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reference designMP3423

Monolithic Power Systems MP3423

9A, 600kHz Synchronous Step-Up Converter with Output Disconnect in 2x2mm QFN Package

Overview

TopologyBoost Converter
Input voltage2.8-4.2 V
Switching frequency440-760 kHz
Output 15 V / 3.1 A
IC revision1.01

Description

The MP3423 is a high-efficiency, synchronous, current-mode, step-up converter with output disconnect.

The MP3423 can start up from an input voltage as low as 1.9V while provide inrush current limiting, and output short-circuit protection. The integrated, P-channel, synchronous rectifier improves efficiency and eliminates the need for an external Schottky diode. The PMOS disconnects the output from the input when the part shuts down.

The 600kHz switching frequency allows for small external components, while the internal compensation and the soft-start minimize the external component count. MP3423 provides small size solution for 5V/3.1A load from a supply voltage down to 2.8V.

The MP3423 is available in 14-pin QFN 2mmx2mm package.

Features

  • 1.9V to 5.5V Input Work Range
  • 2.5V to 5.5V Output Range
  • Internal Synchronous Rectifier
  • 600kHz Fixed Frequency Switching
  • 9A Typical Switch Current Limit
  • 43uA Quiescent Current
  • High Efficiency over Full Load Range
  • Internal Soft-start and Compensation
  • True Output Load Disconnect from Input
  • OCP, SCP, OVP and OTP Protection
  • Small QFN-14 (2mmx2mm) Package

Typical applications

  • Personal Medical Devices
  • Portable Media Players
  • Handheld Computers and Smart-Phones
  • Battery-Powered Products
  • Wireless Peripherals

More information

Parts approved by Monolithic Power Systems

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
Qty.
SamplesAvailability & Sample
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744311150
SPECWE-HCI SMT Flat Wire High Current Inductor, 1.5 µH, 13.8 A

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

Simu­lation
Availability
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-HCI SMT Flat Wire High Current Inductor
Inductance1.5 µH
Performance Rated Current13.8 A
Saturation Current @ 10%4.5 A
Saturation Current @ 30%14 A
DC Resistance6.6 mΩ
Self Resonant Frequency72 MHz
MaterialSuperflux 
Packaging Unit1000 
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