NCP1597BMNTXG ONSEMI [ON Semiconductor], NCP1597BMNTXG Datasheet

NCP1597BMNTXG

Manufacturer Part Number

NCP1597BMNTXG

Description

1 MHz, 2 A Synchronous Buck Regulator

Manufacturer

ONSEMI [ON Semiconductor]

Datasheet

1.NCP1597BMNTXG.pdf (9 pages)

Current page: 1 of 9
Download datasheet (169Kb)

NCP1597B

Product Preview

1 MHz, 2 A Synchronous

Buck Regulator

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.

frequency (F

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

maximum.

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

thermal shutdown.

Features

•

Applications

•

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

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

October, 2009 − Rev. P0

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

The NCP1597B has features including fixed internal switching

Other features include cycle−by−cycle current limiting;

90 mW Low−Side N−Channel MOSFET

Input Voltage Range: from 4.0 V to 5.5 V

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

Fixed 1 MHz Switching Frequency

Cycle−by−Cycle Current Limiting

Overtemperature Protection

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

DSP Power

Hard Disk Drivers

Computer Peripherals

Home Audio

Set−Top Boxes

Networking Equipment

LCD TV

Wireless and DSL/Cable Modem

USB Power Devices

), and an internal soft−start to limit inrush current.

†For information on tape and reel specifications,

NCP1597BMNTWG

NCP1597BMNTXG

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specifications

Brochure, BRD8011/D.

Device

(Note: Microdot may be in either location)

AGND 4

VCCP

CASE 485C

VCC

1597B

ORDERING INFORMATION

DFN10

FB 5

PIN CONNECTIONS

http://onsemi.com

= Specific Device Code

= Assembly Location

= Wafer Lot

= Year

= Work Week

= Pb−Free Package

(Top View)

(Pb−Free)

Package

DFN10

Publication Order Number:

MARKING

DIAGRAM

ALYWG

1597B

PGND

3000 / Tape &

Shipping

NCP1597B/D

Reel

†

Related parts for NCP1597BMNTXG

NCP1597BMNTXG Summary of contents

Page 1

... AGND (Top View) ORDERING INFORMATION Device Package NCP1597BMNTWG DFN10 (Pb−Free) NCP1597BMNTXG DFN10 (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. 1 Publication Order Number: MARKING DIAGRAM ...

Page 2

NCP1597B VCC Power Reset UVLO EN THD Hiccup Soft−Start + gm Vref + FB − AGND PIN DESCRIPTIONS Pin No Symbol 1 EN Logic input to enable the part. Logic high turns on the part and a logic low disables ...

Page 3

V in 4.0 V − 5.5 V ABSOLUTE MAXIMUM RATINGS Rating Power Supply Pin (Pin GND LX to GND All other pins Operating Temperature Range Junction Temperature Storage Temperature Range Pkg Power Dissipation (T = +25°C) A ...

Page 4

ELECTRICAL CHARACTERISTICS (V = 4.0 V − +25°C for typical value; −40°C < out J Parameter V Input Voltage Range in V UVLO Threshold CC UVLO Hysteresis V Quiescent Current ...

Page 5

Overview The NCP1597B is a synchronous PWM controller that incorporates all the control and protection circuitry necessary to satisfy a wide range of applications. The NCP1597B employs current mode control to provide fast transient response, simple compensation, and excellent stability. ...

Page 6

Undervoltage Lockout (UVLO) The under voltage lockout feature prevents the controller from switching when the input voltage is too low to power the internal power supplies and reference. Hysteresis must be incorporated in the UVLO comparator to prevent IxR drops ...

Related keywords

NCP1597BMNTXG datasheet
NCP1597BMNTXG data sheet
NCP1597BMNTXG pdf datasheet
NCP1597BMNTXG component
NCP1597BMNTXG part
NCP1597BMNTXG distributor
NCP1597BMNTXG RoHS
NCP1597BMNTXG datasheet download

NCP1597BMNTXG ONSEMI [ON Semiconductor], NCP1597BMNTXG Datasheet

NCP1597BMNTXG

Related parts for NCP1597BMNTXG

NCP1597BMNTXG Summary of contents

Page 1

Page 2

Page 3

Page 4

Page 5

Page 6

Page 7

Page 8

Page 9

Related keywords