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A3968SA

DUAL FULL-BRIDGE PWM MOTOR DRIVER WITH BRAKE

Allegro MicroSystems 

3968

DUAL FULL-BRIDGE

PWM MOTOR DRIVER

WITH BRAKE

ELECTRICAL CHARACTERISTICS at TA = +25°C, VBB = 30 V, VCC = 4.75 V to 5.5 V, VREF = 2 V,

VS = 0 V, 56 kΩ & 680 pF RC to Ground (unless noted otherwise)

Limits

Characteristic

Symbol Test Conditions

Min. Typ. Max. Units

Output Drivers

Load Supply Voltage Range

VBB

Operating, IOUT = ±650 mA, L = 3 mH

VCC

—

30

V

Output Leakage Current

ICEX

VOUT = 30 V

—

<1.0

50

µA

VOUT = 0 V

—

<-1.0

-50

µA

Output Saturation Voltage

VCE(SAT) Source Driver, IOUT = -400 mA

—

1.7

2.0

V

Source Driver, IOUT = -650 mA

—

1.8

2.1

V

Sink Driver, IOUT = +400 mA, VS = 0.5 V

—

0.3

0.5

V

Sink Driver, IOUT = +650 mA, VS = 0.5 V

—

0.7

1.3

V

Clamp Diode Forward Voltage

VF

IF = 400 mA

—

1.1

1.4

V

IF = 650 mA

—

1.4

1.6

V

Motor Supply Current

(No Load)

IBB(ON)

IBB(OFF)

Both bridges ON (forward or reverse)

All INPUTs = 2.4 V

—

3.0

5.0

mA

—

<1.0

200

µA

Control Logic

Logic Supply Voltage Range

Logic Input Voltage

Logic Input Current

Reference Input Volt. Range

Reference Input Current

Reference Divider Ratio

Current-Sense Comparator

Input Offset Voltage

Current-Sense Comparator

Input Voltage Range

Sense-Current Offset

VCC

VIN(1)

VIN(0)

IIN(1)

IIN(0)

VREF

IREF

VREF/VTRIP

VIO

Operating

VIN = 2.4 V

VIN = 0.8 V

Operating

VREF = 0.1 V

VS

Operating

ISO

IS – IOUT, 50 mA ≤ IOUT ≤ 650 mA

4.75

—

5.50

V

2.4

—

—

V

—

—

0.8

V

—

<1.0

20

µA

—

<-20

-200

µA

0.1

–

2.0

V

-2.5

0

1.0

µA

3.8

4.0

4.2

—

-6.0

0

6.0

mV

-0.3

—

1.0

V

12

18

24

mA

NOTES:1. Typical Data is for design information only.

2. Negative current is defined as coming out of (sourcing) the specified device terminal.

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