A3973KB View Datasheet(PDF) - Allegro MicroSystems

Part Name

Description

MFG CO.

A3973KB

DUAL FULL BRIDGE PROTECTED MOTOR DRIVER

Allegro MicroSystems 

1 2 3 4 5

Page 3 of 5

3976 Dual Protected PWM Motor Driver

ELECTRICAL CHARACTERISTICS at TA = -40 °C to +125°C, VBB = 30 V, VCC = 5.0 V (Unless noted otherwise)

Limits

Characteristics

Symbol Test Conditions

Min. Typ. Max. Units

Output Drivers

Load Supply Voltage Range

Logic Supply Range

Output Current Limit

Output Leakage Current

Output Saturation Voltage

Clamp Diode Forward Voltage

(Flyback or Ground Clamp)

VBB

VCC

ICL

ICEX

VCE(SAT)

VF

Operating

Operating

Outputs A or B = GROUND

Outputs A or B = VBB

VOUT = VBB

VOUT = 0 V

Source Driver, IOUT = -350 mA

Source Driver, IOUT = -500 ma

Sink Driver, IOUT = +350 mA

Sink Driver, IOUT = +500 ma

IF = 500 mA (Sink / Ground Clamp)

IF = 500 mA (Source / Flyback)

6

–

30

V

4.5

5.5

V

0.7

1.1

–

A

0.7

1.1

–

A

–

<1.0 50

µA

–

<1.0 -50

µA

–

1.0

1.2

V

–

1.2

1.3

–

0.2

0.4

V

–

0.4

0.6

V

–

1.2

1.5

V

–

1.55 2.0

V

Control Logic

Motor Supply Current

(No Load)

IBB

ENABLE1 = ENABLE2 = High

Sleep Mode ENABLE1 = ENABLE2 = Low

–

7

10

mA

–

–

25

µA

Logic Supply Current

Logic Input Voltage

Logic Input Current

ICC

VIN(1)

VIN(0)

IIN(1)

IIN(0)

ENABLE1 = ENABLE2 = High

–

45

50

MA

Sleep Mode, ENABLE1 = ENABLE2 = Low

–

–

75

µA

VIN = 5 V

0.7VCC

–

-

V

–

–

.3VCC

V

–

50

100

µA

VIN = 0V

–

-1.0 -2.0

µA

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