MAX804RCPA Maxim Integrated, MAX804RCPA Datasheet - Page 10
![no-image](/images/no-image-200.jpg)
MAX804RCPA
Manufacturer Part Number
MAX804RCPA
Description
Supervisory Circuits
Manufacturer
Maxim Integrated
Series
MAX690R, MAX690S, MAX690T, MAX704R, MAX704S, MAX704T, MAX802, MAX802R, MAX802S, MAX802T, MAX804, MAX804R, MAX804S, MAX804T, MAX805, MAX805R, MAX805S, MAX805T, MAX806, MAX806R, MAX806S, MAX806Tr
Datasheet
1.MAX805TEPA.pdf
(12 pages)
Specifications of MAX804RCPA
Number Of Voltages Monitored
1
Monitored Voltage
1 V to 5.5 V
Undervoltage Threshold
2.59 V
Overvoltage Threshold
2.72 V
Output Type
Active High, Active Low, Open Drain
Manual Reset
Not Resettable
Watchdog
Watchdog
Battery Backup Switching
Backup
Power-up Reset Delay (typ)
200 ms
Supply Voltage - Max
5.5 V
Maximum Operating Temperature
+ 70 C
Mounting Style
Through Hole
Package / Case
PDIP N
Chip Enable Signals
No
Maximum Power Dissipation
727 mW
Minimum Operating Temperature
0 C
Power Fail Detection
Yes
Supply Current (typ)
50 uA
Supply Voltage - Min
1 V
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MAX804RCPA+
Manufacturer:
Maxim Integrated Products
Quantity:
135
3.0V/3.3V Microprocessor Supervisory Circuits
Figure 4. a) Adding Additional Hysteresis to the Power-Fail Comparator
Figure 5. Using the Power-Fail Comparator to Monitor an Additional Power Supply
10
a
a
______________________________________________________________________________________
PFO
V
V
TRIP
CC
V
L
PFO
= R
= R
R
R
R
R
V
0V
V
2
2
V
1
2
1
2
TRIP
H
L
V
(V
= (V
(V
V-
= R
0V
IN
PFT
PFT
= V
1
PFT
PFT
+ V
)
V
(
PFT
+ V
PFH
1
R
(
1
R
PFH
C1*
1
+
)
(
R
+ R
(
1
R
) (R
2
1
R
TO μP
1
1
R
2
2
+
1
1
)
)
)
+
1
R
–
R
(
PFI
2
3
R
1
R
1
V
+
2
1
CC
R
V
V
L
1
+
L
)
1
R
MAX690T/S/R
MAX704T/S/R
MAX802T/S/R
MAX804T/S/R
MAX805T/S/R
MAX806T/S/R
PFI
PFO
–
3
1
R
)
2
V
V
CC
TRIP
R
–
V
+
V
GND
1
MAX690T/S/R
MAX704T/S/R
MAX802T/S/R
MAX804T/S/R
MAX805T/S/R
MAX806T/S/R
TRIP
CC
V
1
R
CC
R
3
3
3.0V OR 3.3V
)
GND
V
CC
V
WHERE
H
WHERE
NOTE: V
PFO
0V
V
V
PFT
PFH
TRIP
V
V
*OPTIONAL
PFT
PFH
= 1.237V
= 10mV
IS NEGATIVE
= 1.237V
= 10mV
V
IN
V-
b
b
b) Shifting the Additional Hysteresis above V
PFO
V
CC
V
V
TRIP
H
= (V
PFO
V
R
R
V
=
1
2
TRIP
WHERE
R
R
H
PFT
0V
1
2
V
V
= R
PFT
IN
V
= V
+ V
0V
IN
1
PFT
(
(V
V
V
PFH
R
PFT
PFH
PFT
1
V
V
R
D
(
L
+ R
)
R
2
(
+ V
1
= 1.237V
= DIODE FORWARD VOLTAGE DROP
= V
= 10mV
2
R
R
+ R
C1*
1
2
TRIP
)
PFH
R
+ R
2
2
TO μP
)
)
2
V
(
PFI
TRIP
)
R
1
R
3
1
V
+
TRIP
MAX690T/S/R
MAX704T/S/R
MAX802T/S/R
MAX804T/S/R
MAX805T/S/R
MAX806T/S/R
PFI
PFO
1
R
V
2
H
+
V
GND
MAX690T/S/R
MAX704T/S/R
MAX802T/S/R
MAX804T/S/R
MAX805T/S/R
MAX806T/S/R
CC
1
R
3
3.0V OR 3.3V
)
GND
V
–
CC
V
(V
H
* MAX704T/S/R,
CC -
MAX806T/S/R ONLY
PFO
MR
R
3
V
D
PFT
)
*OPTIONAL
*
V
V
IN
IN