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TPS51211
  • TPS51211

TPS51211

ACTIVE

4.5-V to 28-V, synchronous buck controller for notebook power

Texas Instruments TPS51211 Product Info

1 April 2026 2

Parameters

Rating

Catalog

Topology

Buck

Iout (max) (A)

18

Vin (max) (V)

28

Vin (min) (V)

3

Vout (max) (V)

2.6

Vout (min) (V)

0.7

Control mode

D-CAP

Features

Enable, Light-load efficiency, Power good, Synchronous rectification

Duty cycle (max) (%)

90

Iq (typ) (A)

0.0003

Number of phases

1

Operating temperature range (°C)

-40 to 85

Package

WSON (DSC)-10-9 mm² 3 x 3

Features

  • Wide Input Voltage Range: 3 V to 28 V
  • Output Voltage Range: 0.7 V to 2.6 V
  • Wide Output Load Range: 0 to 20 A+
  • Built-In 0.5% 0.7 V Reference
  • 290-kHz, Adaptive On-Time D-CAP™ MODE Control
  • 4700 ppm/°C RDS(on) Current Sensing
  • Internal 1-ms Voltage Servo Soft-Start
  • Pre-Charged Start-Up Capability
  • Built-In Output Discharge
  • Power Good Output
  • Integrated Boost Switch
  • Built-In OVP/UVP/OCP
  • Thermal Shutdown (Non-latch)
  • SON-10 (DSC) Package
  • Wide Input Voltage Range: 3 V to 28 V
  • Output Voltage Range: 0.7 V to 2.6 V
  • Wide Output Load Range: 0 to 20 A+
  • Built-In 0.5% 0.7 V Reference
  • 290-kHz, Adaptive On-Time D-CAP™ MODE Control
  • 4700 ppm/°C RDS(on) Current Sensing
  • Internal 1-ms Voltage Servo Soft-Start
  • Pre-Charged Start-Up Capability
  • Built-In Output Discharge
  • Power Good Output
  • Integrated Boost Switch
  • Built-In OVP/UVP/OCP
  • Thermal Shutdown (Non-latch)
  • SON-10 (DSC) Package

Description

The TPS51211 is a small-sized single buck controller with adaptive on-time D-CAP™ Mode. The device is suitable for low output voltage, high current, PC system power rail and similar point-of-load (POL) power supply in digital consumer products. A small package with minimal pin-count saves space on the PCB, while a dedicated EN pin and pre-set frequency minimize design effort required for new designs. The skip-mode at light load condition, strong gate drivers and low-side FET RDS(on) current sensing supports low-loss and high efficiency, over a broad load range. The conversion input voltage which is the high-side FET drain voltage ranges from 3 V to 28 V and the output voltage ranges from 0.7 V to 2.6 V. The device requires an external 5-V supply. The TPS51211 is available in a 10-pin SON package specified from –40°C to 85°C.

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