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