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TPS5405

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6.5V to 28V Input, 5V Fixed Output at 2A Step-Down Regulator with Intregrated MosFET

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Data sheet

TPS5405

ACTIVE
Data sheet Order now

Product details

Iout (max) (A) 2 Vin (min) (V) 6.8 Vin (max) (V) 28 Type Converter Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 1100
Iout (max) (A) 2 Vin (min) (V) 6.8 Vin (max) (V) 28 Type Converter Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 1100
SOIC (D) 8 29.4 mm² 4.9 x 6
  • Fixed 5-V Output
  • 6.5-V to 28-V Wide Input Voltage Range
  • Up to 2-A Maximum Continuous Output Loading Current
  • Pulse Skipping Mode to Achieve High Light Load Efficiency
  • Over 80% Efficiency at 10-mA Loading
  • Adjustable 50-kHz to 1.1-MHz Switching Frequency Set by an
    External Resistor (Leave pin ROSC floating. Set frequency to
    120 kHz)
  • Peak Current-Mode Control
  • Cycle-by-Cycle Over Current Protection
  • Switching Node Anti-Ringing to Ease EMI Issue
  • External Soft Start
  • Available in SOIC8 Package
  • Fixed 5-V Output
  • 6.5-V to 28-V Wide Input Voltage Range
  • Up to 2-A Maximum Continuous Output Loading Current
  • Pulse Skipping Mode to Achieve High Light Load Efficiency
  • Over 80% Efficiency at 10-mA Loading
  • Adjustable 50-kHz to 1.1-MHz Switching Frequency Set by an
    External Resistor (Leave pin ROSC floating. Set frequency to
    120 kHz)
  • Peak Current-Mode Control
  • Cycle-by-Cycle Over Current Protection
  • Switching Node Anti-Ringing to Ease EMI Issue
  • External Soft Start
  • Available in SOIC8 Package

The TPS5405 is a monolithic non-synchronous buck regulator with wide operating input voltage range from 6.5 V to 28 V. Current mode control with internal slope compensation is implemented to reduce component count.

TPS5405 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.

LX anti-ringing is added to address high frequency EMI issues.

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

The TPS5405 is a monolithic non-synchronous buck regulator with wide operating input voltage range from 6.5 V to 28 V. Current mode control with internal slope compensation is implemented to reduce component count.

TPS5405 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.

LX anti-ringing is added to address high frequency EMI issues.

A cycle-by-cycle current limit with frequency fold back protects the IC at over loading condition.
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* Data sheet Monolithic Non-Synchronous Step-Down Regulator With Integrated MOSFET datasheet (Rev. B) 19 Apr 2013

Design & development

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

Evaluation board

TPS5405EVM — TPS5405 Evaluation Module

The TPS5405 is designed to provide fixed 5-V output and 2-A continuous current with an operational range of 6.5 V to 28 V and an external set switching frequency ranging from 50 kHz to 1.1 MHz.
  • Fixed 5-V Output
  • 6.5-V to 28-V Wide Input Voltage Range
  • Up to 2-A Maximum Continuous Output Loading Current
  • (...)
User guide: PDF
Not available on TI.com
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Design guide: PDF
Schematic: PDF
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The PMP4467 is a 6.5V to 28Vin, +5Vout, 1.3A reference design module which is implemented in TO220 package, targetting for general LDO replacement. The design includes a non-synchronous step-down regulator TPS5405. The solution has high efficiency, good line, load regulation. The power module was (...)
Test report: PDF
Schematic: PDF
Package Pins Download
SOIC (D) 8 View options
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