NJM3545

Figure 12. Maximum allowable power

dissipation. TO 220 package

Figure 11. Typical application. Pin numbers refer to TO 220 package

Vcc

Output

2

Thermal

protection

Short-circuit to

V

protection

Open circuit

detection

Q

R

S

Voltage reference

To logic

5

4

3

GND

1

NJM3545

Input

Error

6.8

µF

+

Load

Supply voltage +45 V max.

TTL,

LS-TTL,

CMOS

µP,

controller

5 k

Ω

+ 5 V

R

1

2

R

cc

Short-circuit to

GND detection

Maximum allowable power dissipation [W]

-40

-20

0

20

40

60

80

100 120 140

Temperature [

°C]

0

1

2

3

4

5

6

TO 220 Package

a

b

c

*

a. Ambient temperature. No heatsink. Rth

=60

°C/W.

b. Mounted on heatsink. Rth

=20

°C/W @ 4W.

c. Case temperature. Rth

=5

°C/W.

J-A

J-A

J-C