CS51033

Hysteretic PFET Buck Controller

Overview

The Hysteretic PFET Buck Controller 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 PFET Buck Controller 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.

The high frequency oscillator allows the use of small inductors and output capacitors, minimizing PC board area and systems cost. The programmable soft start reduces current surges at start up. The short circuit protection timer significantly reduces the PFET duty cycle to approximately 1/30 of its normal cycle during short circuit conditions.

The CS51033 is available in 8L SO and 8L PDIP plastic packages.

Features

1.0 A Totem Pole Output Driver
High Speed Oscillator (700kHz max)
No Stability Compensation Required
Lossless Short Circuit Protection
2% 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

Material Composition

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Reference Price

CS51033GD8

Obsolete

SOIC-8

751-07

235

TUBE

Hysteretic

3.135

3.465

200

Price N/A

CS51033GD8G

Obsolete

SOIC-8

751-07

260

TUBE

Hysteretic

3.135

3.465

200

Price N/A

CS51033GDR8

Obsolete

SOIC-8

751-07

235

REEL

2500

Hysteretic

3.135

3.465

200

Price N/A

CS51033GDR8G

Obsolete

SOIC-8

751-07

260

REEL

2500

Hysteretic

3.135

3.465

200

Price N/A

CS51033YD8

Obsolete

SOIC-8

751-07

235

TUBE

Hysteretic

3.135

3.465

200

Price N/A

CS51033YD8G

Obsolete

SOIC-8

751-07

260

TUBE

Hysteretic

3.135

3.465

200

Price N/A

CS51033YDR8

Obsolete

SOIC-8

751-07

235

REEL

2500

Hysteretic

3.135

3.465

200

Price N/A

CS51033YDR8G

Obsolete

SOIC-8

751-07

260

REEL

2500

Hysteretic

3.135

3.465

200

Price N/A

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Controllers | CS51033

Hysteretic PFET Buck Controller

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