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NCP5211ADR2 Datasheet(PDF) 1 Page - ON Semiconductor

Part # NCP5211ADR2
Description  Low Voltage Synchronous Buck Controller
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

NCP5211ADR2 Datasheet(HTML) 1 Page - ON Semiconductor

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© Semiconductor Components Industries, LLC, 2003
December, 2003 − Rev. 3
1
Publication Order Number:
NCP5211A/D
NCP5211A
Low Voltage Synchronous
Buck Controller
The NCP5211A is a low voltage synchronous buck controller. It
contains all required circuitry for a synchronous buck converter using
external N−Channel MOSFETs. High current internal gate drivers are
capable of driving low RDS(on) NFETs for better efficiency. The
NCP5211A is in a 14 pin package to minimize PCB area.
The NCP5211A provides overcurrent protection, undervoltage
lockout, soft start and built in adaptive nonoverlap. The NCP5211A is
adjustable over a frequency range of 150 kHz to 750 kHz. This gives
the designer more flexibility to make efficiency and component size
compromises. The NCP5211A will operate on a single supply or a
separate boost supply.
Features
Switching Regulator Controller
N−Channel Synchronous Buck Design
1.0 Amp Gate Drive Capability
200 ns Transient Response
Programmable Operating Frequency of 150 kHz−750 kHz
0.8 V 1% Internal Reference
Lossless Inductor Sensing Overcurrent Protection
Cycle−by−Cycle Short Circuit Protection
Programmable Soft Start
40 ns GATE Rise and Fall Times (3.3 nF Load)
70 ns Adaptive FET Nonoverlap Time
Differential Remote Sense Capability
System Power Management
Operation with a Conversion Rail of 5.0 V or 12 V
Undervoltage Lockout
On/Off Control Through Use of the COMP Pin
Max Duty Cycle Clamped to 70% for Forward Converter Control
Applications
Set Top Devices
Forward Converters
Buck Converters
Point of Load Regulation
MARKING
DIAGRAM
B
= Assembly Location
WL = Wafer Lot
Y
= Year
WW = Work Week
1
GATE(L)
PGND
SGND
VFB
GATE(H)
IS+
IS−
ROSC
VCC
PIN CONNECTIONS
VC
BST
LGND
VFFB
COMP
SOIC−14
D SUFFIX
CASE 751A
1
14
NCP5211A
BWLYWW
http://onsemi.com
Device
Package
Shipping†
ORDERING INFORMATION
NCP5211AD
SO−14
55 Units/Rail
NCP5211ADR2
SO−14
2500 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.


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