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參數資料
| 型號： | NCP5211DR2G |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩壓器 |
| 英文描述： | Low Voltage Synchronous Buck Controller |
| 中文描述： | 1 A SWITCHING CONTROLLER, 900 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封裝： | LEAD FREE, SOIC-14 |
| 文件頁數： | 1/13頁 |
| 文件大小： | 132K |
| 代理商： | NCP5211DR2G |
Semiconductor Components Industries, LLC, 2006
April, 2006 Rev. 0
1
Publication Order Number:
NCP5211/D
NCP5211
Low Voltage Synchronous
Buck Controller
The NCP5211 is a low voltage synchronous buck controller. It
contains all required circuitry for a synchronous buck converter using
external NChannel MOSFETs. High current internal gate drivers are
capable of driving high gate capacitance of low R
DS(on)
NFETs for
better efficiency. The NCP5211 is in a 14pin package to allow the
designer added flexibility.
The NCP5211 provides overcurrent protection, undervoltage
lockout, SoftStart and built in adaptive nonoverlap. The NCP5211
also provides adjustable fixed frequency range of 150 kHz to 750 kHz.
This gives the designer more flexibility to make efficiency and
component size compromises. The NCP5211 will operate over a 4.5 V
to 14 V range using either single or dual input voltage.
Features
Switching Regulator Controller
NChannel Synchronous Buck Design
V
2
Control Topology
200 ns Transient Response
Programmable Fixed Frequency of 150 kHz750 kHz
1.0 V 1.5% Internal Reference
Lossless Inductor Sensing Overcurrent Protection
Hiccup Mode Short Circuit Protection
Programmable SoftStart
40 ns GATE Rise and Fall Times (3.3 nF Load)
70 ns Adaptive FET Nonoverlap Time
Differential Remote Sense Capability
System Power Management
5.0 V or 12 V Operation
Undervoltage Lockout
On/Off Control Through Use of the COMP Pin
PbFree Packages are Available*
*For additional information on our PbFree strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
MARKING
DIAGRAM
1
GATE(L)
V
C
PGND
SGND
V
FB
GATE(H)
IS+
IS
V
CC
R
OSC
PIN CONNECTIONS
BST
LGND
V
FFB
COMP
SOIC14
D SUFFIX
CASE 751A
http://onsemi.com
NCP5211xG
AWLYWW
1
14
NCP5211x = Specific Device Code
A
= Assembly Location
WL
= Wafer Lot
Y
= Year
WW
= Work Week
G
= PbFree Package
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
ORDERING INFORMATION
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