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reference designMP1474S

Monolithic Power Systems MP1474S

High-Efficiency, 2A, 16V, 500kHz Synchronous, Step-Down Converter

Overview

TopologyBuck Converter
Input voltage12 V
Switching frequency410-630 kHz
Output 13.3 V / 2 A
Output 25 V / 2 A
IC revision1.0

Description

The MP1474S is a high-frequency, synchronous, rectified, step-down, switch-mode converter with built-in power MOSFETs. It offers a compact solution to achieve a 2A continuous output current with excellent load and line regulation over a wide input-supply range. The MP1474S has synchronous-mode operation for higher efficiency over the output current-load range.

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

Full protection features include over-current protection (OCP) and thermal shutdown (TSD).

The MP1474S requires a minimal number of readily available, standard, external components and is available in a space-saving 8-pin TSOT23 package.

Features

    • Wide 4.5V to 16V Operating-Input Range
  • -150mΩ/70mΩ Low RDS(ON) Internal Power MOSFETs
  • -High-Efficiency Synchronous-Mode Operation
  • -Fixed 500kHz Switching Frequency
  • -Synchronizes from a 300kHz to 2MHz External Clock
  • -Power-Save Mode at Light Load
  • -Internal Soft-Start
  • -Power Good Indicator
  • -Over-Current Protection and Hiccup
  • -Thermal Shutdown
  • -Output Adjustable from 0.8V
  • -Available in a 8-pin TSOT-23 Package

Typical applications

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

More information

Products

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Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
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744325550
SPECWE-HCI SMT Flat Wire High Current Inductor, 5.5 µH, 12 A
Simu­lation
Availability
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Downloads9 files

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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCI SMT Flat Wire High Current Inductor
Inductance5.5 µH
Performance Rated Current12 A
Saturation Current @ 10%4.5 A
Saturation Current @ 30%12 A
DC Resistance10.3 mΩ
Self Resonant Frequency30 MHz
MaterialSuperflux 
Packaging Unit700 
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