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reference designNB671A

Monolithic Power Systems NB671A

24V, High Current Synchronous Step-down Converter

Overview

TopologyBuck Converter
Input voltage7-22 V
Switching frequency400-600 kHz
Output 15 V / 6 A
IC revision1.0

Description

The NB671A is a fully integrated high frequency synchronous rectified step-down switch mode converter. It offers very compact solutions toachieve 6A continuous output current and 9A peak current over a wide input supply range with excellent load and line regulation. The NB671A operates at high efficiency over a wide output current load range.

Constant-On-Time (COT) control mode provides fast transient response and eases loop stabilization.

Under voltage lockout is internally set as 4.6 V, An open drain power good signal indicates the output is within its nominal voltage range.

Full protection features include OCP, OVP, and thermal shut down.

The converter requires minimum number of external components and is available in QFN16 (3mmx3mm) package.

Features

  • Wide 5V to 24V Operating Input Range
  • 6A Continuous Output Current
  • 9A Peak Output Current
  • Low RDS(ON) Internal Power MOSFETs
  • Proprietary Switching Loss Reduction Technique
  • 1% Reference Voltage
  • 7ms Internal Soft Start
  • Output Discharge
  • 500kHZ Switching Frequency
  • OCP, OVP, UVP Protection and Thermal Shutdown
  • Output Adjustable from 0.604V to 5.5V

Typical applications

  • Tablet PC
  • Personal Video Recorders
  • Flat Panel Television and Monitors
  • Networking Systems
  • Laptop Computer
  • 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
Qty.
SamplesAvailability & Sample
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7443552200
SPECWE-HCI SMT Flat Wire High Current Inductor, 2 µH, 14.8 A
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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
Inductance2 µH
Performance Rated Current14.8 A
Saturation Current @ 10%5 A
Saturation Current @ 30%13 A
DC Resistance7.3 mΩ
Self Resonant Frequency53 MHz
MaterialWE-PERM 
Packaging Unit800 
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