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TPS561201

ACTIVE

4.5V to 17V Input, 1A Synchronous Step-Down Voltage Regulator in 6-pin SOT-23

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Data sheet

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NEW TPS561243 ACTIVE 4.2V to 17V input voltage, 1A, 1.2MHz synchronous buck converter in SOT563 with Eco-mode Improved efficiency and higher switching frequency in a smaller package

TPS561201

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 1 Vin (min) (V) 4.5 Vin (max) (V) 17 Switching frequency (min) (kHz) 580 Switching frequency (max) (kHz) 580 Features Enable, Light Load Efficiency, Soft Start Fixed, Synchronous Rectification Control mode D-CAP2 Vout (min) (V) 0.76 Vout (max) (V) 7 Iq (typ) (µA) 400 Duty cycle (max) (%) 80
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 1 Vin (min) (V) 4.5 Vin (max) (V) 17 Switching frequency (min) (kHz) 580 Switching frequency (max) (kHz) 580 Features Enable, Light Load Efficiency, Soft Start Fixed, Synchronous Rectification Control mode D-CAP2 Vout (min) (V) 0.76 Vout (max) (V) 7 Iq (typ) (µA) 400 Duty cycle (max) (%) 80
SOT-23-THN (DDC) 6 8.12 mm² 2.9 x 2.8
  • TPS561201 and TPS561208 1-A converter integrated 140-mΩ and 84-mΩ FETs
  • D-CAP2™ mode control with fast transient response
  • Input voltage range: 4.5 V to 17 V
  • Output voltage range: 0.76 V to 7 V
  • Pulse-skip mode (TPS561201) or continuous current mode (TPS561208)
  • 580-kHz switching frequency
  • Low shutdown current less than 10 µA
  • 2% Feedback voltage accuracy (25°C)
  • Start-up from pre-biased output voltage
  • Cycle-by-cycle overcurrent limit
  • Hiccup-mode overcurrent protection
  • Non-latch UVP and TSD protections
  • Fixed soft start: 1.0 ms
  • Create a custom design using the TPS56120x with the WEBENCH Power Designer
  • TPS561201 and TPS561208 1-A converter integrated 140-mΩ and 84-mΩ FETs
  • D-CAP2™ mode control with fast transient response
  • Input voltage range: 4.5 V to 17 V
  • Output voltage range: 0.76 V to 7 V
  • Pulse-skip mode (TPS561201) or continuous current mode (TPS561208)
  • 580-kHz switching frequency
  • Low shutdown current less than 10 µA
  • 2% Feedback voltage accuracy (25°C)
  • Start-up from pre-biased output voltage
  • Cycle-by-cycle overcurrent limit
  • Hiccup-mode overcurrent protection
  • Non-latch UVP and TSD protections
  • Fixed soft start: 1.0 ms
  • Create a custom design using the TPS56120x with the WEBENCH Power Designer

The TPS561201 and TPS561208 are simple, easy-to-use, 1-A synchronous step-down converters in SOT-23 package.

The devices are optimized to operate with minimum external component counts and also optimized to achieve low standby current.

These switch mode power supply (SMPS) devices employ D-CAP2 mode control, providing a fast transient response and supporting both low equivalent series resistance (ESR) output capacitors such as specialty polymer and ultra-low ESR ceramic capacitors with no external compensation components.

The TPS561201 operates in pulse skip mode, which maintains high efficiency during light load operation. The TPS561201 and TPS561208 are available in a 6-pin 1.6 × 2.9 (mm) SOT (DDC) package and specified from –40°C to 125°C of junction temperature.

The TPS561201 and TPS561208 are simple, easy-to-use, 1-A synchronous step-down converters in SOT-23 package.

The devices are optimized to operate with minimum external component counts and also optimized to achieve low standby current.

These switch mode power supply (SMPS) devices employ D-CAP2 mode control, providing a fast transient response and supporting both low equivalent series resistance (ESR) output capacitors such as specialty polymer and ultra-low ESR ceramic capacitors with no external compensation components.

The TPS561201 operates in pulse skip mode, which maintains high efficiency during light load operation. The TPS561201 and TPS561208 are available in a 6-pin 1.6 × 2.9 (mm) SOT (DDC) package and specified from –40°C to 125°C of junction temperature.
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TPS562201 ACTIVE 4.5 V to 17 V input, 2 A output, synchronous step-down converter in Eco-mode Pin-to-pin compatible higher current product (2 A).

Technical documentation

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Type Title Date
* Data sheet TPS56120x 4.5-V to 17-V Input, 1-A Synchronous Step-Down Voltage Regulator in 6-Pin SOT-23 datasheet (Rev. A) PDF | HTML 24 Sep 2020
Application note How to do Co-Layout Between SOT-563 Package and SOT-236 Package (Rev. A) PDF | HTML 10 Jul 2023
EVM User's guide TPS561201 Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 02 Aug 2021
Application note L1 and L2 EV Charger Electric Vehicle Service Equipment Design Considerations (Rev. B) 09 Jun 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
Technical article Advantages of scalability: from Peter Parker to pin-strapping PDF | HTML 30 Apr 2020
Application note Optimize DC-DC Layout for SOT Package to Improve Thermal and Voltage Spike 27 Sep 2017
Technical article Keeping DC/DC solutions (super) simple for cost-sensitive applications PDF | HTML 18 Oct 2016
Application note D-CAP2 Frequency Response Model, based on frequency domain analysis of Fixed On- 02 Jan 2013

Design & development

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

Evaluation board

TPS561201EVM-896 — TPS561201 1A Synchronous Step-Down SWIFT™ Converter Evaluation Module

The TPS561201 is a single, adaptive on-time, D-CAP2™ mode, synchronous buck converter requiring a very low external component count. The D-CAP2 control circuit is optimized for low-ESR output capacitors such as POSCAP, SP-CAP, or ceramic types and features fast transient response with no (...)
User guide: PDF | HTML
Not available on TI.com
Simulation model

TPS561201 PSpice Transient Model

SLVMC27.ZIP (321 KB) - PSpice Model
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Reference designs

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Design guide: PDF
Schematic: PDF
Reference designs

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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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Schematic: PDF
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Power over Ethernet (PoE) enables power to be delivered over the same ethernet cable as data with no danger of cross-talk, interference, or corruption of the data streams. This reference design showcases end-to-end power tree for an IP network camera powered using PoE or 12-V adapter based on the (...)
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Reference designs

TIDA-01449 — 3.3-V, 1-A, Cost-Effective, Dual-Layer TO-220 LDO Replacement Reference Design With 93% Efficiency

This reference design demonstrates a small solution size, high-efficiency, and low-EMI DC/DC module for LDO replacement in major home appliances. Replacing LDOs with DC/DC modules drastically improves system efficiency, saving on solution size and BOM cost while also eliminating the need for heat (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-01448 — 5-V, 1-A, Cost-Effective, Single-Layer TO-247 LDO Replacement Reference Design With 93% Efficiency

This reference design demonstrates a small solution size, high-efficiency, and low-EMI DC/DC module for LDO replacement in major home appliances. Replacing LDOs with DC/DC modules drastically improves system efficiency, saving on solution size and BOM cost while also eliminating the need for heat (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-01447 — 3.3-V, 1-A, Cost-Effective, Single-Layer TO-247 LDO Replacement Reference Design With 91% Efficiency

This reference design demonstrates a small solution size, high-efficiency, and low-EMI DC/DC module for LDO replacement in major home appliances. Replacing LDOs with DC/DC modules drastically improves system efficiency, saving on solution size and BOM cost while also eliminating the need for heat (...)
Design guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
SOT-23-THN (DDC) 6 Ultra Librarian
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