Converters | NCP1529

Buck Converter, DC-DC, High Efficiency, Adjustable Output Voltage, Low Ripple, 1.7 MHz, 1 A

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Overview

The NCP1529 step-down DC-DC converter is a monolithic integrated circuit for portable applications powered from one cell Li-ion or three cell Alkaline/NiCd/NiMH batteries. The device is able to deliver up to 1.0 A on an output range externally adjustable from 0.9 V to 3.9 V or fixed at 1.2 V or 1.35 V.
It uses synchronous rectification to increase efficiency and reduce external part count. The device also has a built-in 1.7 MHz (nominal) oscillator which reduces component size by allowing a small inductor and capacitors. Automatic switching PWM/PFM mode offers improved system efficiency.
Additional features include integrated soft-start, cycle-by-cycle current limiting and thermal shutdown protection. The NCP1529 is available in a space saving, low profile 2x2x0.5 mm UDFN6 package and TSOP-5 package.

  • Battery powered applications power management
  • Power supply for processor with low core voltage
  • USB powered devices
  • Low Voltage DC rails power management

  • Cellular phones, smart phones, and PDAs
  • MP3 players and portable audio systems

  • 96% efficiency, 28 uA quiescent current, 0.3 uA shutdown current
  • 1.7 MHz switching frequency
  • Auto-switching between PWM and PFM mode at light load conditions
  • Adjustable output voltage from 0.9V to 3.9V
  • Best in class Low Ripple even in PFM mode

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NCP1529ASNT1G

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CAD Model

Pb

A

H

P

TSOP-5 / SOT-23-5

483

1

260

REEL

3000

N

Step-Down

Current Mode

2.7

5.5

0.9 to 3.9

1

96

1700

Price N/A

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NCP1529MU12TBG

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Obsolete

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CAD Model

Pb

A

H

P

UDFN-6

517AB

1

260

REEL

3000

N

Step-Down

Current Mode

2.7

5.5

1.2

1

86

1700

Price N/A

More Details

NCP1529MUTBG

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Last Shipments

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CAD Model

Pb

A

H

P

UDFN-6

517AB

1

260

REEL

3000

N

Step-Down

Current Mode

2.7

5.5

0.9 to 3.9

1

96

1700

Price N/A

More Details

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Reliability Data

Die Related Summary Data

Device: NCP1529ASNT1G

Equivalent to wafer fab process: CMOS STD

Product Technology

Product Technology

Equivalent Device-Hours

MTBF/MTTF in Hours

FITS

CMOS STD

3

3597164517

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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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