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NCP3418B Datenblatt(Datasheet) 1 Page - ON Semiconductor

Teile-Nr. NCP3418B
Beschreibung  MOSFET Driver with Dual Outputs for Synchronous Buck Converters
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Hersteller  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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© Semiconductor Components Industries, LLC, 2006
March, 2006 − Rev. 5
1
Publication Order Number:
NCP3418B/D
NCP3418B
MOSFET Driver with Dual
Outputs for Synchronous
Buck Converters
The NCP3418B is a single Phase 12 V MOSFET gate driver
optimized to drive the gates of both high−side and low−side power
MOSFETs in a synchronous buck converter. The high−side and
low−side driver is capable of driving a 3000 pF load with a 25 ns
propagation delay and a 20 ns transition time.
With a wide operating voltage range, high or low side MOSFET
gate drive voltage can be optimized for the best efficiency. Internal
adaptive nonoverlap circuitry further reduces switching losses by
preventing simultaneous conduction of both MOSFETs.
The floating top driver design can accommodate VBST voltages as
high as 30 V, with transient voltages as high as 35 V. Both gate outputs
can be driven low by applying a low logic level to the Output Disable
(OD) pin. An Undervoltage Lockout function ensures that both driver
outputs are low when the supply voltage is low, and a Thermal
Shutdown function provides the IC with overtemperature protection.
The NCP3418B is pin−to−pin compatible with Analog Devices
ADP3418 with the following advantages:
Features
Faster Rise and Fall Times
Thermal Shutdown for System Protection
Internal Pulldown Resistor Suppresses Transient Turn On of Either
MOSFET
Anti Cross−Conduction Protection Circuitry
Floating Top Driver Accommodates Boost Voltages of up to 30 V
One Input Signal Controls Both the Upper and Lower Gate Outputs
Output Disable Control Turns Off Both MOSFETs
Complies with VRM10.x and VRM11.x Specifications
Undervoltage Lockout
Thermal Shutdown
Thermally Enhanced Package Available
These are Pb−Free Devices
Device
Package
Shipping
ORDERING INFORMATION
SO−8
(Pb−Free)
2500 Tape & Reel
NCP3418BDR2G
A = Assembly Location
L
= Wafer Lot
Y = Year
W = Work Week
G = Pb−Free Package
MARKING
DIAGRAMS
PIN CONNECTIONS
SO−8
D SUFFIX
CASE 751
1
8
DRVL
VCC
18
PGND
OD
SWN
IN
DRVH
BST
http://onsemi.com
†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.
3418B
ALYW
G
1
8
DFN−10
MN SUFFIX
CASE 485C
DFN−10
(Pb−Free)
3000 Tape & Reel
NCP3418BMNR2G
PGND
VCC
PGND
OD
SWN
IN
DRVH
BST
DRVL
VCC
(Top View)
110
3418B
ALYW
G




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