ROHM BA6212 Datasheet

1

Standard ICs

8-channel high current driver

BA6212

The BA6212 is a monolithic IC including 8 circuits and capable of high current drive. Capable of using a current as
high as 400mA, it has a strobe pin, and is thus ideal for use as a driver circuit in thermal printers. Its input can be
directly coupled to CMOS devices.

•

Applications
Thermal printers
Motors
Relays
LEDs and other drivers

•

Features

1) High current drive capability of 400mA (Max).

2) 8 circuits included.

3) Equipped with a strobe pin.

4) Easy installation due to inputs and outputs being
aligned in the same direction.

5) Input can be directly connected to CMOS devices.

•

Block diagram

1

2

3

4

5

6

7

8

9

10

20ST

IN1

IN2

IN3

IN4

IN5

IN6

IN7

IN8

GND

N.C.

OUT1

OUT2

OUT3

OUT4

OUT5

OUT6

OUT7

OUT8

V

CC

19

18

17

16

15

14

13

12

11

2

Standard ICs BA6212

•

Absolute maximum ratings (Ta = 25°C)

Parameter Symbol Limits Unit

Power supply voltage V

CC 7V

Power dissipation Pd mW
Operating temperature Topr

°C
Storage temperature Tstg °C
Maximum output current I

OUT 400 mA

Maximum output voltage V

OUT 14 V

Maximum input voltage V

IN VCC V

1100

∗

∗

Reduced by 11mW for each increase in Ta of 1°C over 25°C.

– 25 ~ + 75
– 55 ~ + 125

•

Internal circuit configuration

VCC

OUT PUT

GND

12 ~ 19

10

11

SUB

Q

4

Q2

Q3

Q1

1

R

4

R3

R5

R2

R1

7.3kΩ
270Ω

R

6

30kΩ

3kΩ

D1

INPUT

6.6kΩ

2 ~ 9

ST

1.2kΩ

Fig. 1

•

Electrical characteristics (unless otherwise noted, Ta = 25°C, VCC = 5V)

Parameter Symbol Min. Typ. Max. Unit Conditions

Output saturation voltage 1

—

0.2 0.3 V I

OUT = 200mA, VIN = 1V

Output saturation voltage 2

—

0.4 0.6 V I

OUT = 400mA, VIN = 1V

Output leakage current 1

——

100 µ

AV

IN = 3.6V, VOUT = 12V

Output leakage current 2

——

100 µ

AV

IN = 1V, VOUT = 12V, VST = 0.3V

Input current

—

– 0.5 – 1mAV

IN = 0V, IOUT = 0mA

Input low level voltage

——

1V

—

Input high level voltage

V

OUT 1

V

OUT 2

I

OL 1

I

OL 2

I

IN

V

IL

V

IH 3.6

——

V

—

•

Application example

Drive power supply

BA6212

Load

+ 5V

11

1
2
3

5
6

7
8

9

4

19
18

10

16
15

14
13

12

17

Input

S.T. input

Fig. 2