NCP5351
4 A Synchronous Buck
Power MOSFET Driver
The NCP5351 is a dual MOSFET gate driver optimized to drive the
gates of both high鈥?and low鈥搒ide Power MOSFETs in a Synchronous
Buck converter. The NCP5351 is an excellent companion to
multiphase controllers that do not have integrated gate drivers, such as
ON Semiconductor鈥檚 CS5323, CS5305 or CS5307. This architecture
provides a power supply designer the flexibility to locate the gate
drivers close to the MOSFETs.
4 Amp drive capability makes the NCP5351 ideal for minimizing
switching losses in MOSFETs with large input capacitance. Optimized
internal, adaptive nonoverlap circuitry further reduces switching
losses by preventing simultaneous conduction of both MOSFETs.
The floating top driver design can accommodate MOSFET drain
voltages as high as 25 V. Both gate outputs can be driven low, and
supply current reduced to less than 25
碌A(chǔ),
by applying a low logic
level to the Enable (EN) 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 NCP5351 is pin鈥搕o鈥損in compatible with the SC1205 and is
available in a standard SO鈥? package.
Features
鈥?/div>
4 A Peak Drive Current
鈥?/div>
Rise and Fall Times < 15 ns Typical into 6000 pF
鈥?/div>
Propagation Delay from Inputs to Outputs < 20 ns
鈥?/div>
Adaptive Nonoverlap Time Optimized for Large Power MOSFETs
鈥?/div>
Floating Top Driver Accommodates Applications Up to 25 V
鈥?/div>
Undervoltage Lockout to Prevent Switching when the Input
Voltage is Low
鈥?/div>
Thermal Shutdown Protection Against Overtemperature
鈥?/div>
< 1 mA Quiescent Current 鈥?Enabled
鈥?/div>
25
碌A(chǔ)
Quiescent Current 鈥?Disabled
鈥?/div>
Internal TG to DRN Pulldown Resistor Prevents HV Supply鈥揑nduced
Turn On of High鈥揝ide MOSFET
http://onsemi.com
MARKING
DIAGRAM
1
SO鈥?
D SUFFIX
CASE 751
1
A
WL, L
YY, Y
WW, W
= Assembly Location
= Wafer Lot
= Year
= Work Week
8
5351
ALYW
8
PIN CONNECTIONS
DRN
TG
BST
CO
1
8
PGND
BG
V
S
EN
ORDERING INFORMATION
Device
NCP5351D
NCP5351DR2
Package
SO鈥?
SO鈥?
Shipping
98 Units/Rail
2500 Tape & Reel
錚?/div>
Semiconductor Components Industries, LLC, 2002
1
December, 2002 鈥?Rev. 7
Publication Order Number:
NCP5351/D
NCP5351/D相關(guān)型號(hào)PDF文件下載
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