Fast P−Ch FET Buck Controller

The CS51033 is a switching controller for use in DC−DC converters. It can be used in the buck topology with a minimum number of external components. The CS51033 consists of a 1.0 A power driver for controlling the gate of a discrete P−Channel transistor, fixed frequency oscillator, short circuit protection timer, programmable Soft−Start, precision reference, fast output voltage monitoring comparator, and output stage driver logic with latch.

Features
• 1.0 A Totem Pole Output Driver
• High Speed Oscillator (700 kHz max)
• No Stability Compensation Required
• Lossless Short Circuit Protection
• 2.0% Precision Reference
• Programmable Soft−Start
• Wide Ambient Temperature Range:
    ♦ Industrial Grade: −40°C to 85°C
    ♦ Commercial Grade: 0°C to 70°C
• Pb−Free Packages are Available