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MaxLinear SP7651

Wide Input Voltage Range 3Amp 900kHz Buck Regulator

Overview

TopologyBuck Converter
Input voltage12 V
Switching frequency810-990 kHz
Output 13.3 V / 3 A
IC revisionJ

Description

The SP7651 is a high voltage synchronous step-down switching regulator optimized for high efficiency. The part is designed to be especially attractive for dual supply, 12V step down with 5V used to power the controller. This lower VCC voltage minimizes power dissipation in the part. The SP7651 is designed to provide a fully integrated buck regulator solution using a fixed 900kHz frequency, PWM voltage mode architecture. Protection features include UVLO, thermal shutdown and output short circuit protection. The SP7651 is available in the space saving 7mm X 4mm DFN package.

Features

2.5V to 20V Step Down Achieved Using Dual Input

  • Output Voltage down to 0.8V
  • 3A Output Capability (Up to 5A with Air Flow)
  • Built in Low RDSON Power FETs (40 mÙ typ)
  • Highly Integrated Design, Minimal Components
  • 900 kHz Fixed Frequency Operation
  • UVLO Detects Both VCC and VIN
  • Over Temperature Protection
  • Short Circuit Protection with Auto-Restart
  • Wide BW Amp Allows Type II or III Compensation
  • Programmable Soft Start
  • Fast Transient Response
  • High Efficiency: Greater than 92% Possible
  • Asynchronous Start-Up into a Pre-Charged Output
  • Small 7mm x 4mm DFN Package
  • U.S. Patent #6,922,041

Products

Order Code Data­sheet Downloads Product seriesL
(µH)
IR
(A)
LR
(µH)
ISAT
(A)
RDC
(mΩ)
fres
(MHz)
MaterialVersion Samples
744311470
STE ALT EAG CAD LTS PSP SPE IGS CADWE-HCI SMT Flat Wire High Current Inductor 4.7 6 3.5 7 19.5 33 Superflux SMT
Order Code Data­sheet
744311470
Samples
Order Code Data­sheet Downloads Product seriesL
(µH)
IR
(A)
LR
(µH)
ISAT
(A)
RDC
(mΩ)
fres
(MHz)
MaterialVersion Samples