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ADP3419

Description
Dual Bootstrapped, High Voltage MOSFET Driver with Output Disable
File Size150KB,10 Pages
ManufacturerON Semiconductor
Websitehttp://www.onsemi.cn
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ADP3419 Overview

Dual Bootstrapped, High Voltage MOSFET Driver with Output Disable

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
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
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
http://onsemi.com
1
MSOP−10
CASE 846AC
MARKING DIAGRAM
10
P9x
RYWG
G
1
P9x = Device Code
x = A or B
R
= Assembly Location
Y
= Year
W = Work Week
G
= Pb−Free Package
(Note: Microdot may be in either location)
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
PIN ASSIGNMENT
IN
1
SD
2
10
BST
9
APPLICATIONS
DRVLSD
3
CROWBAR
4
VCC
5
ADP3419
(Top View)
DRVH
SW
GND
DRVL
8
7
6
Mobile Computing CPU Core Power Converters
Multiphase Desk-Note CPU Supplies
Single-Supply Synchronous Buck Converters
Non-Synchronous-to-Synchronous Drive Conversion
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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