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ADP3419
Dual Bootstrapped, High
Voltage MOSFET Driver
with Output Disable
The ADP3419 is a dual MOSFET driver optimized for driving two
N-channel switching MOSFETs in nonisolated synchronous buck
power converters used to power CPUs in portable computers. The
driver impedances have been chosen to provide optimum performance
in multiphase regulators at up to 25 A per phase. The high-side driver
http://onsemi.com
can be bootstrapped relative to the switch node of the buck converter
and is designed to accommodate the high voltage slew rate associated
with floating high-side gate drivers.
The ADP3419 includes an anticross-conduction protection circuit,
undervoltage lockout to hold the switches off until the driver has
sufficient voltage for proper operation, a crowbar input that turns on
1
MSOP ? 10
CASE 846AC
the low-side MOSFET independently of the input signal state, and a
low-side MOSFET disable pin to provide higher efficiency at light
loads. The SD pin shuts off both the high-side and the low-side
MOSFETs to prevent rapid output capacitor discharge during system
shutdown.
The ADP3419 is specified over the extended commercial
temperature range of 0 ° C to 100 ° C and is available in a 10-lead MSOP
package.
FEATURES
MARKING DIAGRAM
10
P9x
RYW G
G
1
P9x = Device Code
x = A or B
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?
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All-In-One Synchronous Buck Driver
One PWM Signal Generates Both Drives
Anticross-Conduction Protection Circuitry
Output Disable Function
Crowbar Control
Synchronous Override Control
Undervoltage Lockout
Pb ? Free Package is Available
R = Assembly Location
Y = Year
W = Work Week
G = Pb ? Free Package
(Note: Microdot may be in either location)
PIN ASSIGNMENT
IN 1                          10 BST
APPLICATIONS
? Mobile Computing CPU Core Power Converters
? Multiphase Desk-Note CPU Supplies
? Single-Supply Synchronous Buck Converters
? Non-Synchronous-to-Synchronous Drive Conversion
SD 2
DRVLSD 3
CROWBAR 4
VCC 5
ADP3419
(Top View)
9
8
7
6
DRVH
SW
GND
DRVL
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 9 of this data sheet.
? Semiconductor Components Industries, LLC, 2010
April, 2010 ? Rev. 3
1
Publication Order Number:
ADP3419/D
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