Datasheet > NCP1579

NCP1579

更新时间： 2024-11-20 05:52:03

品牌	Logo	应用领域
安森美 - ONSEMI		控制器
页数	文件大小	规格书
11页	145K
描述
Low Voltage Synchronous Buck Controller

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NCP1579 数据手册

NCP1579

Low Voltage Synchronous

Buck Controller

The NCP1579 is a low cost PWM controller designed to operate

from a 5 V or 12 V supply. This device is capable of producing an

output voltage as low as 0.8 V. This 8−pin device provides an optimal

level of integration to reduce size and cost of the power supply. The

NCP1579 provides a 1 A gate driver design and an internally set

275 kHz oscillator. In addition to the 1 A gate drive capability, other

efficiency enhancing features of the gate driver include adaptive

non−overlap circuitry. The device also incorporates an externally

compensated error amplifier and a capacitor programmable soft−start

function. Protection features include programmable short circuit

protection and undervoltage lockout (UVLO). The NCP1579 comes in

an 8−pin SOIC package.

http://onsemi.com

MARKING DIAGRAM

SOIC−8

D SUFFIX

CASE 751

1579

ALYW

1579 = Specific Device Code

Features

= Assembly Location

= Wafer Lot

• Input Voltage Range from 4.5 to 13.2 V

• 275 kHz Internal Oscillator

• Boost Pin Operates to 30 V

• Voltage Mode PWM Control

• 0.8 V 2.0 % Internal Reference Voltage

• Adjustable Output Voltage

= Year

= Work Week

= Pb−Free Device

PIN CONNECTIONS

• Capacitor Programmable Soft−Start

• Internal 1 A Gate Drivers

BST

PHASE

COMP/DIS

GND

• 80% Max Duty Cycle

• Input Under Voltage Lockout

• Programmable Current Limit

• This is a Pb−Free Device

(Top View)

Applications

• STB

ORDERING INFORMATION

• Blue−Ray DVD

• LCD_TV

†

Device

NCP1579DR2G

Package

Shipping

SOIC−8

2500/Tape & Reel

• DSP & FPGA Power Supply

• DC−DC Regulator Modules

(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.

Publication Order Number:

September, 2008 − Rev. 0

NCP1579/D

12 3 4 5 6 7...11

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