LTC6995-1/LTC6995-2

Rev. B

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17

APPLICATIONS INFORMATION

Figure 14. Extended POR. Timer Reset During Initial POR Interval. Full POR Interval Provided Once System Signals the OK

Figure 15. Long Time Delayed Rising Edge. Delay Time Can Range from 500µs to 4.8 Hours

LTC6995-1

SYSTEM

RST

GND

SET

OUT

V+

DIV

RSET

R2

R1

0.1µF

V+

POR

699512 F14

OUT

POL = 0

RST

tSTART +

1/2 tOUT

1/2 tOUT

TIMER

STOPPED

SYSTEM OK

SYSTEM OK

POR

POR EXTENDED

POR

V+

LTC6995-2

OUTPUT

RISING EDGE TRIGGERED

POL = 0

TRIGGER

RST

GND

SET

OUT

V+

DIV

RSET

R2

R1

0.1µF

V+

699512 F15

OUTPUT

TRIGGER

1/2 tOUT

1/2 tOUT

V+

1/2 tOUT

1/2 tOUT

LTC6995-1

OUTPUT

FALLING EDGE TRIGGERED

POL = 0

TRIGGER

RST

GND

SET

OUT

V+

DIV

RSET

R2

R1

0.1µF

V+

OUTPUT

TRIGGER

V+