Buck Regulator, Low Voltage, 1.5 A, 260 kHz, with External Bias

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Overview

The CS5141X products are 1.5A buck regulator ICs. These devices are fixed- frequency operating at 260kHz and 520kHz. The regulators use the V2 control architecture to provide unmatched transient response, the best overall regulation and the simplest loop compensation for today's high- speed logic. These products accommodate input voltages from 4.5V to 40V.

The CS51411 and CS51413 contain synchronization circuitry. The CS51412 and CS51414 have the option of powering the controller from an external 3.3V to 6V supply in order to improve efficiency, especially in high input voltage, light load conditions.

The on-chip NPN transistor is capable of providing a minimum of 1.5A of output current, and is biased by an external "boost" capacitor to ensure saturation, thus minimizing on-chip power dissipation. Protection circuitry includes thermal shutdown, cycle-by- cycle current limiting and frequency foldback. The CS51411 and CS51413 are functionally pin-compatible with the LT1375. The CS51412 and CS51414 are functionally pin-compatible with the LT1376.

  • Distributed Power
  • Battery Charger
  • V2 Architecture Provides Ultra-Fast Transient Response, Improved Regulation and Simplified Design
  • 2.0% Error Amp Reference Voltage Tolerance
  • Switch Frequency Decrease of 4:1 in Short Circuit Conditions
  • BOOST pin for Bootstrapped Operation
  • Synchronization Function
  • Shutdown Lead Provides Power-Down Option
  • 85uA Quiescent Current During Power-Down
  • Thermal Shutdown
  • Soft Start
  • Pin-Compatible with LT1375 and LT1376
  • Pb-Free Packages are Available

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CAD Models

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Reference Price

CS51412ED8

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Obsolete

CAD Model

Pb

A

H

P

SOIC-8

1

235

TUBE

98

N

Step-Down

V2

4.5

40

-

1.5

-

260

Price N/A

More Details

CS51412ED8G

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Obsolete

CAD Model

Pb

A

H

P

SOIC-8

1

260

TUBE

98

N

Step-Down

V2

4.5

40

-

1.5

-

260

Price N/A

More Details

CS51412EDR8

Loading...

Obsolete

CAD Model

Pb

A

H

P

SOIC-8

1

235

REEL

2500

N

Step-Down

V2

4.5

40

-

1.5

-

260

Price N/A

More Details

CS51412EDR8G

Loading...

Obsolete

CAD Model

Pb

A

H

P

SOIC-8

1

260

REEL

2500

N

Step-Down

V2

4.5

40

-

1.5

-

260

Price N/A

More Details

CS51412EMNR2G

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Obsolete

CAD Model

Pb

A

H

P

DFN-18

1

260

REEL

2500

N

Step-Down

V2

4.5

40

-

1.5

-

260

Price N/A

More Details

CS51412GD8

Loading...

Obsolete

CAD Model

Pb

A

H

P

SOIC-8

1

235

TUBE

98

N

Step-Down

V2

4.5

40

-

1.5

-

260

Price N/A

More Details

CS51412GD8G

Loading...

Obsolete

CAD Model

Pb

A

H

P

SOIC-8

1

260

TUBE

98

N

Step-Down

V2

4.5

40

-

1.5

-

260

Price N/A

More Details

CS51412GDR8

Loading...

Obsolete

CAD Model

Pb

A

H

P

SOIC-8

1

235

REEL

2500

N

Step-Down

V2

4.5

40

-

1.5

-

260

Price N/A

More Details

CS51412GDR8G

Loading...

Obsolete

CAD Model

Pb

A

H

P

SOIC-8

1

260

REEL

2500

N

Step-Down

V2

4.5

40

-

1.5

-

260

Price N/A

More Details

CS51412GMNR2G

Loading...

Obsolete

CAD Model

Pb

A

H

P

DFN-18

1

260

REEL

2500

N

Step-Down

V2

4.5

40

-

1.5

-

260

Price N/A

More Details

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