BLOCK DIAGRAM

SCHEMATIC DIAGRAM

PIN FUNCTIONS

N

°

Name

Function

1

Input 1

Low Quiescent Current 50mA Regulator Input

2

Input 2

100mA Regulator Input.

3

Timing

Capacitor

If Reg. 2 is switched-ON the delay capacitor is charged with a 10

µA constant current. When

Reg. 2 is switched-OFF the delay capacitor is discharged.

4

GND

Common Ground

5

Disable Input

6

Reset Output

When pin 3 reaches 5V the reset output is switched low.

5V

10

µA

7

Output 2

8

Output 1

5V – 50mA regulator output with low leakage in switch-OFF condition.

L4903

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