NJM3771

Figure 4. Definitions of symbols

Figure 5. Definition of terms

50 %

V

CH

t

on

t

off

V

E

| V

– V

|

MA

MB

t

t

f =

s

ton toff

+

D =

t

off

+

1

I

I

M

OL

I

I

I

I

IH

IL

3 300 pF

I

I

C

A

V

V

C

820 pF

1 k

Ω

R

S

T

15 k

Ω

I MM

RC

NJM 3771

20

12

11

M

B2

M

A2

GND

V

R2

CD

2

V

CC

V

CC

22

19

16

13

S

R

Q

15

14

5, 6, 17, 18

+

–

+

–

Logic

21

S

R

Q

+

–

+

–

Logic

+

–

3

1

4

2

10

9

8

7

V

V

V

I

IH

IL

V

V

A

R

V

V

CH

C

M

MA

s ABSOLUTE MAXIMUM RATINGS

Parameter

Pin no. (DIP)

Symbol

Min

Max

Unit

Voltage

Logic supply

11

V

CC

07

V

Motor supply

3, 20

V

MM

045

V

Logic inputs

7, 8, 15, 16

V

I

-0.3

6

V

Comparator inputs

10, 13

V

C

-0.3

V

CC

V

Reference inputs

9, 14

V

R

-0.3

7.5

V

Current

Motor output current

1, 4, 19, 22

I

M

-700

+700

mA

Logic inputs

7, 8, 15, 16

I

I

-10

-

mA

Analog inputs

10, 13

I

A

-10

-

mA

Oscillator charging current

12

I

RC

-5

mA

Temperature

Operating junction temperature

T

J

-40

+150

°C

Storage temperature**

T

S

-55

+150

°C

** Circuit only. The packaging can handle max 60

°C

s RECOMMENDED OPERATING CONDITIONS

Parameter

Symbol

Min

Typ

Max

Unit

Logic supply voltage

V

CC

4.75

5

5.25

V

Motor supply voltage

V

MM

10

-

40

V

Motor output current ***

I

M

-650

-

650

mA

Junction temperature ****

T

J

-20

-

+125

°C

Rise time logic inputs

t

r

--

2

µs

Fall time logic inputs

t

f

--

2

µs

Oscillator timing resistor

R

T

2

15

20

kohm

*** In microstepping mode, “sine/cosine” drive where I

channels fully on.

****See operating temperature chapter.