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reference designMP1497S

Monolithic Power Systems MP1497S

High Efficiency 3A, 16V, 500kHz Synchronous Step Down Converter

Overview

TopologyBuck Converter
Input voltage4.5-16 V
Switching frequency410-600 kHz
Output 13.3 V / 3 A
IC revision1.01

Description

The MP1497S is a high-frequency, synchronous, rectified, step-down switch mode converter with built in internal power MOSFETs. It offers a very compact solution to achieve 3A continuous output current with excellent load and line regulation over a wide input supply range. The MP1497S has synchronous mode operation for higher efficiency over the output currentload range.

Current-mode operation provides a fast transient response and eases loop stabilization.

Protective features include over-current protection, thermal shutdown, and external SS control.

The MP1497S requires a minimal number of readily-available external Components and is available in a space-saving 8-pin TSOT23 package.

Features

  • Wide 4.5V-to-16V Operating Input Range
  • 120mΩ/50mΩ Low RDS(ON) Internal Power MOSFETs
  • Proprietary Switching-Loss–Reduction Technique
  • High-Efficiency Synchronous Mode Operation
  • Fixed 500kHz Switching Frequency
  • Can Synchronize to a 300kHz-to-2MHz External Clock
  • Externally-Programmable Soft-Start
  • OCP and Hiccup
  • Thermal Shutdown
  • Output Adjustable from 0.8V
  • Available in an 8-pin TSOT-23 Package

Typical applications

  • Notebook Computers and I/O Power
  • Distributed Power Systems
  • Flat-Panel Television and Monitors
  • Digital Set-Top Boxes

More information

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L(µH)
IRP,40K(A)
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744771004
SPECWE-PD SMT Power Inductor, 4.7 µH, 11.8 A
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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-PD SMT Power Inductor
Inductance4.7 µH
Performance Rated Current11.8 A
Saturation Current8.25 A
DC Resistance11 mΩ
Self Resonant Frequency35 MHz
Size1260 
VersionStandard 
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