Product details

Iout (Max) (A) 0.2 Vin (Min) (V) 2.2 Vin (Max) (V) 5.5 Vout (Min) (V) 1.8 Vout (Max) (V) 2.5 Soft start Fixed Features Dynamic Voltage Scaling, EMI Tested, Enable, Light Load Efficiency, Output Discharge, Overcurrent protection Operating temperature range (C) -40 to 85 Iq (Typ) (uA) 0.36 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 1700 Switching frequency (Min) (kHz) 700 Duty cycle (Max) (%) 100 Topology Buck, Synchronous Buck
Iout (Max) (A) 0.2 Vin (Min) (V) 2.2 Vin (Max) (V) 5.5 Vout (Min) (V) 1.8 Vout (Max) (V) 2.5 Soft start Fixed Features Dynamic Voltage Scaling, EMI Tested, Enable, Light Load Efficiency, Output Discharge, Overcurrent protection Operating temperature range (C) -40 to 85 Iq (Typ) (uA) 0.36 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 1700 Switching frequency (Min) (kHz) 700 Duty cycle (Max) (%) 100 Topology Buck, Synchronous Buck
  • 360-nA Typical Quiescent Current
  • Up to 90% Efficiency at 10-µA Output Current
  • Pin-Selectable Output Voltages in 100-mV Steps
  • Integrated Slew Rate Controlled Load Switch
  • Up to 200-mA Output Current
  • Input Voltage Range VIN from 2.2 V to 5.5 V
  • RF Friendly DCS-Control™
  • Low Output Voltage Ripple
  • Automatic Transition to No Ripple 100% Mode
  • Discharge Function on VOUT and LOAD
  • Sub 1.1-mm Profile Solution
  • Total Solution Size < 6.7mm2
  • Small 2.3 mm × 2.9 mm MicroSIP™ Package
  • 360-nA Typical Quiescent Current
  • Up to 90% Efficiency at 10-µA Output Current
  • Pin-Selectable Output Voltages in 100-mV Steps
  • Integrated Slew Rate Controlled Load Switch
  • Up to 200-mA Output Current
  • Input Voltage Range VIN from 2.2 V to 5.5 V
  • RF Friendly DCS-Control™
  • Low Output Voltage Ripple
  • Automatic Transition to No Ripple 100% Mode
  • Discharge Function on VOUT and LOAD
  • Sub 1.1-mm Profile Solution
  • Total Solution Size < 6.7mm2
  • Small 2.3 mm × 2.9 mm MicroSIP™ Package

The TPS82740 is the industry’s first step-down converter module featuring typically 360-nA quiescent current consumption. It is a complete MicroSIPTM DC/DC step-down power solution intended for ultra low-power applications. The module includes the switching regulator, inductor and input/output capacitors. The integration of all required passive components enables a tiny solution size of only 6.7 mm2.

This new DCS-Control™ based device extends the light load efficiency range below 10-µA load currents. It supports output currents up to 200 mA.

The device operates from rechargeable Li-Ion batteries, Li-primary battery chemistries such as Li-SOCl2, Li-MnO2 and two or three cell alkaline batteries. The input voltage range up to 5.5 V also allows operation from an USB port and thin-film solar modules.

The output voltage is user selectable by three voltage select pins (VSEL), within a range from 1.8 V to 2.5 V (TPS82740A) and 2.6 V to 3.3 V (TPS82740B) in 100-mV steps. The TPS82740 features low output voltage ripple and low noise. Once the battery voltage comes close to the output voltage (close to 100% duty cycle), the device enters no ripple 100% mode operation preventing an increase of output voltage ripple. In this case the device stops switching and the output is connected to the input voltage.

The integrated slew rate controlled load switch with a typical ON-resistance of 0.6Ω distributes the selected output voltage to a temporarily used sub-system.

The TPS82740 is available in a small 9-bump 6.7 mm2 MicroSiP™ package.

The TPS82740 is the industry’s first step-down converter module featuring typically 360-nA quiescent current consumption. It is a complete MicroSIPTM DC/DC step-down power solution intended for ultra low-power applications. The module includes the switching regulator, inductor and input/output capacitors. The integration of all required passive components enables a tiny solution size of only 6.7 mm2.

This new DCS-Control™ based device extends the light load efficiency range below 10-µA load currents. It supports output currents up to 200 mA.

The device operates from rechargeable Li-Ion batteries, Li-primary battery chemistries such as Li-SOCl2, Li-MnO2 and two or three cell alkaline batteries. The input voltage range up to 5.5 V also allows operation from an USB port and thin-film solar modules.

The output voltage is user selectable by three voltage select pins (VSEL), within a range from 1.8 V to 2.5 V (TPS82740A) and 2.6 V to 3.3 V (TPS82740B) in 100-mV steps. The TPS82740 features low output voltage ripple and low noise. Once the battery voltage comes close to the output voltage (close to 100% duty cycle), the device enters no ripple 100% mode operation preventing an increase of output voltage ripple. In this case the device stops switching and the output is connected to the input voltage.

The integrated slew rate controlled load switch with a typical ON-resistance of 0.6Ω distributes the selected output voltage to a temporarily used sub-system.

The TPS82740 is available in a small 9-bump 6.7 mm2 MicroSiP™ package.

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Technical documentation

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Type Title Date
* Data sheet TPS82740x 360-nA IQ MicroSIPTM Step Down Converter Module for Low Power Applications datasheet (Rev. A) 11 Jun 2014
Application note A Topical Index of TI Low Power Buck DC/DC Application Notes (Rev. A) 25 Jun 2021
User guide Manufacturing and Rework Design Guide for MicroSiP™ Power Modules (Rev. A) 16 Jun 2021
White paper Benefits of a Resistor-to-Digital Converter in Ultra-Low Power Supplies 14 Oct 2019
Analog design journal Methods of output-voltage adjustment for DC/DC converters 14 Jun 2019
Analog design journal Understanding 100% mode in low-power DC/DC converters 22 Jun 2018
Analog design journal Testing tips for applying external power to supply outputs without an input volt 24 Oct 2016
White paper SiP Power Modules White Paper 26 Jan 2016
Analog design journal Understanding frequency variation in the DCS-Control(TM) topology 30 Oct 2015
Technical article Extend your wearable design’s battery runtime with an ultra-low-power solution 06 Apr 2015
Technical article Tips for making your battery solution more compact 27 Feb 2015
Technical article 3 Keys to Ultra-Low-Power in Wearable Designs 05 Sep 2014
User guide TPS82740xSIPEVM-617 User's Guide 10 Jun 2014
Analog design journal High-efficiency, low-ripple DCS-Control offers seamless PWM/pwr-save transitions 25 Jul 2013
Analog design journal IQ: What it is, what it isn’t, and how to use it 17 Jun 2011

Design & development

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

Evaluation board

TPS82740AEVM-617 — Evaluation Module for TPS82740ASIP Ultra Low Iq, Fully Integrated Step-Down Converter

The TPS82740AEVM-617 is designed to help the user easily evaluate and test the operation and functionality of the Fully Integrated TPS82740A Power Module. The EVM converts a 2.2-V to 5.5-V input voltage to a regulated output voltage that is set between 1.8 V and 2.5 V at up to 200 mA. The (...)

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Simulation model

TPS82740A PSpice Unencrypted Transient Model (Rev. C)

SLVMAB2C.ZIP (127 KB) - PSpice Model
Simulation model

TPS82740A TINA-TI Startup Reference Design (Rev. A)

SLVMAI1A.TSC (122 KB) - TINA-TI Reference Design
Simulation model

TPS82740A TINA-TI Steady State Reference Design (Rev. A)

SLVMAI2A.TSC (128 KB) - TINA-TI Reference Design
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Reference designs

TIDA-010055 — Non-isolated power architecture with diagnostics reference design for protection relay modules

This reference design showcases non-isolated power supply architectures for protection relays with analog input/output and communication modules generated from 5-, 12-, or 24-V DC input. To generate the power supplies the design uses DC/DC converters with an integrated FET, a power module with an (...)
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