Buck Regulator, Low Voltage, 1.5 A, 260 kHz, with Sychronization Capability

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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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Product

Status

ECAD Models

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Package Type

Case Outline

MSL Type

MSL Temp (°C)

Container Type

Container Qty.

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Control Mode

VCC Min (V)

VCC Max (V)

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IO Typ (A)

Efficiency (%)

fSW Typ (kHz)

Pricing ($/Unit)

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CS51411GMNR2G

Obsolete

Pb

A

H

P

DFN-18

1

260

REEL

2500

N

Step-Down

V2

4.5

40

-

1.5

-

-

Price N/A

More Details

CS51411GDR8G

Obsolete

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

CS51411EDR8

Obsolete

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

CS51411ED8

Obsolete

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

CS51411GD8

Obsolete

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

CS51411GD8G

Obsolete

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

CS51411EMNR2G

Obsolete

Pb

A

H

P

DFN-18

1

260

REEL

2500

N

Step-Down

V2

4.5

40

-

1.5

-

-

Price N/A

More Details

CS51411EDR8G

Obsolete

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

CS51411ED8G

Obsolete

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

CS51411GDR8

Obsolete

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

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