GENERAL DESCRIPTION

The SP6137 is a 900kHz constant frequency, voltage mode, synchronous PWM step down controller optimized for high efficiency.

The SP6137 is adequately suited for split plane applications utilizing a low power 5V rail to power the controller circuitry, minimizing power dissipation. Its wide input voltage range of 3V to 15V allows for conversions from the standard 3.3V, 5V, 9.6V and 12V power rails to an output voltage adjustable down to 0.8V. Developed around a wide bandwidth internal amplifier, the SP6137 can accommodate type II and type III compensation schemes.

FEATURES

• 2.5V to 20V Step Down Achieved Using Dual Input

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

• Up to 10A Output Capability

• UVLO Detects Both VCC and VIN

• Short-Circuit Protection with AutoRestart

• Supports Type II or III Compensation

• Programmable Soft Start

• Fast Transient Response

• High Efficiency: Greater than 94%

• Non-synchronous Start-Up

• Small 10-Pin MSOP Package

• U.S. Patent #6,922,041

APPLICATIONS

• 12V DPA

• Communications Systems

• Graphics Cards