Hysteretic PFET Buck Controller

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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. This Hysteretic PFET Buck Controller consists of a VCC monitor for control-ling the state of the device, 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 duty cycle to approximately 1/30 of its cycle during short circuit conditions.

The CS51031 is available in 8 Lead SO plastic packages.

  • FPGA, DSP, I/O and Core
  • Graphics Card
  • 1A Totem Pole Output Driver
  • High Speed Oscillator (700 Hz max)
  • No Stability Compensation Required
  • Lossless Short Circuit Protection
  • VCC Monitor
  • 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

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8

Product

Status

ECAD Models

Compliance

Package Type

Case Outline

MSL Type

MSL Temp (°C)

Container Type

Container Qty.

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Topology

Phases

Control Mode

VCC Min (V)

VCC Max (V)

fSW Typ (kHz)

Pricing ($/Unit)

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CS51031GDR8

Obsolete

Pb

A

H

P

SOIC-8

1

235

REEL

2500

N

Step-Down

1

Hysteretic

4.5

16

200

Price N/A

More Details

CS51031GD8

Obsolete

Pb

A

H

P

SOIC-8

1

235

TUBE

98

N

Step-Down

1

Hysteretic

4.5

16

200

Price N/A

More Details

CS51031YD8G

Obsolete

Pb

A

H

P

SOIC-8

1

260

TUBE

98

N

Step-Down

1

Hysteretic

4.5

16

200

Price N/A

More Details

CS51031YD8

Obsolete

Pb

A

H

P

SOIC-8

1

235

TUBE

98

N

Step-Down

1

Hysteretic

4.5

16

200

Price N/A

More Details

CS51031GD8G

Obsolete

Pb

A

H

P

SOIC-8

1

260

TUBE

98

N

Step-Down

1

Hysteretic

4.5

16

200

Price N/A

More Details

CS51031GDR8G

Obsolete

Pb

A

H

P

SOIC-8

1

260

REEL

2500

N

Step-Down

1

Hysteretic

4.5

16

200

Price N/A

More Details

CS51031YDR8

Obsolete

Pb

A

H

P

SOIC-8

1

235

REEL

2500

N

Step-Down

1

Hysteretic

4.5

16

200

Price N/A

More Details

CS51031YDR8G

Last Shipments

Pb

A

H

P

SOIC-8

1

260

REEL

2500

N

Step-Down

1

Hysteretic

4.5

16

200

Price N/A

More Details

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