Datasheet > NCP1578

NCP1578

更新时间： 2024-09-20 04:37:59

品牌	Logo	应用领域
安森美 - ONSEMI		稳压器控制器
页数	文件大小	规格书
22页	1864K
描述
Synchronous Step-Down Controller with 50 mA Linear Regulator

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NCP1578 数据手册

NCP1578

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Synchronous Step-Down

Controller with 50 mA

Linear Regulator

http://onsemi.com

The NCP1578 is a voltage mode synchronous step-down controller

for high performance systems intended to be used in battery-powered

systems. The NCP1578 includes a high efficiency PWM controller

with adjustable output, and a 5 V/50 mA linear regulator. A pin is

provided to enable or disable forced PWM mode of operation. An

internal power good voltage monitor tracks the SMPS output.

NCP1578 also features soft-start sequence, UVLO for linear regulator

and switcher, overvoltage protection, overcurrent protection, and

thermal shutdown. The IC is packaged in QFN20.

QFN20

MN SUFFIX

CASE 485E

MARKING DIAGRAM

Features

•ꢀFixed 5.0 V/50 mA Internal Linear Regulator

•ꢀAdjustable PWM Output Voltage

N1578

ALYWG

•ꢀ1.5% Accuracy 0.8 V Reference

•ꢀ4.5 V to 24 V Battery/Adaptor Voltage Range

•ꢀSelectable Force PWM Mode

N1578 = Specific Device Code

= Assembly Location

= Wafer Lot

= Year

= Work Week

= Pb-Free Package

•ꢀLossless, Programmable High Side MOSFET's R

Current

DS(ON)

Sensing

•ꢀSoft-start and Power-Up Sequencing

•ꢀOvervoltage Protection, Undervoltage Protection

•ꢀProgrammable Delay Power Good Output

•ꢀThermal Shutdown

(Note: Microdot may be in either location)

PIN CONNECTIONS

•ꢀHoused in QFN20

•ꢀThis is a Pb-Free Device

Typical Applications

•ꢀNetwork HUB, Switchers and Routers

FPWM

EN_LDO

OCSET

FOFF

PGND

PGDLY

PGOOD

•ꢀ3-Cell and 4-Cell Li-ion Battery-Powered Devices

•ꢀPersonal Computer Peripherals

•ꢀMicroprocessors Power Supply

•ꢀEmbedded Controller

EN_SW

COMP

•ꢀDSP and Core Processor

•ꢀSupply for LCD Display

ORDERING INFORMATION

Device

Package

Shipping

NCP1578MNR2G

QFN20

(Pb-Free)

4000/Tape & Reel

†For information on tape and reel specifications,

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specification

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.

October, 2007 - Rev. P2

Publication Order Number:

NCP1578/D

12 3 4 5 6 7...22

中文翻译

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与NCP1578相关器件

型号	品牌	获取价格	描述	数据表
NCP1578MNR2G	ONSEMI	获取价格	Synchronous Step-Down Controller with 50 mA Linear Regulator
NCP1579	ONSEMI	获取价格	Low Voltage Synchronous Buck Controller
NCP1579DR2G	ONSEMI	获取价格	Low Voltage Synchronous Buck Controller
NCP1580	ONSEMI	获取价格	Low Voltage Synchronous Buck Controller
NCP1580DR2	ONSEMI	获取价格	Low Voltage Synchronous Buck Controller
NCP1580DR2G	ONSEMI	获取价格	Low Voltage Synchronous Buck Controller
NCP1581	ONSEMI	获取价格	High Frequency Synchronous Step Down PWM Controller for Tracking Applications
NCP1581DR2G	ONSEMI	获取价格	High Frequency Synchronous Step Down PWM Controller for Tracking Applications
NCP1582	ONSEMI	获取价格	Low Voltage Synchronous Buck Controllers
NCP1582A	ONSEMI	获取价格	Low Voltage Synchronous Buck Controllers

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