SP7651

3A, 900kHz Buck Regulator

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.

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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 mΩ 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
  • Nonsynchronous start up into a pre-charged output
  • Small 7mm x 4mm DFN package

Documentation

Spice Models - OrCAD

Orcad Spice Model

Spice Models - Generic

Generic Spice Model

Product Brochure

Power Management Brochure

Application

Design Tools

Simulation Models
Technical Library
Reference Designs

Packaging

Pkg Code Details Quantities Dimensions PDF
DFN26 7x4
  • JEDEC Reference: n/a
  • MSL Pb-Free: L3 @ 260ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 36ºC/W
  • Bulk Pack Style: Canister
  • Quantity per Bulk Pack: n/a
  • Quantity per Reel: 3000
  • Quantity per Tube: n/a
  • Quantity per Tray: n/a
  • Reel Size (Dia. x Width x Pitch): 330 x 16 x 8
  • Tape & Reel Unit Orientation: Pin 1 at sprocket hole
  • Dimensions: mm
  • Length: 7
  • Width: 4
  • Thickness: 0.9
  • Lead Pitch: 0.5

Parts & Purchasing

Part Number Pkg Code RoHS Min Temp Max Temp Status Buy Now Order Samples
SP7651BER-L DFN26 7x4 -40 85 OBS
SP7651ER DFN26 7x4 -40 85 OBS
SP7651ER/TR DFN26 7x4 -40 85 OBS
SP7651ER-L DFN26 7x4 -40 85 OBS Suggested:
SP7651ER-L/TR
SP7651ER-L/TR DFN26 7x4 -40 85 Active
SP7651EB Board 0 85 Active
Show obsolete parts
Part Status Legend
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.
Distribution Date Description File
05/01/2017 Embedded FETs updated to latest production version. PCN 16-0207-01 FETs-1033.pdf
01/05/2017 Addition of an alternate qualified location, ANST, China. PCN 16-0835-01 ANST-1033.pdf
07/26/2016 Product discontinuation notification. Discontinued. PDN 16-0626-01-1033.pdf
10/16/2013 Qualified PPF (NiPdAu) lead termination finish in assembly to replace matte-tin plating. Material change. PCN_13-0936-01-1033.pdf
10/04/2013 Addition of an alternate qualified assembly site, UTAC Thailand, for assembly using copper or gold wire bonding. Material change and alternate assembly site. PCN_13-0522-04-1033.pdf
02/28/2007 Product Obsolescence Letter and Discontinuation Notification. Discontinued. POL_022807-1033.pdf