Converters | NCP1593

Synchronous Buck Regulator, 1 MHz, 3.0 A

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Overview

The NCP1593 is a fixed 1 MHz, high output current, synchronous PWM converter that integrates a low-resistance, high-side P-channel MOSFET and a low-side N-channel MOSFET. The NCP1593 utilizes internally compensated current mode control to provide good transient response, ease of implementation and excellent loop stability. It regulates input voltages from 4.0 V to 5.5 V down to an output voltage as low as 0.6 V and is able to supply up to 3 A of load current. The NCP1593 includes an internally fixed switching frequency (FSW), and an internal soft-start to limit inrush current. Other features include cycle-by-cycle current limiting, 100% duty cycle operation, short- circuit protection, power saving mode and thermal shutdown.

  • +5Vin buck regulator

  • DVD Drives and HDD
  • Notebook Computing
  • Set-Top-Box (STB)

  • Wide Input Voltage Range: from 4.0 V to 5.5 V
  • Internal 90 mΩ High-Side P-Channel MOSFET and 70 mΩ Low-Side N-Channel MOSFET
  • Fixed 1 MHz Switching Frequency
  • Cycle-by-Cycle Current Limiting
  • Hiccup Mode Short-Circuit Protection
  • Overtemperature Protection
  • Internal Fixed SoftStart with External Adjustment
  • Start-up with Pre-Biased Output Load
  • Adjustable Output Voltage Down to 0.6 V
  • Auto Power Saving Mode During Light Load
  • 100% Duty Cycle Operation

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NCP1593AMNTWG

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Active

CAD Model

Pb

A

H

P

DFN-10

485C

1

260

REEL

3000

N

Step-Down

Current Mode

4

5.5

0.6 - 5.0

3

90

1000

$0.482

More Details

NCP1593BMNTWG

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Active

CAD Model

Pb

A

H

P

DFN-10

485C

1

260

REEL

3000

N

Step-Down

Current Mode

4

5.5

0.6 - 5.0

3

90

1000

$0.482

More Details

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Reliability Data

Die Related Summary Data

Device: NCP1593AMNTWG

Equivalent to wafer fab process: ONC25

Product Technology

Product Technology

Equivalent Device-Hours

MTBF/MTTF in Hours

FITS

ONC25

1

2712519294

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Re-calculate Data

Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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