NCP1597A

更新时间： 2024-09-20 11:52:27

品牌	Logo	应用领域
安森美 - ONSEMI		稳压器
页数	文件大小	规格书
13页	338K
描述
1 MHz, 2.0 A Synchronous Buck Regulator

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数据手册

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NCP1597A 数据手册

NCP1597A

1 MHz, 2.0 A Synchronous

Buck Regulator

The NCP1597A family are fixed 1 MHz, high−output−current,

synchronous PWM converters that integrate a low−resistance,

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

The NCP1597A 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 2.0 A.

http://onsemi.com

MARKING

DIAGRAM

The NCP1597A includes an internally fixed switching frequency

(F^SW), and an internal soft−start to limit inrush currents. Using the EN

pin, shutdown supply current is reduced to 3 mA maximum.

Other features include cycle−by−cycle current limiting,

short−circuit protection, power saving mode and thermal shutdown.

1597A

AYWWG

DFN6

CASE 506AH

= Assembly Location

= Year

= Work Week

Features

= Pb−Free Package

• 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

(Note: Microdot may be in either location)

PIN CONNECTIONS

GND

6 EN

• Internal Soft−Start

VCC

• Start−up with Pre−Biased Output Load

• Adjustable Output Voltage Down to 0.8 V

• Power Saving Mode During Light Load

• These are Pb−Free Devices

VCCP

ORDERING INFORMATION

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

†

Device

NCP1597AMNTWG

Package

Shipping

DFN6

(Pb−Free)

3000 / Tape &

Reel

†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.

Publication Order Number:

June, 2010 − Rev. 0

NCP1597/D

12 3 4 5 6 7...13

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