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NCP3011, NCV3011
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 integrated gate drivers and an internally
set 400 kHz oscillator. The NCP3011 has an externally compensated
transconductance error amplifier with an internally fixed soft ? start.
The NCP3011 incorporates output voltage monitoring with a Power
Good pin to indicate that the system is in regulation. The dual function
http://onsemi.com
SYNC pin synchronizes the device to a higher frequency (Slave
Mode) or outputs a 180 ° out ? of ? phase 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 14 ? pin TSSOP package.
14
1
TSSOP ? 14
DT SUFFIX
CASE 948G
Features
? Input Voltage Range from 4.7 V to 28 V
? 400 kHz Operation
? 0.8 V $ 1.0% Reference Voltage
? Buffered External +1.25 V Reference
? Current Limit and Short Circuit Protection
? Power Good
? Enable/Disable Pin
? Input Undervoltage Lockout
? External Synchronization
? Output Overvoltage and Undervoltage Protection
? NCV Prefix for Automotive and Other Applications Requiring Site
and Change Controls
? This is a Pb ? Free Device
MARKING DIAGRAM
14
3011
ALYW G
G
1
3011= Device Code
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb ? Free Package
(Note: Microdot may be in either location)
PIN CONNECTIONS
Typical Applications
? Set Top Box
? Power Modules
? ASIC / DSP Power Supply
VIN
CBST
VREF
EN
NC
SYNC
PG
COMP
FB
VCC
BST
HSDR
VSW
NC
LSDR
GND
CIN
EN
PG
VCC
BST
HSDR
VSW
Q1
LO
VOUT
(TOP VIEW)
ORDERING INFORMATION
VREF
SYNC
LSDR
GND
R ISET
Q2
RFB1
RFB2
CO
Device Package Shipping ?
NCP3011DTBR2G TSSOP ? 14 2500 / Tape & Reel
(Pb ? Free)
RREF
COMP
FB
NCV3011DTBR2G TSSOP ? 14 2500 / Tape & Reel
(Pb ? Free)
CREF
RC
C C1
CC2
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.
? Semiconductor Components Industries, LLC, 2011
June, 2011 ? Rev. 3
1
Publication Order Number:
NCP3011/D
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相关代理商/技术参数
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