for Light Load Control
  • Highly Efficient Integrated FETs Optimized for Lower Duty Cycle Applications
  • High Efficiency, Less than 10-µA Supply Current at Shutdown
  • Adjustable Soft-Start Time
  • Support Pre-Biased Soft Start
  • 700-kHz Switching Frequency
  • Cycle-By-Cycle Overcurrent Limit
  • Open Drain Power Good Indication
  • Internal Bootstrap Switch
  • Small 3 mm × 3 mm, 16-Pin QFN (RGT) Package

Texas Instruments  TPS53511RGTT

The TPS53511 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The device is suitable for points-of-load (POL) in computing power systems, and provides a cost-effective, low component count, low standby current solution. The main control loop for the TPS53511 uses the D-CAP2™ mode control providing a fast transient response with no external components. The adaptive on-time control supports seamless operation between PWM mode during heavy load conditions and reduced frequency operation during light load conditions for high efficiency.

The TPS53511 includes a proprietary circuit that enables the device to adapt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V supply input, and from 2-V to 18-V input power supply voltage. The device features an adjustable slow start time and a power good function. It also supports pre-biased soft start. The TPS53511 is available in the 16-pin QFN