TL7702 Datasheet, PDF (3/17 Pages) Texas Instruments – Supply voltage Supervisor

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_t .......................................................................................................3
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_ref versus supply Voltage Variations .....................10
12 Typical Variation of the Reference Voltage V_ref versus Ambient Temperature Variations .........11
13 Buffered Circuit for the Reference Voltage ................................................................................12
14 Printed Circuit Layout for the supply voltage supervisor ...........................................................13
15 Series Resistor at the C_t input of the TL770xB ..........................................................................14
Supply voltage Supervisor TL77xx Series
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