Converters | NCP1597B

同步降压转换器，1 MHz，2.0 A

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NCP1597B 为 1 MHz 固定频率、高输出电流、同步 PWM 转换器，集成了低电阻、高压侧 P 沟道 MOSFET 以及低压侧 N 沟道 MOSFET。 NCP1597B 利用电流模式控制提供了快速瞬变响应和卓越的环路稳定性。它将 4.0 V 至 5.5 V 的输入电压调节为低至 0.8 V 的输出电压，能够提供高达 2 A 的电流。 NCP1597B 具有固定内部开关频率 (FSW)、限制涌入电流的内部软启动等特性。 通过使用 EN 引脚，关断电源电流降至最大 3 µA。 其他特性包括按周期电流限制、短路保护、低漏模式、节电模式和高温关断。 对于 NCP1597A，该零件还采用 6 引脚 3x3mm DFN 封装。

  • +5V DC-DC Regulator

  • Set-Top-Box
  • LCD-TV / DTV / Plasma TV
  • USB Powered Devices

  • Input Voltage Range: from 4.0 V to 5.5 V
  • Internal 140 mΩ HighSide Switching P-FET and 90 mΩ Low-Side N-FET
  • Fixed 1 MHz Switching Frequency
  • Cycle-by-Cycle Current Limiting
  • Overtemperature Protection
  • Start-up with Pre-Biased Output Load
  • 0.8 V +/- 1.5% Reference Voltage
  • Power Saving Mode During Light Load

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NCP1597BMNTWG

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Lifetime

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CAD Model

Pb

A

H

P

DFN-10

485C

1

260

REEL

3000

N

Step-Down

Current Mode

4

5.5

0.8

2

90

1000

$0.3495

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Die Related Summary Data

Device: NCP1597BMNTWG

Equivalent to wafer fab process: ONC25

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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

ONC25

1

2712519294

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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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