4.2-V to 18-V, 2-A, synchronous buck converter with 1% accuracy, PG/SS and PFM/forced-PWM in SOT583


Product details


Vin (Min) (V) 4.2 Vin (Max) (V) 18 Vout (Min) (V) 0.6 Vout (Max) (V) 7 Iout (Max) (A) 2 Iq (Typ) (uA) 120 Switching frequency (Min) (kHz) 550 Switching frequency (Max) (kHz) 650 Features Enable, Forced PWM, Light Load Efficiency, Power Good, Soft Start Adjustable, UVLO 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-5X3 (DRL) 8 open-in-new Find other Buck converters (integrated switch)


  • Input voltage: 4.2 V to 18 V
  • Output voltage: 0.6 V to 7 V
    • Up to 2-A continuous output current
    • Minimum switching on time: 45 ns
    • Maximum duty cycle: 98%
  • High efficiency
    • Integrated 66-mΩ and 33-mΩ MOSFETs
    • Quiescent current 120-µA typical
  • Highly flexible and easy to use
    • Selectable Eco-mode or FCCM operation
    • Selectable power good indicator or external soft start
    • Precise enable input
  • High accuracy
    • Reference voltage accuracy: ±1% (25°C)
    • Switching frequency tolerance: ±8.5%
  • Small solution size
    • Internal compensation for ease of use
    • SOT583 package
    • Minimum external components
  • Cycle-by-cycle current limit for both high-side and low-side MOSFETs
  • Non-latched OVP, UVP, UVLO, and TSD protections
  • Create a custom design using TPS562211 with the WEBENCH® Power Designer
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The TPS562211 is a cost effective and highly flexible synchronous buck converter that provides selectable Eco-mode operation or FCCM (Force Continuous Conduction Mode) operation. A selectable Power-Good indicator or external soft start is also configurable through the MODE pin. Power sequencing is possible by correctly configuring Enable, Power-Good indicator, or external soft start. A wide input voltage range of 4.2 V to 18 V supports a wide variety of common input rails like 12 V and 15 V. It supports up to 2-A continuous output current at output voltages between 0.6 V and 7 V.

The device provides fast transient response with true fixed switching frequency through the use of the Advanced Emulated Current Mode (AECM) control topology. With internal smart loop bandwidth control, the device provides fast transient response over a wide output voltage range without the need for external compensation.

Cycle-by-cycle current limit on the high-side peak current protects the device in overload situations and is enhanced by a low-side valley current limit, which prevents current runaway. Hiccup mode would be triggered under overvoltage protection (OVP), undervoltage protection (UVP), UVLO protection, and thermal shutdown.

The device is available in 1.6-mm × 2.1-mm SOT583 package.

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Technical documentation

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Type Title Date
* Data sheet TPS562211 4.2-V to 18-V Input, 2-A Synchronous Buck Converter in SOT583 Package datasheet (Rev. A) Aug. 20, 2021
User guide TPS562211 Step-Down Converter Evaluation Module User's Guide (Rev. A) Apr. 26, 2021
White paper Achieve fast load-transient response & low EMI with AECM DC/DC control topology Feb. 15, 2021
Certificate TPS562211EVM EU Declaration of Conformity (DoC) Jul. 29, 2020
Technical article Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019

Design & development

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Hardware development

document-generic User guide
TPS562211 is a simple, easy-to-use, 2-A synchronous step-down converter with Eco-mode and FCCM selectable in SOT583 package. TPS562211EVM is a fully assembled and tested circuit for evaluating the TPS562211 step-Down Converter. TPS562211EVM operates from 4.2V to 18V input (12V nominal) and provides (...)
  • AECM control for fast transient response and fixed-frequency
  • Mode pin for Eco-mode and FCCM selection
  • Supports all ceramic output capacitors
  • Good output accuracy
  • SOT583 package

Design tools & simulation

SLUM791.ZIP (325 KB) - PSpice Model
SLUM792.ZIP (334 KB) - PSpice Model
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 (...)
  • 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
  • (...)

CAD/CAE symbols

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SOT-5X3 (DRL) 8 View options

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