Datasheet > 电源电路 > 开关式稳压器或控制器> NCP1597BMNTXG

NCP1597BMNTXG

更新时间： 2024-11-08 11:56:35

品牌	Logo	应用领域
安森美 - ONSEMI		稳压器
页数	文件大小	规格书
9页	157K
描述
1 MHz, 2 A Synchronous Buck Regulator

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NCP1597BMNTXG 数据手册

NCP1597B

Product Preview

1 MHz, 2 A Synchronous

Buck Regulator

The NCP1597B is a fixed 1 MHz, high−output−current,

synchronous PWM converter that integrates a low−resistance,

high−side P−channel MOSFET and a low−side N−channel MOSFET.

The NCP1597B utilizes current mode control to provide fast transient

response and excellent loop stability. It regulates input voltages from

4.0 V to 5.5 V down to an output voltage as low as 0.8 V and is able to

supply up to 2 A.

The NCP1597B has features including fixed internal switching

frequency (F^SW), and an internal soft−start to limit inrush current.

Using the EN pin, shutdown supply current is reduced to 3 mA

maximum.

http://onsemi.com

MARKING

DIAGRAM

1597B

ALYWG

DFN10

CASE 485C

1597B = Specific Device Code

= Assembly Location

= Wafer Lot

= Year

= Work Week

= Pb−Free Package

Other features include cycle−by−cycle current limiting;

short−circuit protection, low dropout mode, power saving mode and

thermal shutdown.

Features

(Note: Microdot may be in either location)

• Input Voltage Range: from 4.0 V to 5.5 V

• Internal 140 mW High−Side Switching P−Channel MOSFET and

90 mW Low−Side N−Channel MOSFET

• Fixed 1 MHz Switching Frequency

• Cycle−by−Cycle Current Limiting

• Overtemperature Protection

PIN CONNECTIONS

VCC

10 PGND

PGND

VCCP

AGND

8 LX

7 LX

6 NC

• Internal Soft−Start

• Start−up with Pre−Biased Output Load

• Adjustable Output Voltage Down to 0.8 V

• Power Saving Mode During Light Load

• Low Dropout Mode Operation to Extend the Battery Life

• These are Pb−Free Devices

(Top View)

ORDERING INFORMATION

†

Device

Package

Shipping

NCP1597BMNTWG DFN10

3000 / Tape &

Reel

Applications

• DSP Power

• Hard Disk Drivers

• Computer Peripherals

• Home Audio

• Set−Top Boxes

• Networking Equipment

• LCD TV

• Wireless and DSL/Cable Modem

• USB Power Devices

(Pb−Free)

NCP1597BMNTXG

DFN10

3000 / Tape &

Reel

(Pb−Free)

†For information on tape and reel specifications,

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specifications

Brochure, BRD8011/D.

This document contains information on a product under development. ON Semiconductor

reserves the right to change or discontinue this product without notice.

Publication Order Number:

October, 2009 − Rev. P0

NCP1597B/D

12 3 4 5 6 7...9

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