|Information||3A 900kHz Buck Regulator|
|# of Outputs||1|
|VIN MIN (V)||2.5|
|VIN MAX (V)||20|
|VOUT MIN (V)||0.8|
|VOUT MAX (V)||19|
|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|
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
|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|
Quality & RoHS
Parts & Purchasing
|Part Number||Pkg Code||Min Temp||Max Temp||Status||Suggested Replacement||PDN|
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.
FAQs & Support
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