SP6132

SP6132 Wide Input, 300KHz Synchronous PWM Controller FEATURES ■ 3V to 15V Step Down Achieved Using Dual Input ■ On-Board 1.5Ω sink (2Ω source) NFET Drivers ■ Up to 30A Ouput Capability ■ Highly Integrated Design, Minimal Components ■ UVLO Detects Both VCC and VIN ■ 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 95% Possible ■ A Synchronous Start-Up into a Pre-Charged Output ■ Small 10-Pin MSOP Package ■ U.S. Patent #6,922,041 VCC 1 GL 2 GND 3 VFB 4 COMP 5 SP6132 10 Pin MSOP 10 BST 9 GH 8 SWN 7 SS 6 UVIN Now Available in Lead Free Packaging APPLICATIONS ■ Wireless Base Station ■ Automotive ■ Industrial ■ Power Supply DESCRIPTION The SP6132 is wide input, synchronous step-down switching controller 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 SP6132 is designed to drive a pair of external NFETs using a fixed 300kHz frequency, PWM voltage mode architecture. Protection features include UVLO, thermal shutdown and output short circuit protection. The SP6132 is available in the cost and space saving 10-pin MSOP. TYPICAL APPLICATION CIRCUIT VCC 8765 QT FDS7088N3 4 21A, 5mΩ 123 C1 22µF 16V C2 22µF 16V C1, C2 Ceramic 1210 X5R VIN 12V GND R3 221k, 1% UVIN R4 100k, 1% DBST M...