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 |
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 | May 2024 | 7.1 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 |
---|---|---|---|---|---|---|
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 |
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 |
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DFN26 7x4 |
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Notifications
FAQs & Support
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