SP7651

3A, 900kHz Buck Regulator
Data Sheets OBS (Obsolete)

Overview

Information 3A 900kHz Buck Regulator
# of Outputs 1
IOUT (A) 3
VIN MIN (V) 2.5
VIN MAX (V) 20
IQ (µA) 1500
VOUT MIN (V) 0.8
VOUT MAX (V) 19
Frequency (kHz) 900
Accuracy (%) 1.0
Efficiency (%) 92
Package DFN-26
X x Y Package Dimension (mm) 7x4
Control Mode Voltage Mode PWM
Special Features Enable, Power Sequencing, Synchronous Rectification, Thermal Shutdown, UVLO Adjustable, Soft Start Adjustable
Operating Temperature (°C) -40 to 125
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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.

  • 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 & Design Tools

Type Title Version Date File Size
Data Sheets SP7651 Wide Input Voltage Range 3Amp 900kHz Buck Regulator 1.0.0 March 2007 1 MB
Application Notes AN200, Downloading and Installing CAD Symbols and Footprints with Ultra Librarian April 2019 1.2 MB
Design Solutions DS-65, SP7651 First Generation PowerBlox Creates 2A Peak Current off Adapter 12V Secondary (10V to 15V Input) June 2007 113.4 KB
Spice Models - Generic Generic Spice Model November 2007 4.2 KB
Spice Models - OrCAD Orcad Spice Model November 2007 20.3 KB
Product Brochures Power Management Brochure October 2020 2.4 MB
SIMPLIS Models SP7651 SIMPLIS Model May 2011 12.9 MB
Symbols & Footprints SP7651ER-L/TR CAD File (.bxl) September 2018 46 KB
SIMPLIS Models Powerlab Netlists
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Quality & RoHS

Part Number RoHS | Exempt RoHS Halogen Free REACH TSCA MSL Rating / Peak Reflow Package
SP7651ER-L/TR N Y Y Y Y L3 / 260ᵒC DFN26 7x4

Click on the links above to download the Certificate of Non-Use of Hazardous Substances.

Additional Quality Documentation may be available, please Contact Support.

Parts & Purchasing

Part Number Pkg Code Min Temp Max Temp Status Suggested Replacement PDN
SP7651BER-L DFN26 7x4 -40 85 OBS
SP7651ER DFN26 7x4 -40 85 OBS
SP7651ER-L DFN26 7x4 -40 85 OBS SP7651ER-L/TR
SP7651ER-L/TR DFN26 7x4 -40 85 OBS SP7652ER-L/TR
SP7651ER/TR DFN26 7x4 -40 85 OBS
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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.

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: Quadrant 1
  • Dimensions: mm
  • Length: 7
  • Width: 4
  • Thickness: 1.00
  • Lead Pitch: 0.5

Notifications

Distribution Date Description File
01/12/2021 Product Discontinuation Notice
05/01/2017 Embedded FETs updated to latest production version.
01/05/2017 Addition of an alternate qualified location, ANST, China.
07/26/2016 Product discontinuation notification. Discontinued.
10/16/2013 Qualified PPF (NiPdAu) lead termination finish in assembly to replace matte-tin plating. Material change.
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.
02/28/2007 Product Obsolescence Letter and Discontinuation Notification. Discontinued.

FAQs & Support

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