Supply voltage Supervisor TL77xx Series

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Contents

1. Introduction ............................................................................................................................1

2. Circuit Description..................................................................................................................2

3. Application examples.............................................................................................................5

4. Design Tips..........................................................................................................................12

5. Summary .............................................................................................................................14

List of Figures

1 Reset circuit .................................................................................................................................1

2 Functional Diagram......................................................................................................................3

3 Diagram for Calculation of C

4 Timing diagram ............................................................................................................................4

5 TL7705A in 5 Volt Microcomputer Applications ...........................................................................6

6 Voltage Supervision of a multiple power supply ..........................................................................6

7 Typical Trigger Sensitivity at the SENSE input of the voltage monitor TL7705A.........................7

8 Circuit for Reduced Trigger Sensitivity ........................................................................................8

9 Modified Output Circuit ................................................................................................................9

10 Circuit Diagram for Data Protection in a battery buffered memory ............................................10

11 Typical Variation of the Reference Voltage V

12 Typical Variation of the Reference Voltage V

13 Buffered Circuit for the Reference Voltage ................................................................................12

14 Printed Circuit Layout for the supply voltage supervisor ...........................................................13

15 Series Resistor at the C