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Part Number: ADP3419
Description: The ADP3419 is a dual MOSFET driver optimized for driving two N-channel switching MOSFETs in nonisolat...
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ADP3419
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General Description
ADP3419 General Description
The ADP3419 is a dual MOSFET driver optimized for driving two N-channel switching MOSFETs in nonisolated synchro-nous 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 ootstrapped 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.
ADP3419 Maximum Ratings
| Parameter | Rating |
| VCC | −0.3 V to +7 V |
| BST | −0.3 V to +30 V |
| BST to SW | −0.3 V to +7 V |
| SW | −3 V to +25 V |
| DRVH | SW − 0.3 V to BST + 0.3 V |
| DRVL | −0.3 V to VCC + 0.3 V |
| All Other Inputs and Outputs | −0.3 V to VCC + 0.3 V |
| JA | |
| 2-Layer Board | 340°C/W |
| 4-Layer Board | 220°C/W |
| Operating Ambient Temperature | |
| Range | 0°C to 100°C |
| Junction Temperature Range | 0°C to 150°C |
| Storage Temperature Range | −65°C to +150°C |
| Lead Temperature Range | |
| Soldering (10 s) | 300°C |
| Vapor Phase (60 s) | 215°C |
| Infrared (15 s) | 220°C |
Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those listed in the perational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Unless otherwise specified, all voltages are referenced to GND.
ADP3419 Features
·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
·One PWM signal generates both drives
·Anticross-conduction protection circuitry
·Output disable function
·Crowbar control
·Synchronous override control
·Undervoltage lockout
ADP3419 Typical Application
·Mobile computing CPU core power converters
·Multiphase desk-note CPU supplies
·Single-supply synchronous buck converters
·Nonsynchronous-to-synchronous drive conversion
·Multiphase desk-note CPU supplies
·Single-supply synchronous buck converters
·Nonsynchronous-to-synchronous drive conversion
ADP3419 Connection Diagram
ADP3419
PDF/DataSheet Download
- Datasheet: ADP3419
- File Size: 462956 KB
- Manufacturer: AD
- Click here to Download
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