TPS561201

ACTIVE

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

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Product details

Parameters

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 Iq (Typ) (uA) 400 Switching frequency (Min) (kHz) 580 Switching frequency (Max) (kHz) 580 Features Enable, Light Load Efficiency, Synchronous Rectification, Soft Start Fixed Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

SOT-23-THN (DDC) 6 SOT-23-THN (DDC) 6 5 mm² 2.9 x 1.6 open-in-new Find other Buck converters (integrated switch)

Features

  • 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)
  • Startup 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

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Description

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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Same functionality and pinout but is not an equivalent 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).

Technical documentation

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
49
Description
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 (...)
Features
  • Supports 5 V, 12 V and 15 V power bus
  • Synchronous Buck Converter with integrated FETs
  • DCAP2 Control
  • Internal Soft Start
  • 1A Output Current

Design tools & simulation

SIMULATION MODELS Download
SLVMC27.ZIP (321 KB) - PSpice Model
SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

Reference designs

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TIDA-01449 — 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 (...)
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5-V, 1-A, Cost-Effective, Single-Layer TO-247 LDO Replacement Reference Design With 93% Efficiency
TIDA-01448 — 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 (...)
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REFERENCE DESIGNS Download
3.3-V, 1-A, Cost-Effective, Single-Layer TO-247 LDO Replacement Reference Design With 91% Efficiency
TIDA-01447 — 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 (...)
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CAD/CAE symbols

Package Pins Download
SOT-23-THIN (DDC) 6 View options

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