MAX704CSA+ Maxim Integrated Products, MAX704CSA+ Datasheet - Page 3

• Manufacturer Part Number: MAX704CSA+
• Description: IC MPU SUPERVISORY CIRCUIT 8SOIC
• Manufacturer: Maxim Integrated Products
• Type: Battery Backup Circuitr

Specifications of MAX704CSA+

• Number Of Voltages Monitored: 1
• Output: Push-Pull, Totem Pole
• Reset: Active Low
• Reset Timeout: 140 ms Minimum
• Voltage - Threshold: 4.4V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Monitored Voltage: 4.4 V
• Undervoltage Threshold: 4.25 V
• Overvoltage Threshold: 4.5 V
• Manual Reset: Resettable
• Watchdog: No
• Battery Backup Switching: Yes
• Power-up Reset Delay (typ): 280 ms
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 0 V
• Supply Current (typ): 350 uA
• Maximum Power Dissipation: 471 mW
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 70 C
• Chip Enable Signals: No
• Minimum Operating Temperature: 0 C
• Output Type: Active Low or Push-Pull
• Power Fail Detection: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ELECTRICAL CHARACTERISTICS (continued)
(V
Note 2: Either V
Note 3: “-“ = battery-charging current, “+” = battery-discharging current.
(V
MR Input Threshold
MR Pulse Width
MR to RESET Delay
MR Pullup Current
PFI Input Threshold
PFI Input Current
PFO Output Voltage
RESET
CC
CC
5.00
4.95
4.90
4.85
4.80
4.75
+5V
V
+5V
CC
= +4.75V to +5.5V for MAX703, V
= +5V, V
0
OUTPUT VOLTAGE vs. LOAD CURRENT
V
CC
PARAMETER
MAX703 RESET RESPONSE TIME
10
SLOPE = 5Ω
V
BATT
CC
GND
CC
RESET
or V
20
= 2.8V, T
I
OUT
_______________________________________________________________________________________
2µs/div
BATT
(mA)
10kΩ
30pF
30
RESET
Low-Cost Microprocessor Supervisory
can go to 0V if the other is greater than 2.0V.
A
V
= +25°C, unless otherwise noted.)
BATT
T
T
V
A
40
A
SYMBOL
CC
= +25°C
= +25°C
= +2.8V
MAX703 toc04
= +5V
V
V
t
t
V
V
MR
MD
OH
OL
IH
IL
CC
50
+4V
1V/div
0V
= +4.5V to +5.5V for MAX704, V
Low
High
MR = 0V
V
I
I
SOURCE
SINK
+1.30V
CC
2.80
2.78
2.76
2.74
2.72
2.70
PFO
+5V
PFI
= 5V
= 3.2mA
0
OUTPUT VOLTAGE vs. LOAD CURRENT
Circuits with Battery Backup
= 800µA
POWER-FAIL COMPARATOR
0.2
CONDITIONS
RESPONSE TIME
PFI
1.25V
SLOPE = 80Ω
0.4
I
400ns/div
OUT
(mA)
0.6
Typical Operating Characteristics
PFO
+5V
BATT
V
BATT
T
T
V
1kΩ
A
0.8
30pF
A
CC
V
= +25°C
= +25°C
CC
= +2.8V
MAX703 toc05
= +5V
= 2.8V, T
= 0V
1.0
0V
+1.20V
A
+1.20V
RESET
= T
PFO
V
V
PFI
OV
0V
CC
0V
MIN
1.20
150
100
2.0
-25
1.5
MIN
CC
-
MAX703 RESET OUTPUT VOLTAGE
PFI
to T
1.25V
POWER-FAIL COMPARATOR
V
MAX
CC
vs. SUPPLY VOLTAGE
+0.01
TYP
1.25
250
RESPONSE TIME
+5V
, unless otherwise noted.)
30pF
V
T
A
500ms/div
BATT
400ns/div
V
PFO
= +25°C
CC
GND
RESET
= 0V
MAX
1kΩ
1.30
250
600
+25
0.8
0.4
2kΩ
330pF
T
V
A
CC
RESET
= +25°C
MAX703 toc03
MAX703 toc06
= +5V
UNITS
µA
nA
ns
ns
V
V
V
+3V
+1.30V
+5V
1V/div
+5V
1V/div
3