Home Power management DC/DC switching regulators Step-down (buck) regulators Buck converters (integrated switch)

TPS561201

ACTIVE

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

Product details

Vin (min) (V) 4.5 Vin (max) (V) 17 Vout (min) (V) 0.76 Vout (max) (V) 7 Iout (max) (A) 1 Iq (typ) (mA) 0.4 Switching frequency (min) (kHz) 580 Switching frequency (max) (kHz) 580 Features Enable, Light Load Efficiency, Soft Start Fixed, Synchronous Rectification Operating temperature range (°C) -40 to 125 Rating Catalog Regulated outputs (#) 1 Control mode D-CAP2 Duty cycle (max) (%) 80 Type Converter
Vin (min) (V) 4.5 Vin (max) (V) 17 Vout (min) (V) 0.76 Vout (max) (V) 7 Iout (max) (A) 1 Iq (typ) (mA) 0.4 Switching frequency (min) (kHz) 580 Switching frequency (max) (kHz) 580 Features Enable, Light Load Efficiency, Soft Start Fixed, Synchronous Rectification Operating temperature range (°C) -40 to 125 Rating Catalog Regulated outputs (#) 1 Control mode D-CAP2 Duty cycle (max) (%) 80 Type Converter
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.

Download View video with transcript Video

Similar products you might be interested in

open-in-new Compare alternates
Pin-for-pin with same functionality to the compared device
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).

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
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-01450 — 5-V, 1-A, Cost-Effective, Dual-Layer TO-220 LDO Replacement Reference Design With 92.5% 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-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 (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-010034 — IEEE802.3at Type-1 PoE and 12V adapter input to point of load reference design for IP network camera

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 (...)
Design guide: PDF
Schematic: PDF
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 Download
SOT-23-THN (DDC) 6 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

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. ​​​​​​​​​​​​​​

Videos