3966 datasheet(4/12 Pages) ALLEGRO

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3966

DUAL FULL-BRIDGE

PWM MOTOR DRIVER

115 Northeast Cutoff, Box 15036

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

PWM RC Frequency

fosc

CT = 680 pF, RT = 56 k

Ω

22.9

25.4

27.9

kHz

PWM Propagation Delay Time

tPWM

Comparator Trip to Source OFF

—

1.0

1.4

µs

Cycle Reset to Source ON

—

0.8

1.2

µs

Cross-Over Dead Time

tcodt

1 k

Ω Load to 25 V

0.2

1.8

3.0

µs

Propagation Delay Times

tpd

IOUT =

±650 mA, 50% to 90%:

ENABLE ON to Source ON

—

100

—

ENABLE OFF to Source OFF

—

500

—

ENABLE ON to Sink ON

—

200

—

ENABLE OFF to Sink OFF

—

200

—

PHASE Change to Sink ON

—

2200

—

PHASE Change to Sink OFF

—

200

—

PHASE Change to Source ON

—

2200

—

PHASE Change to Source OFF

—

200

—

Thermal Shutdown Temp.

—

165

—

°C

Thermal Shutdown Hysteresis

∆TJ

—15

—

°C

UVLO Enable Threshold

VT(UVLO)+

Increasing VCC

—

4.1

4.6

UVLO Hysteresis

VT(UVLO)hys

0.1

0.6

—

Logic Supply Current

ICC(ON)

VENABLE 1 = VENABLE 2 = 0.8 V

—

ICC(OFF)

VENABLE 1 = VENABLE 2 = 2.4 V

—

9.0

Limits

Characteristic

Symbol

Test Conditions

Min.

Typ.

Max.

Units

ELECTRICAL CHARACTERISTICS at TA = +25

°C, V

BB = 30 V, VCC = 4.75 V to 5.5 V, VREF = 2 V,

VS = 0 V, 56 k

Ω & 680 pF RC to Ground (unless noted otherwise) (cont.)

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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