Converters | NCP1422

升压转换器，同步整流，PFM，DC-DC，800 mA，带真切断和振荡消除器

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NCP1422 是一款单片微功率高频步升开关转换器 IC，专门设计用于负载高达 800mA 的电池供电手持电子产品。它集成了同步整流，从而提高能效，且无需外部肖特基二极管。高开关频率（可达 1.2 MHz），支持使用薄型、小尺寸的电感器和输出电容。禁用此器件时，LX 或 BAT 到 OUT 的内部传导路径完全阻断，OUT 引脚与电池隔离。真切断功能降低了关断电流，通常只有 50nA。还集成了振荡消除器，以消除非连续传导模式下的高频振铃。此外，电池电量低检测器、逻辑控制关断、逐周期电流限制和高温关断为各种电池供电应用提供了增值功能。上述功能全部打开时，静态电源电流通常仅为 8.5 μA。该器件采用紧凑、薄型 DFN10 封装。

  • Personal Digital Assistants (PDA)
  • Handheld Digital Audio Products
  • Camcorders and Digital Still Cameras
  • Conversion from one to two Alkaline, NiMH, NiCd battery cells to 3.0-5.0V or one Lithium-ion cells to 5.0V
  • While LED Flash for Digital Cameras

  • Output Current up to 800 mA at VIN = 2.5 V and VOUT = 3.3 V
  • High Switching Frequency, up to 1.2MHz
  • Anti-Ringing Ring-Killer for Discontinuous Conduction Mode
  • Low Quiescent Current of 8.5 µA
  • 1.0V Startup at No Load Guaranteed
  • Output Voltage from 1.5V to 5V Adjustable
  • 1.5A Cycle by Cycle Current Limit
  • On Chip Thermal Shutdown with Hysteresis
  • Housed in Space-Saving and Low Profile DFN10 package
  • Pb-Free Package is Available

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NCP1422MNR2G

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CAD Model

Pb

A

H

P

DFN-10

485C

1

260

REEL

3000

Y

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1

5.5

1.5 to 5.0

0.8

Up to 94

1200

$0.6127

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可靠性数据

Die Related Summary Data

Device: NCP1422MNR2G

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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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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