3951

FULL-BRIDGE

PWM MOTOR DRIVER

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

4

Control Logic

Logic Supply Voltage Range

Operating

4.5

5.0

5.5

V

Logic Input Voltage

2.0

––

V

––

0.8

V

Logic Input Current

–

<1.0

20

µA

–

<-2.0

-200

µA

Reference Voltage Range

Operating

2.0

–

V

Reference Input Current

2.0 V

25

40

55

µA

Reference Voltage Divider Ratio

–

9.5

10.0

10.5

–

PWM RC Fixed Off Time

Ω

18

20

22

µs

PWM Minimum On Time

≥ 12 kΩ

–

1.7

3.0

µs

≥ 12 kΩ

–

2.5

3.8

µs

Propagation Delay Time

ENABLE on to source driver on

–

2.9

–

µs

ENABLE off to source driver off

–

0.7

–

µs

ENABLE on to sink driver on

–

2.4

–

µs

ENABLE off to sink driver off

–

0.7

–

µs

PHASE change to source driver on

–

2.9

–

µs

PHASE change to source driver off

–

0.7

–

µs

PHASE change to sink driver on

–

2.4

–

µs

PHASE change to sink driver off

–

0.7

–

µs

Comparator trip to sink driver off

–

0.8

1.5

µs

Thermal Shutdown Temperature

–

165

–

°C

Thermal Shutdown Hysteresis

–

15

–

°C

UVLO Disable Threshold

3.15

3.50

3.85

V

UVLO Hysteresis

300

400

500

mV

Logic Supply Current

–

20

30

mA

(No Load)

–

12

18

mA

–

26

40

mA

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

2. Each driver is tested separately.

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

Limits

Characteristic

Symbol

Test Conditions

Min.

Typ.

Max.

Units

ELECTRICAL CHARACTERISTICS (Continued)