Product details

Vin (Min) (V) 4.2 Vin (Max) (V) 28 Vout (Min) (V) 0.8 Vout (Max) (V) 25 Iout (Max) (A) 3 Iq (Typ) (uA) 600 Switching frequency (Min) (kHz) 570 Switching frequency (Max) (kHz) 570 Features Enable, Light Load Efficiency, Synchronous Rectification, UVLO Adjustable, Power Good, Soft Start Fixed Operating temperature range (C) -40 to 85 Rating Catalog Regulated outputs (#) 1
Vin (Min) (V) 4.2 Vin (Max) (V) 28 Vout (Min) (V) 0.8 Vout (Max) (V) 25 Iout (Max) (A) 3 Iq (Typ) (uA) 600 Switching frequency (Min) (kHz) 570 Switching frequency (Max) (kHz) 570 Features Enable, Light Load Efficiency, Synchronous Rectification, UVLO Adjustable, Power Good, Soft Start Fixed Operating temperature range (C) -40 to 85 Rating Catalog Regulated outputs (#) 1
HSOIC (DDA) 8 19 mm² 4.9 x 3.9 VSON (DRC) 10 9 mm² 3 x 3
  • Two 128mΩ/84mΩ MOSFETs for 3A Continuous
    Output Current
  • Power Good
  • Low 2 µA Shutdown Quiescent Current
  • 0.8 V Internal Voltage Reference with ±1.5%
    Accuracy Over Temperature
  • Fixed-Frequency Current Mode Control
  • Pulse Skipping Boosts Efficiency at Light Loads
  • Overcurrent Protection for Both MOSFETs with
    Hiccup Mode for Severe Fault Conditions
  • Thermal and Overvoltage Transient Protection
  • Available in Easy-to-Use 8-Pin SOIC
    PowerPAD™ and 10-Pin SON
  • Monotonic Start-Up into Pre-biased Outputs
  • Two 128mΩ/84mΩ MOSFETs for 3A Continuous
    Output Current
  • Power Good
  • Low 2 µA Shutdown Quiescent Current
  • 0.8 V Internal Voltage Reference with ±1.5%
    Accuracy Over Temperature
  • Fixed-Frequency Current Mode Control
  • Pulse Skipping Boosts Efficiency at Light Loads
  • Overcurrent Protection for Both MOSFETs with
    Hiccup Mode for Severe Fault Conditions
  • Thermal and Overvoltage Transient Protection
  • Available in Easy-to-Use 8-Pin SOIC
    PowerPAD™ and 10-Pin SON
  • Monotonic Start-Up into Pre-biased Outputs

The TPS54334 is a 28-V, 3-A, low quiescent supply current (IQ), synchronous monolithic buck converter with integrated MOSFETs.

The TPS54334 enables small designs by integrating the MOSFETs and implementing current mode control to reduce external component count.

Efficiency is maximized through the integrated 128mΩ/84mΩ MOSFETs, low quiescent supply current and pulse skipping at light loads. Using the enable pin, shutdown supply current is reduced to 2 µA by entering a shutdown mode.

The TPS54334 provides accurate regulation for a variety of loads with an accurate 1.5% voltage reference over temperature.

Cycle by cycle current limiting on the high-side fet protects the TPS54334 in overload situations and is enhanced by a low-side sourcing current limit which prevents current runaway. There is also a low-side sinking current limit which turns off the low-side MOSFET to prevent excessive reverse current. Hiccup protection will be triggered if the overcurrent condition has persisted for longer than the preset time. Thermal hiccup protection disables the part when die temperature exceeds thermal shutdown temperature and enables the part again after the built-in thermal hiccup time.

The TPS54334 is a 28-V, 3-A, low quiescent supply current (IQ), synchronous monolithic buck converter with integrated MOSFETs.

The TPS54334 enables small designs by integrating the MOSFETs and implementing current mode control to reduce external component count.

Efficiency is maximized through the integrated 128mΩ/84mΩ MOSFETs, low quiescent supply current and pulse skipping at light loads. Using the enable pin, shutdown supply current is reduced to 2 µA by entering a shutdown mode.

The TPS54334 provides accurate regulation for a variety of loads with an accurate 1.5% voltage reference over temperature.

Cycle by cycle current limiting on the high-side fet protects the TPS54334 in overload situations and is enhanced by a low-side sourcing current limit which prevents current runaway. There is also a low-side sinking current limit which turns off the low-side MOSFET to prevent excessive reverse current. Hiccup protection will be triggered if the overcurrent condition has persisted for longer than the preset time. Thermal hiccup protection disables the part when die temperature exceeds thermal shutdown temperature and enables the part again after the built-in thermal hiccup time.

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Technical documentation

Design & development

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Evaluation board

TPS54334EVM-722 — TPS54334EVM-722 3-A Regulator Evaluation Module

The TPS54334 is a 28-V, 3-A, low quiescent supply current (IQ), synchronous monolithic buck converter with integrated MOSFETs.The TPS54334 enables small designs by integrating the MOSFETs and implementing current mode control to reduce external component count.

Efficiency is maximized through the (...)

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Simulation model

TPS54335A Unencrypted PSpice Average Model Package (Rev. A) TPS54335A Unencrypted PSpice Average Model Package (Rev. A)

Simulation model

TPS54334 PSpice Transient Model TPS54334 PSpice Transient 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 (...)
Package Pins Download
SO PowerPAD (DDA) 8 View options
VSON (DRC) 10 View options

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