TPS60402

ACTIVE

60mA Charge Pump Voltage Inverter with Fixed 50kHz Operation

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LM27761 ACTIVE Low-Noise Regulated Inverter with Integrated LDO Inverter with integrated LDO for low noise output

Product details

Rating Catalog Operating temperature range (°C) -40 to 85 Type Charge pump Iout (max) (A) 0.06 Vin (min) (V) 1.6 Vin (max) (V) 5.25 Switching frequency (min) (kHz) 30 Switching frequency (max) (kHz) 80 Features Light Load Efficiency Mode, Synchronous Rectification Vout (min) (V) -5.25 Vout (max) (V) -1.6 Iq (typ) (µA) 275
Rating Catalog Operating temperature range (°C) -40 to 85 Type Charge pump Iout (max) (A) 0.06 Vin (min) (V) 1.6 Vin (max) (V) 5.25 Switching frequency (min) (kHz) 30 Switching frequency (max) (kHz) 80 Features Light Load Efficiency Mode, Synchronous Rectification Vout (min) (V) -5.25 Vout (max) (V) -1.6 Iq (typ) (µA) 275
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • 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) PDF | HTML 10 Nov 2020
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 30 Apr 2024
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
Analog Design Journal Design considerations for a resistive feedback divider in a DC/DC converter 26 Apr 2012
EVM User's 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 (...)

User guide: PDF
Not available on TI.com
Gerber file

TPS6040xVM Gerber Files

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

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TIDA-00167 — Isolated Ultra-Low Power Design for 4 to 20 mA Loop Powered Transmitters

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Package Pins Download
SOT-23 (DBV) 5 View options

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