A3977SLP 查看數據表（PDF） - Allegro MicroSystems

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A3977SLP

MICROSTEPPING DMOS DRIVER WITH TRANSLATOR

Allegro MicroSystems 

3977

MICROSTEPPING DMOS DRIVER

WITH TRANSLATOR

ELECTRICAL CHARACTERISTICS at TA = +25°C, VBB = 35 V, VDD = 3.0 V to 5.5V (unless otherwise

noted)

Limits

Characteristic

Symbol Test Conditions

Min. Typ. Max. Units

Output Drivers

Load Supply Voltage Range

VBB Operating

During sleep mode

8.0

–

35

V

0

–

35

V

Output Leakage Current

IDSS VOUT = VBB

–

VOUT = 0 V

–

Output On Resistance

rDS(on) Source driver, IOUT = -2.5 A

–

Sink driver, IOUT = 2.5 A

–

Body Diode Forward Voltage VF Source diode, IF = -2.5 A

–

Sink diode, IF = 2.5 A

–

Motor Supply Current

IBB fPWM < 50 kHz

–

Operating, outputs disabled

–

<1.0

20

µA

<1.0

-20

µA

0.45 0.57

Ω

0.36 0.43

Ω

–

1.4

V

–

1.4

V

–

8.0

mA

–

6.0

mA

Sleep mode

–

–

20

µA

Control Logic

Logic Supply Voltage Range

Logic Input Voltage

Logic Input Current

Maximum STEP Frequency

HOME Output Voltage

Blank Time

Fixed Off Time

VDD

VIN(1)

VIN(0)

IIN(1)

IIN(0)

fSTEP

VOH

VOL

tBLANK

toff

Operating

VIN = 0.7VDD

VIN = 0.3VDD

IOH = -200 µA

IOL = 200 µA

Rt = 56 kΩ, Ct = 680 pF

Rt = 56 kΩ, Ct = 680 pF

3.0

0.7VDD

–

-20

-20

500*

0.7VDD

–

700

30

5.0

5.5

V

–

–

V

–

0.3VDD

V

<1.0

20

µA

<1.0

20

µA

–

–

kHz

–

–

V

–

0.3VDD

V

950 1200

ns

38

46

µs

continued next page …

4

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

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