3967 查看數據表（PDF） - Allegro MicroSystems

零件编号

产品描述 (功能)

生产厂家

3967

Microstepping Driver with Translator

Allegro MicroSystems 

A3967

Microstepping Driver with Translator

ELECTRICAL CHARACTERISTICS at TA = +25°C, VBB = 30 V, VCC = 3.0 V to 5.5V (unless otherwise

noted)

Limits

Characteristic

Symbol Test Conditions

Output Drivers

Load Supply Voltage Range

VBB Operating

During sleep mode

Output Leakage Current

Output Saturation Voltage

ICEX

VCE(sat)

Clamp Diode Forward Voltage VF

Motor Supply Current

IBB

VOUT = VBB

VOUT = 0 V

Source driver, IOUT = -750 mA

Source driver, IOUT = -400 mA

Sink driver, IOUT = 750 mA

Sink driver, IOUT = 400 mA

IF = 750 mA

IF = 400 mA

Outputs enabled

RESET high

Sleep mode

Control Logic

Logic Supply Voltage Range

Logic Input Voltage

Logic Input Current

Maximum STEP Frequency

Blank Time

Fixed Off Time

VCC

VIN(1)

VIN(0)

IIN(1)

IIN(0)

fSTEP

tBLANK

toff

Operating

VIN = 0.7VCC

VIN = 0.3VCC

Rt = 56 kΩ, Ct = 680 pF

Rt = 56 kΩ, Ct = 680 pF

Min.

4.75

0

–

–

–

–

–

–

–

–

–

–

–

3.0

0.7VCC

–

-20

-20

500*

700

30

Typ. Max. Units

–

30

V

–

30

V

<1.0

20

μA

<-1.0 -20

μA

1.9

2.1

V

1.7

2.0

V

0.65

1.3

V

0.21

0.5

V

1.4

1.6

V

1.1

1.4

V

–

5.0

mA

–

200

μA

–

20

μA

5.0

5.5

V

–

–

V

–

0.3VCC

V

<1.0

20

μA

<1.0

20

μA

–

–

kHz

950 1200

ns

38

46

μs

continued next page …

Table 1. Microstep Resolution Truth Table

MS1

L

H

L

H

MS2

L

L

H

H

Resolution

Full step (2 phase)

Half step

Quarter step

Eighth step

Allegro MicroSystems, Inc.

3

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

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