Converters | NCP1521B

降压转换器，DC-DC，1.5 MHz，600 mA

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NCP1521B 步降 PWM DC-DC 转换器用于使用一个锂电池或三个碱性/镍镉/镍氢电池供电的便携式应用。该零部件提供可调输出电压版本，电压范围为 0.9 V 至 3.3 V。它使用同步整流来提高能效和减少外部零部件数量。该器件还具有内置的 1.5 MHz（标称）振荡器，允许使用较小的感应器和电容器，从而减小组件尺寸。自动开关 PWM/PFM 模式提高了系统能效。其他功能包括集成的软启动、逐周期电流限制和高温关断保护等。NCP1521B 采用节省空间的薄型 TSOP5 和 UDFN6 封装。

  • 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

  • 96% efficiency, 30 uA quiescent current, 0.3 uA shutdown current
  • 1.5 MHz switching frequency
  • Auto-switching between PWM and PFM mode at light load conditions
  • Adjustable output voltage from 0.9V to 3.3V
  • Best in class Low Ripple even in PFM mode

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NCP1521BSNT1G

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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 3.3

0.6

96

1500

Price N/A

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Die Related Summary Data

Device: NCP1521BSNT1G

Equivalent to wafer fab process: CMOS STD

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等效器件小时

平均故障间隔时间/平均无故障时间（按小时计算）

FITS

CMOS STD

3

3597164517

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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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