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.

FEATURES

■ 3V to 12V Step Down Achieved Using Dual Input

■ 2A to 15A Ouput Capability

■ Highly Integrated Design, Minimal Components

■ UVLO Detects Both VCC and VIN

■ Short Circuit Protection with Auto-Restart

■ On-Board 1.5Ω sink (2Ω source) NFET Drivers

■ 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