Converters | NCP1523B

Buck Converter, DC-DC, High Efficiency, Adjustable Output Voltage, 3 MHz, 600 mA

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The NCP1523 step-down PWM DC-DC converter is optimized for portable applications powered from 1-cell Li-ion or 3 cell Alkaline/NiCd/NiMH batteries. The device is available in an adjustable output voltage from 0.9 V to 3.3 V. It uses synchronous rectification to increase efficiency and reduce external part count. The device also has a built-in 3 MHz (nominal) oscillator which reduces component size by allowing use of a small inductor and capacitors. NCP1523 is available in automatic switching PWM/PFM (NCP1523FCT2G) improving system efficiency and in PWM mode only (NCP1523BFCT2G) offering a very efficient load transient solution. Additional features include integrated soft-start, cycle-by-cycle current limiting and thermal shutdown protection. The NCP1523 is available in a space saving, 8 pin chip scale package.

  • Power supply for application processor
  • Power supply for processor with low core voltage
  • Cellular phones, smart phones, and PDAs
  • MP3 players and portable audio systems
  • Digital still cameras and video cameras
  • Up to 93% Efficiency, 60 uA Quiescent Current, Shutdown Current Consumption of 0.3 A
  • Auto-switching between PWM and PFM mode at light load conditions (NCP1523FCT2G)
  • PWM mode operation (NCP1523BFCT2G)
  • Adjustable output voltage from 0.9V to 3.3V

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NCP1523BFCT2G

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Obsolete

CAD Model

Pb

A

H

P

Flip-Chip-8

766AE

1

0

DSFTP

3000

N

Step-Down

Voltage Mode

2.7

5.5

0.9 to 3.3

0.6

93

3000

Price N/A

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