ADP3629 データシートの表示（PDF） - Analog Devices

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ADP3629

High Speed, Dual, 2 A MOSFET Driver

Analog Devices 

FEATURES

Industry-standard-compatible pinout

High current drive capability

Precise threshold shutdown comparator

UVLO with hysteresis

Overtemperature warning signal

Overtemperature shutdown

3.3 V-compatible inputs

Rise time and fall time: 10 ns typical at 2.2 nF load

Fast propagation delay

Matched propagation delays between channels

Supply voltage: 9.5 V to 18 V

Dual outputs can be operated in parallel

(ADP3629/ADP3630)

Rated from −40°C to +85°C ambient temperature

8-lead SOIC_N and 8-lead MSOP

APPLICATIONS

AC-to-DC switch mode power supplies

DC-to-DC power supplies

Synchronous rectification

Motor drives

High Speed, Dual, 2 A MOSFET Driver

ADP3629/ADP3630/ADP3631

GENERAL DESCRIPTION

The ADP3629/ADP3630/ADP3631 are dual, high current, high

speed drivers, capable of driving two independent N-channel

power MOSFETs. The ADP3629/ADP3630/ADP3631 use the

industry-standard footprint but add high speed switching per-

formance and improved system reliability.

The ADP3629/ADP3630/ADP3631 have an internal temperature

sensor and provide two levels of overtemperature protection: an

overtemperature warning and an overtemperature shutdown at

extreme junction temperatures.

The SD function, generated from a precise internal comparator,

provides fast system enable or shutdown. This feature allows

redundant overvoltage protection, complementing the protec-

tion inside the main controller device, or provides safe system

shutdown in the event of an overtemperature warning.

The wide input voltage range allows the driver to be compatible

with both analog and digital PWM controllers.

Digital power controllers are supplied from a low voltage supply,

and the driver is supplied from a higher voltage supply. The

ADP3629/ADP3630/ADP3631 add UVLO and hysteresis func-

tions, allowing safe startup and shutdown of the higher voltage

supply when used with low voltage digital controllers.

FUNCTIONAL BLOCK DIAGRAM

VDD

ADP3629/ADP3630/ADP3631

SD 1

INA, 2

INA

PGND 3

INB, 4

INB

VEN

NONINVERTING

INVERTING

NONINVERTING

INVERTING

OVERTEMPERATURE

PROTECTION

VDD

8 OTW

7 OUTA

UVLO

6 VDD

5 OUTB

Figure 1.

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

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Tel: 781.329.4700

www.analog.com

Fax: 781.461.3113

©2009 Analog Devices, Inc. All rights reserved.

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