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NCP3011

更新时间： 2024-12-01 05:52:03
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安森美 - ONSEMI 控制器
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1页 63K
描述
Synchronous PWM Controller

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NCP3011 数据手册

  
NCP3011  
Product Preview  
Synchronous PWM Controller  
The NCP3011 is a PWM device designed to operate from a wide  
input range and is capable of producing an output voltage as low as  
0.8 V. The NCP3011 provides a 1.0 A gate driver and an internally set  
400 kHz oscillator. The NCP3011 has an externally compensated  
transconductance error amplifier with an internally fixed softꢀstart.  
The NCP3011 incorporates output voltage monitoring with a Power  
Good pin to indicate that the system is in regulation. The dual function  
SYNC pin synchronizes the device to a higher frequency (Slave  
Mode) or outputs a 180° outꢀofꢀphase clock signal to drive another  
NCP3011 (Master Mode). Protection features include lossless current  
limit and Short Circuit Protection, Output Overvoltage and  
Undervoltage Protection, and Input Undervoltage Lockout. The  
NCP3011 is available in a 14ꢀpin TSSOP package.  
http://onsemi.com  
14  
1
TSSOPꢀ14  
DT SUFFIX  
CASE 948G  
Features  
• Input Voltage Range from 4.5 V to 28 V  
• 400 kHz Operation  
MARKING DIAGRAM  
• 0.8 $1.0% Reference Voltage  
• Buffered External +1.25 V Reference  
• Current Limit and Short Circuit Protection  
• Power Good  
14  
NCP3011  
ALYW  
1
• Enable/Disable Pin  
NCP3011 = Device Code  
• Input and Output Voltage Protection  
• External Synchronization  
A
L
Y
W
= Assembly Location  
= Wafer Lot  
= Year  
• Output Overvoltage and Undervoltage Protection  
• This is a PbꢀFree Device  
= Work Week  
Typical Applications  
PIN CONNECTIONS  
• Set Top Box  
VREF  
VCC  
BST  
• Power Modules  
EN  
NC  
• ASIC / DSP Power Supply  
HSDR  
VSW  
NC  
VIN  
4.5 ꢀ 28 V  
SYNC  
PG  
C
BST  
CIN  
BST  
VCC  
COMP  
FB  
LSDR  
GND  
Q1  
Q2  
EN  
HSDR  
LO  
V
OUT  
(TOP VIEW)  
VSW  
LSDR  
GND  
FB  
PG  
R
FB1  
VREF  
SYNC  
C
O
R
ISET  
ORDERING INFORMATION  
Device Package Shipping  
NCP3011DTBR2G TSSOPꢀ14  
R
FB2  
†
R
COMP  
REF  
(PbꢀFree) 2500/Tape&Reel  
C
REF  
R
C
C
C1  
C
C2  
†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.  
Figure 1. Typical Application Circuit  
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:  
October, 2009 ꢀ Rev. P1  
NCP3011/D  
1

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