Product details

Vin (Min) (V) 1.6 Vin (Max) (V) 5.5 Vout (Min) (V) -5.25 Vout (Max) (V) -1.6 Iout (Max) (A) 0.06 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 30 Switching frequency (Max) (kHz) 80 Iq (Typ) (mA) 0.275 Features Light Load Efficiency Mode, Synchronous Rectification Operating temperature range (C) -40 to 85 Rating Catalog Type Charge Pump
Vin (Min) (V) 1.6 Vin (Max) (V) 5.5 Vout (Min) (V) -5.25 Vout (Max) (V) -1.6 Iout (Max) (A) 0.06 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 30 Switching frequency (Max) (kHz) 80 Iq (Typ) (mA) 0.275 Features Light Load Efficiency Mode, Synchronous Rectification Operating temperature range (C) -40 to 85 Rating Catalog Type Charge Pump
SOT-23 (DBV) 5 5 mm² 1.60 x 2.90 SOT-23 (DBV) 5 5 mm² 2.9 x 1.6
  • Inverts Input Supply Voltage
  • Up to 60-mA Output Current
  • Only Three Small 1-µF Ceramic Capacitors Needed
  • Input Voltage Range From 1.6 V to 5.5 V
  • PowerSave-Mode for Improved Efficiency at Low-Output Currents (TPS60400)
  • Device Quiescent Current Typical 65 µA
  • Integrated Active Schottky-Diode for Start-up Into Load
  • Small 5-Pin SOT-23 Package
  • Evaluation Module Available TPS60400EVM-178
  • Inverts Input Supply Voltage
  • Up to 60-mA Output Current
  • Only Three Small 1-µF Ceramic Capacitors Needed
  • Input Voltage Range From 1.6 V to 5.5 V
  • PowerSave-Mode for Improved Efficiency at Low-Output Currents (TPS60400)
  • Device Quiescent Current Typical 65 µA
  • Integrated Active Schottky-Diode for Start-up Into Load
  • Small 5-Pin SOT-23 Package
  • Evaluation Module Available TPS60400EVM-178

The TPS6040x family of devices generates an unregulated negative output voltage from an input voltage ranging from 1.6 V to 5.5 V. The devices are typically supplied by a preregulated supply rail of 5 V or 3.3 V. Due to its wide input voltage range, two or three NiCd, NiMH, or alkaline battery cells, as well as one Li-Ion cell can also power them.

Only three external 1-µF capacitors are required to build a complete DC-DC charge pump inverter. Assembled in a 5-pin SOT-23 package, the complete converter can be built on a 50-mm2 board area. Additional board area and component count reduction is achieved by replacing the Schottky diode that is typically needed for start-up into load by integrated circuitry.

The TPS6040x can deliver a maximum output current of 60 mA with a typical conversion efficiency of greater than 90% over a wide output current range. Three device options with 20-kHz, 50-kHz, and 250-kHz fixed-frequency operation are available. TPS60400 comes with a variable switching frequency to reduce operating current in applications with a wide load range and enables the design with low-value capacitors.

The TPS6040x family of devices generates an unregulated negative output voltage from an input voltage ranging from 1.6 V to 5.5 V. The devices are typically supplied by a preregulated supply rail of 5 V or 3.3 V. Due to its wide input voltage range, two or three NiCd, NiMH, or alkaline battery cells, as well as one Li-Ion cell can also power them.

Only three external 1-µF capacitors are required to build a complete DC-DC charge pump inverter. Assembled in a 5-pin SOT-23 package, the complete converter can be built on a 50-mm2 board area. Additional board area and component count reduction is achieved by replacing the Schottky diode that is typically needed for start-up into load by integrated circuitry.

The TPS6040x can deliver a maximum output current of 60 mA with a typical conversion efficiency of greater than 90% over a wide output current range. Three device options with 20-kHz, 50-kHz, and 250-kHz fixed-frequency operation are available. TPS60400 comes with a variable switching frequency to reduce operating current in applications with a wide load range and enables the design with low-value capacitors.

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Technical documentation

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Type Title Date
* Data sheet TPS6040x Unregulated 60-mA Charge Pump Voltage Inverter datasheet (Rev. C) 10 Nov 2020
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 11 Dec 2018
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note Extending the Soft Start Time Without a Soft Start Pin (Rev. B) 15 Jun 2017
Technical article 2-wire 4-20mA sensor transmitters: Designing Input Isolated 2-Wire Sensor Transmitters (Part 5) 10 Mar 2015
Technical article Painting a picture for powering high-performance FPGAs 05 Sep 2013
Technical article Analog Applications Spotlight: Mark Pieper 06 Jun 2013
Technical article How to choose an LDO or switching regulator 08 May 2013
Analog design journal Design considerations for a resistive feedback divider in a DC/DC converter 26 Apr 2012
User guide TPS60400EVM-178 for Evaluating TPS6040x Charge Pump Devices 07 Aug 2001

Design & development

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

Evaluation board

TPS60400EVM-178 — evaluation module for charge pump inverter (bare PCB)

Need for use: The EVM does not contain any components. The pcb therefore first has to be populated with the appropriate components. A description of different applications that can be tested using the EVM can be found in the TPS60400EVM users guide. Samples of the TPS6040x family can be (...)

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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 (...)
Gerber file

TPS6040xVM Gerber Files

SLVC142.ZIP (261 KB)
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TIDA-00459 — Highly Efficient Power & Data Transmission for Isolated Low Power Applications Reference Design

TIDA-00459 provides a turnkey solution for the design and evaluation of sensor transmitters and other applications requiring  isolated data transmission and isolated power conversion. The design is based on the LaunchPadTM form factor and showcases a unique power saving methode for (...)
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TIDA-00167 — Isolated Ultra-Low Power Design for 4 to 20 mA Loop Powered Transmitters

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SOT-23 (DBV) 5 View options

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