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3961

DUAL FULL-BRIDGE PWM MOTOR DRIVER

Allegro MicroSystems 

3961

DUAL FULL-BRIDGE

PWM MOTOR DRIVER

ELECTRICAL CHARACTERISTICS at TA = +25°C, VBB = 45 V, VCC = 4.75 V to 5.25 V, VSENSE = 0

V, 30 kΩ & 1000 pF RC to Ground (unless noted otherwise)

Characteristic

Symbol Test Conditions

Min.

Limits

Typ. Max.

Units

Output Drivers

Load Supply Voltage Range

Output Leakage Current

Output Saturation Voltage

Clamp Diode Forward Voltage

(Sink or Source)

Motor Supply Current

(No Load)

VBB

ICEX

VCE(SAT)

VF

IBB(ON)

IBB(OFF)

Operating, IOUT = ±800 mA, L = 3 mH

VOUT = VBB

VOUT = 0 V

Source Driver, IOUT = -500 mA

Source Driver, IOUT = -750 mA

Source Driver, IOUT = -800 mA

Sink Driver, IOUT = +500 mA

Sink Driver, IOUT = +750 mA

Sink Driver, IOUT = +800 mA

IF = 500 mA

IF = 750 mA

IF = 800 mA

VENABLE = 0.8 V

VENABLE = 2.4 V

5.0

—

45

V

—

<1.0

50

µA

—

<-1.0

-50

µA

—

1.0

1.2

V

—

1.1

1.3

V

—

—

1.4

V

—

0.3

0.6

V

—

0.5

0.9

V

—

—

1.0

V

—

1.1

1.4

V

—

1.3

1.6

V

—

—

1.7

V

—

5.0

7.0

mA

—

5.0

7.0

mA

Control Logic

Logic Supply Voltage Range

Logic Input Voltage

Logic Input Current

Reference Output Voltage

VCC

VIN(1)

VIN(0)

IIN(1)

IIN(0)

VREF OUT

Operating

VIN = 2.4 V

VIN = 0.8 V

VCC = 5.0 V, IREF OUT = 90 to 900 µA:

IFULL/PD = LOW

IFULL/PD = HIGH

4.75

—

5.25

V

2.4

—

—

V

—

—

0.8

V

—

<1.0

20

µA

—

<-2.0 -200

µA

2.45

2.50

2.55

V

1.49

1.67

1.84

V

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