2

+

–

+

+

–

–

comp2

Clk

Clock

Reset

Q

GND

RD

M2

M1

R1

R2

R3

2 to 4 mA

R4

23V

Vz

comp1

Symbol

Parameter

Min

Typ

Max

Unit

Conditions

Output Voltage

18.8

24

V

V

18.5

24.3

V

I

I

OUT

Output Current Limiting

2

3

4

mA

Operating Input Voltage Range

25

450

V

I

INQ

Input Quiescent Current

500

µAV

V

OFF

Output Turn OFF Voltage

12.6

13.25

13.9

V

12.3

13.25

14.2

V

V

RESET

Output Reset Voltage

6.3

7

7.7

V

V

6

7

8

V

T

75

µAV

V

AUX

External Voltage Applied to V

OUT

22

V

I

AUX

Input Current to V

OUT

500

µAV

Electrical Characteristics

Test conditions unless otherwise specified: T

LR745

Block Diagram