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TPS5402
  • TPS5402

TPS5402

ACTIVE

3.5V to 28V Input, 1.7A Output, Non-Synchronous Step-Down Regulator with Integrated MOSFET

Texas Instruments TPS5402 Product Info

1 April 2026 4

Parameters

Rating

Catalog

Topology

Buck

Iout (max) (A)

1.7

Vin (max) (V)

28

Vin (min) (V)

3.5

Vout (max) (V)

26

Vout (min) (V)

0.8

Features

Adjustable soft start, Fixed Output, Light-load efficiency, Spread Spectrum

EMI features

Spread Spectrum

Control mode

current mode

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.0001

Duty cycle (max) (%)

93

Package

SOIC (D)-8-29.4 mm² 4.9 x 6

Features

  • 3.5-V to 28-V Wide Input Voltage Range
  • Up to 1.7-A Maximum Continuous Output Loading Current
  • Pulse Skipping Mode to Achieve High Light Load Efficiency
  • High Light Load Efficiency
  • Frequency Spread Spectrum to Reduce EMI
  • Adjustable 50-kHz to 1.1-MHz Switching Frequency Set by an External Resistor
    (Leave pin ROSC floating. Set frequency to 120 kHz and ground connection to 70 kHz)
  • Frequency Spread Spectrum to Ease EMI Issue
  • Peak Current-Mode Control
  • Cycle-by-CycleOver Current Protection
  • External Soft Start
  • Available in SOIC8 Package
  • 3.5-V to 28-V Wide Input Voltage Range
  • Up to 1.7-A Maximum Continuous Output Loading Current
  • Pulse Skipping Mode to Achieve High Light Load Efficiency
  • High Light Load Efficiency
  • Frequency Spread Spectrum to Reduce EMI
  • Adjustable 50-kHz to 1.1-MHz Switching Frequency Set by an External Resistor
    (Leave pin ROSC floating. Set frequency to 120 kHz and ground connection to 70 kHz)
  • Frequency Spread Spectrum to Ease EMI Issue
  • Peak Current-Mode Control
  • Cycle-by-CycleOver Current Protection
  • External Soft Start
  • Available in SOIC8 Package

Description

The TPS5402 is a monolithic non-synchronous buck regulator with wide operating input voltage range from 3.5 V to 28 V. Current mode control with internal slope compensation is implemented to reduce component count.

TPS5402 also features a light load pulse skipping mode, which allows for a power loss reduction from the input power supply to the system at light loading.

The switching frequency of the converters can be set from 50 kHz to 1.1 MHz with an external resistor. Frequency spread spectrum operation is introduced for EMI reduction.

A cycle-by-cycle current limit with frequency fold back protects the IC at over loading condition.

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