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

Characteristic Performance

Total Output On-Resistance versus Supply Voltage

ILOAD = 150 mA

5.0

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

VDD (V)

Functional Description

Soft Switching The A1442 device includes a soft-switch-

ing algorithm that controls the output switching slew rate for

both output pins. As a result the A1442 device is ideal for use in

applications requiring low audible switching noise and low EMI

interference.

Sleep Mode The S¯¯L¯¯E¯¯E¯¯P pin accepts an external signal that

enables sleep mode. In sleep mode, the current consumption is

reduced to an extremely low level, conserving battery power in

portable electronics.

Antistall Algorithm If a stall condition occurs, the device will

execute an antistall algorithm.

Device Start-up The start-up behavior of the device output

is determined by the applied magnetic field, as specified in the

Operating Characteristics table.

Allegro MicroSystems, Inc.

4

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

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