A1442EEWLT-P データシートの表示（PDF） - Allegro MicroSystems

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A1442EEWLT-P

Low Voltage Full Bridge Brushless DC Motor Driver with Hall Commutation and Soft Switching, and Reverse Battery, Short Circuit, and Thermal Shutdown Protection

Allegro MicroSystems 

A1442

Low Voltage Full Bridge Brushless DC Motor Driver

with Hall Commutation and Soft Switching,

and Reverse Battery, Short Circuit, and Thermal Shutdown Protection

Application Information

Two typical application circuits are shown in figures 4 and 5. The

first application circuit shows the device S¯¯L¯¯E¯¯E¯¯P pin controlled

by the user. Figure 5 illustrates an application circuit where the

device VDD and S¯¯L¯¯E¯¯E¯¯P pin are connected together.

Note that:

 No external diode is required for reverse battery protection

because the protection is fully integrated into the IC.

 Thermal shutdown is integrated also.

A bypass capacitor of 0.1 μF is required between VDD and GND

for proper device operation through the full specified supply volt-

age range.

VBATT

System Logic

Control

I/O

VDD

VOUT1

CBYP

A1442

SLEEP

VOUT2

M

NC

GND

Figure 4. Application circuit showing user-controlled sleep/enable mode, while the

A1442 remains powered at all times

VBATT

System Logic

Control

I/O

VDD

VOUT1

A1442

SLEEP

VOUT2

CBYP

M

NC

GND

Figure 4. Application circuit showing simultaneous user control of power supply and

sleep mode.

Allegro MicroSystems, Inc.

5

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

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