7

SP791DS/08

SP791 Low Power Microprocessor Supervisory with Battery Switch-Over

© Copyright 2000 Sipex Corporation

Maximum Reset Comparator Overdrive

Without Causing a Reset

100

80

60

40

20

0

10

100

1000

10000

Watchdog Timeout

vs. Timing Capacitor

250

200

150

100

50

0

0

10

20

30

40

50

60

70

80

90 100

Timing Capacitor (nF)

Chip-Enable Propagation Delay

vs. CE OUT Load Capacitance

20

16

12

8

4

0

0

50

100

150

200

250

300

Cload (pF)

V

Output Current

1000

100

10

1

1

10

100

1000

IOUT (mA)

VBATT to VOUT vs.

Output Current

1000

100

10

1

1

10

100

IOUT (mA)

IE+2

IE+1

IE+0

IE-1

IE-2

IE-3

IE-4

IE-5

IE-6

IE-7

IE-8

.0000

5.000

V

Battery Current vs. V

V

V

Slope=0.6

Ω

V

V

Slope=5

Ω

V

Reset Threshold Voltage - V

0.1

µF Capacitor

V

Above Line

Reset Generated

Below Line

No Reset Generated

V

V

VCC=5V

50

Ω Driver