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TPS5403

ACTIVO

Regulador reductor no síncrono con entrada de 4.5 V a 28 V, salida de 1.7 A, 3.3 V con MOSFET integr

Detalles del producto

Rating Catalog Topology Buck Iout (max) (A) 1.7 Vin (max) (V) 28 Vin (min) (V) 4.5 Vout (max) (V) 3.3 Vout (min) (V) 3.3 Features Adjustable soft start, Fixed Output, Light-load efficiency, Spread Spectrum EMI & noise features Spread Spectrum Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0001 Duty cycle (max) (%) 93
Rating Catalog Topology Buck Iout (max) (A) 1.7 Vin (max) (V) 28 Vin (min) (V) 4.5 Vout (max) (V) 3.3 Vout (min) (V) 3.3 Features Adjustable soft start, Fixed Output, Light-load efficiency, Spread Spectrum EMI & noise features Spread Spectrum Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0001 Duty cycle (max) (%) 93
SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm)
  • Fixed 3.3-V Output
  • 4.5-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
  • 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 and ground connection to 70 kHz)
  • Peak Current-Mode Control
  • Cycle-by-Cycle Over Current Protection
  • Frequency Spread Spectrum and Switching Node Anti-Ringing to Ease EMI Issue
  • External Soft Start
  • Available in SOIC8 Package
  • Fixed 3.3-V Output
  • 4.5-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
  • 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 and ground connection to 70 kHz)
  • Peak Current-Mode Control
  • Cycle-by-Cycle Over Current Protection
  • Frequency Spread Spectrum and Switching Node Anti-Ringing to Ease EMI Issue
  • External Soft Start
  • Available in SOIC8 Package

The TPS5403 is a monolithic non-synchronous buck regulator with wide operating input voltage range from 4.5 V to 28 V. Current mode control with internal slope compensation is implemented to reduce component count.

TPS5403 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 TPS5403 is a monolithic non-synchronous buck regulator with wide operating input voltage range from 4.5 V to 28 V. Current mode control with internal slope compensation is implemented to reduce component count.

TPS5403 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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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos Monolithic Non-Synchronous Step-Down Regulator With Integrated MOSFET , datasheet 12/09/2012
Guía del usuario TPS5403 Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 1/11/2021

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