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TPS542025

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4.5V to 30V input, 2A, 500kHz synchronous buck converter

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Data sheet

TPS542025

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Data sheet Order now

Product details

Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 30 Vin (min) (V) 4.5 Vout (max) (V) 5 Vout (min) (V) 5 Features Enable, Light-load efficiency, Prebias startup, Soft-start fixed, Spread Spectrum, Synchronous rectification, UVLO adjustable EMI features Spread Spectrum Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000045 Duty cycle (max) (%) 100 Sector Robotics
Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 30 Vin (min) (V) 4.5 Vout (max) (V) 5 Vout (min) (V) 5 Features Enable, Light-load efficiency, Prebias startup, Soft-start fixed, Spread Spectrum, Synchronous rectification, UVLO adjustable EMI features Spread Spectrum Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000045 Duty cycle (max) (%) 100 Sector Robotics
SOT-23-THN (DDC) 6 8.12 mm² 2.9 x 2.8
  • Configured for a wide range of applications
    • Input voltage range: 4.5V to 30V
    • Selectable adjustable output (TPS542021), fixed 5V output (TPS542025)
    • Continuous output current: up to 2A
    • Reference voltage: 0.6V ± 1.5% (25°C)
    • Supports low drop out mode
  • High efficiency
    • Integrated MOSFETs: 100mΩ and 60mΩ
    • Low 2µA shutdown, 26µA quiescent current
    • Pulse frequency modulation (PFM) for high light load efficiency
  • Ease of use
    • Peak current mode control with internal loop compensation
    • Fixed switching frequency: 500kHz
    • Internal soft start: 5ms
    • Frequency spread spectrum to reduce EMI
    • Overcurrent protection for both MOSFETs with hiccup mode protection
    • Non-latched protection for over temperature protection (OTP), overcurrent protection (OCP), overvoltage protection (OVP), and undervoltage lockout (UVLO)
    • P2P, B2B with TPS54202
    • SOT-23 (6), SOT-563 package
  • Configured for a wide range of applications
    • Input voltage range: 4.5V to 30V
    • Selectable adjustable output (TPS542021), fixed 5V output (TPS542025)
    • Continuous output current: up to 2A
    • Reference voltage: 0.6V ± 1.5% (25°C)
    • Supports low drop out mode
  • High efficiency
    • Integrated MOSFETs: 100mΩ and 60mΩ
    • Low 2µA shutdown, 26µA quiescent current
    • Pulse frequency modulation (PFM) for high light load efficiency
  • Ease of use
    • Peak current mode control with internal loop compensation
    • Fixed switching frequency: 500kHz
    • Internal soft start: 5ms
    • Frequency spread spectrum to reduce EMI
    • Overcurrent protection for both MOSFETs with hiccup mode protection
    • Non-latched protection for over temperature protection (OTP), overcurrent protection (OCP), overvoltage protection (OVP), and undervoltage lockout (UVLO)
    • P2P, B2B with TPS54202
    • SOT-23 (6), SOT-563 package

The TPS54202x is a 4.5V to 30V input voltage range, 2A output, synchronous buck converter. The device includes two integrated switching FETs, internal loop compensation and 5ms internal soft start to reduce component count.

By integrating the MOSFETs, the TPS54202x achieves the high power density and offers a small footprint on the PCB. TPS542025 has fixed 5V output, which saves BOM by further reducing FB resistors. TPS542021 has adjustable output by a different FB resistor configuration.

The TPS54202x operates in pulse frequency modulation for higher light load efficiency and reduces the power loss. The frequency spread spectrum operation is introduced for Electromagnetic Interference (EMI) reduction.

Cycle-by-cycle current limit in both high-side MOSFET protects the converter in an overload condition and is enhanced by a low-side MOSFET freewheeling current limit which prevents current runaway. Hiccup mode protection is triggered if the overcurrent condition has persisted for longer than the present time.

The TPS54202x is a 4.5V to 30V input voltage range, 2A output, synchronous buck converter. The device includes two integrated switching FETs, internal loop compensation and 5ms internal soft start to reduce component count.

By integrating the MOSFETs, the TPS54202x achieves the high power density and offers a small footprint on the PCB. TPS542025 has fixed 5V output, which saves BOM by further reducing FB resistors. TPS542021 has adjustable output by a different FB resistor configuration.

The TPS54202x operates in pulse frequency modulation for higher light load efficiency and reduces the power loss. The frequency spread spectrum operation is introduced for Electromagnetic Interference (EMI) reduction.

Cycle-by-cycle current limit in both high-side MOSFET protects the converter in an overload condition and is enhanced by a low-side MOSFET freewheeling current limit which prevents current runaway. Hiccup mode protection is triggered if the overcurrent condition has persisted for longer than the present time.
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* Data sheet TPS54202x 4.5V to 30V, 2A, EMI Friendly, Synchronous Step-Down Converter datasheet (Rev. B) PDF | HTML 16 Dec 2025
Certificate TPS542025EVM EU Declaration of Conformity (DoC) 16 Dec 2024

Design & development

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Evaluation board

TPS542021EVM — TPS542021 evaluation module

The TPS542021 evaluation module (EVM) is a simple, easy-to-use, 2A synchronous step-down converter in SOT236 package. The TPS542021EVM is a fully assembled and tested circuit for evaluating the TPS542021 step-down converter. The TPS542021EVM operates from 5V to 30V input, 24V nominal, and provides (...)

User guide: PDF | HTML
Not available on TI.com
Evaluation board

TPS542025EVM — TPS542025 evaluation module

The TPS542025 evaluation module (EVM) is a simple, easy-to-use, 2A synchronous step-down converter in a SOT236 package. The TPS542025EVM is a fully assembled and tested circuit for evaluating the TPS542025 step-down converter. The TPS542025EVM operates from 5V to 30V input, 24V nominal, and (...)
User guide: PDF | HTML
Not available on TI.com
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SOT-23-THN (DDC) 6 Ultra Librarian
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