Programmable Output Voltage Ultra-Low Power Buck Converter with up to 200 mA Output Current


Product details


Vin (Min) (V) 2 Vin (Max) (V) 5.5 Vout (Min) (V) 1.3 Vout (Max) (V) 5 Iout (Max) (A) 0.2 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 2000 Switching frequency (Max) (kHz) 2000 Features Enable Duty cycle (Max) (%) 100 Type Converter Operating temperature range (C) -40 to 105 Rating Catalog open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

VQFN (RGY) 14 12 mm² 3.5 x 3.5 open-in-new Find other Buck converters (integrated switch)


  • Industry&3146;s Highest Efficiency at Low Output
    Currents: > 90% With IOUT = 15 µA
  • Ultra-Low Power Buck Converter
    • TPS62736 Optimized for 50-mA Output Current
    • TPS62737 Optimized for 200-mA Output Current
    • 1.3-V to 5-V Resistor Programmable Output Voltage
    • 2-V to 5.5-V Input Operating Range
    • 380-nA and 375-nA Quiescent Current During Active
      Operation for TPS62736 and TPS62737
    • 10-nA Quiescent Current During Ship Mode Operation
    • 2% Voltage Regulation Accuracy
  • 100% Duty Cycle (Pass Mode)
  • EN1 and EN2 Control
    • Two Power-Off States:Shipmode (Full Power-Off State)
      Standby Mode Includes VIN_OK Indication
  • Input Power-Good Indication (VIN_OK)
    • Push-Pull Driver
    • Resistor Programmable Threshold Level
open-in-new Find other Buck converters (integrated switch)


The TPS6273x family provides a highly integrated ultra low power buck converter solution that is well suited for meeting the special needs of ultra-low power applications such as energy harvesting. The TPS6273x provides the system with an externally programmable regulated supply to preserve the overall efficiency of the power-management stage compared to a linear step-down converter. This regulator is intended to step-down the voltage from an energy storage element such as a battery or super capacitor to supply the rail to low-voltage electronics. The regulated output has been optimized to provide high efficiency across low-output currents (<10 µA) to high currents (200 mA).

The TPS6273x integrates an optimized hysteretic controller for low-power applications. The internal circuitry uses a time-based sampling system to reduce the average quiescent current.

To further assist users in the strict management of their energy budgets, the TPS6273x toggles the input power-good indicator to signal an attached microprocessor when the voltage on the input supply has dropped below a preset critical level. This signal is intended to trigger the reduction of load currents to prevent the system from entering an undervoltage condition. In addition, independent enable signals allow the system to control whether the converter is regulating the output, monitoring only the input voltage, or to shut down in an ultra-low quiescent sleep state.

The input power-good threshold and output regulator levels are programmed independently through external resistors.

All the capabilities of TPS6273x are packed into a small footprint 14-lead 3.5-mm × 3.5-mm QFN package (RGY).

open-in-new Find other Buck converters (integrated switch)

Technical documentation

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide

Efficiency Nanopower Buck (Step Down) Converter Solution

The TPS62737 is a highly integrated Nanopower buck converter solution that is well suited for meeting the special needs of ultra low power applications such as energy harvesting. The TPS62737 evaluation module (EVM) facilitates evaluation of (...)
  • User adjustable output voltage via resistors
  • Input operating range of 2 V – 5.5 V
  • Output voltage and current of 1.8V and 200mA
  • User adjustable output voltage via resistors

Related Term:

Design tools & simulation

SLVC489A.ZIP (49 KB)

Reference designs

I3Mote for Industrial Internet of Things Reference Design
TIDA-01452 This reference design introduces a platform called Intelligent Industrial Internet (I3) Mote. The I3Mote is designed as an open and universal hardware platform targeting process/factory automation and building automation connectivity and sensing deployments. By using the most advanced low-power (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
VQFN (RGY) 14 View options

Ordering & quality

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​