SP7651

Solved by TM Wide Input Voltage Range 3Amp 900kHz Buck Regulator SP7651 FEATURES 2.5V to 20V Step Down Achieved Using Dual Input Output Voltage down to 0.8V SP7651 DFN PACKAGE 7mm x 4mm 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 LX 26 LX 25 LX 24 LX 23 VCC 22 GND 21 GND 20 BOTTOM VIEW Heatsink Pad 1 Connect to Lx Pin 27 Heatsink Pad 2 Connect to GND 1 PGND 2 PGND 3 PGND 4 GND 5 VFB 6 COMP 7 UVIN Wide BW Amp Allows Type II or III Compensation GND 19 Pin 28 8 GND Programmable Soft Start BST 18 9 SS Fast Transient Response High Efficiency: Greater than 92% Possible Asynchronous Start-Up into a Pre-Charged Output Small 7mm x 4mm DFN Package NC 17 LX 16 LX 15 LX 14 Heatsink Pad 3 Connect to VIN Pin 29 10 VIN 11 VIN 12 VIN 13 VIN U.S. Patent #6,922,041 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 U...