3961 datasheet(4/10 Pages) ALLEGRO

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3961

DUAL FULL-BRIDGE

PWM MOTOR DRIVER

115 Northeast Cutoff, Box 15036

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

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

V, 30 kW & 1000 pF RC to Ground (unless noted otherwise) (cont.)

Limits

Characteristic

Symbol

Test Conditions

Min.

Typ.

Max.

Units

Reference Output Current

IREF OUT

3 k

Ω ≤ R

D = R1 + R2 ≤ 15 kΩ

—

900

µA

Ref. Input Offset Current

IOS

VREF IN = 1 V

-2.5

1.0

µA

Comparator Input Offset Volt.

VIO

VREF = 0 V

-5.0

5.0

Comparator Input Volt. Range

VREF

Operating

-0.3

—

1.0

PWM RC Fixed Off-time

tOFF RC

CT = 1000 pF, RT = 30 kΩ

µs

PWM Propagation Delay Time

tPWM

Comparator Trip to Source OFF

—

1.2

2.0

µs

PWM Minimum On Time

tON(min)

CT = 1000 pF ± 5%, RT ≥ 15 kΩ, VCC = 5 V

—

2.5

3.6

µs

Propagation Delay Times

tpd

IOUT = ±800 mA, 50% to 90%:

ENABLE ON to Source ON

—

3.2

—

µs

ENABLE OFF to Source OFF

—

1.2

—

µs

ENABLE ON to Sink ON

—

3.2

—

µs

ENABLE OFF to Sink OFF

—

0.7

—

µs

PHASE Change to Sink ON

—

3.2

—

µs

PHASE Change to Source ON

—

3.2

—

µs

PHASE Change to Sink OFF

—

0.7

—

µs

PHASE Change to Source OFF

—

1.2

—

µs

Thermal Shutdown Temp.

—

165

—

˚C

Thermal Shutdown Hysteresis

∆T

—15

—

˚C

UVLO Disable Threshold

2.5

2.7

2.9

UVLO Hysterisis

0.7

0.9

1.1

Logic Supply Current

ICC(ON)

VENABLE1 = VENABLE2 = 0.8 V

—

ICC(OFF)

VENABLE1 = VENABLE2 = 2.4 V

—

Logic Supply Current

∆I

CC(ON)

VENABLE1 = VENABLE2 = 0.8 V

—

0.18

—

mA/˚C

Temperature Coefficient

Control Logic (Continued)

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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