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NCP3020B

更新时间： 2024-12-01 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
23页 523K
描述
Synchronous PWM Controller

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NCP3020B 数据手册

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NCP3020A, NCP3020B  
Product Preview  
Synchronous PWM Controller  
The NCP3020 is a PWM device designed to operate from a wide  
input range and is capable of producing an output voltage as low as  
0.6 V. The NCP3020A provides integrated gate drivers and an  
internally set 300 kHz oscillator (600 kHz for the NCP3020B). The  
NCP3020 has an externally compensated transconductance error  
amplifier with an internally fixed soft−start. Protection features  
include lossless current limit and Short Circuit Protection, Output  
Overvoltage protection, Output Undervoltage protection, and Input  
Undervoltage Lockout. The NCP3020 is currently available in a  
SOIC−8 package.  
http://onsemi.com  
8
1
SOIC−8 NB  
CASE 751  
Features  
• Input Voltage Range from 4.5 V to 28 V  
• Switching and Synchronous Rectifier Drives with >1.0 A Capability  
• 300 kHz Operation (NCP3020B – 600 kHz)  
• 0.6 1.0% Reference Voltage  
• Internally Programmed 6.8 ms Soft−Start (NCP3020B – 3.4 ms)  
• Current Limit and Short Circuit Protection  
• Transconductance Amplifier with External Compensation  
• Input Undervoltage Lockout  
• Output Overvoltage and UndervoltageDetection  
• This is a Pb−Free Device  
MARKING DIAGRAM  
8
XXXXX  
ALYW  
G
1
XXXXX = Specific Device Code  
A
L
Y
W
G
= Assembly Location  
= Wafer Lot  
= Year  
= Work Week  
= Pb−Free Package  
4.5−28 V  
PIN CONNECTIONS  
C
IN  
BST  
V
CC  
C
BST  
COMP  
FB  
HSDR  
VSW  
VCC BST  
HSDR  
Q1  
GND  
LSDR  
L
0
Vout  
COMP  
FB  
VSW  
ORDERING INFORMATION  
R
R
FB1  
FB2  
C
Q2  
R
C1  
C
†
LSDR  
GND  
Device  
Package  
Shipping  
C
0
C
C2  
NCP3020ADR2G  
SOIC−8 2500 / Tape & Reel  
(Pb−Free)  
R
ISET  
NCP3020BDR2G  
SOIC−8 2500 / Tape & Reel  
(Pb−Free)  
Figure 1. Typical Application Circuit  
†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.  
© Semiconductor Components Industries, LLC, 2009  
1
Publication Order Number:  
November, 2009 − Rev. P1  
NCP3020/D  
1234567...23

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