MAX817MCUA Maxim Integrated, MAX817MCUA Datasheet - Page 4

• Manufacturer Part Number: MAX817MCUA
• Description: Supervisory Circuits
• Manufacturer: Maxim Integrated
• Series: MAX817, MAX817L, MAX817M, MAX818, MAX818L, MAX818M, MAX819, MAX819L, MAX819Mr

Specifications of MAX817MCUA

• Number Of Voltages Monitored: 1
• Monitored Voltage: 4.4 V
• Undervoltage Threshold: 4.25 V
• Overvoltage Threshold: 4.5 V
• Output Type: Active Low, Open Drain
• Manual Reset: Not Resettable
• Watchdog: Watchdog
• Battery Backup Switching: Backup
• Power-up Reset Delay (typ): 280 ms
• Supply Voltage - Max: 5.5 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Package / Case: uSOP
• Chip Enable Signals: No
• Maximum Power Dissipation: 330 mW
• Minimum Operating Temperature: 0 C
• Power Fail Detection: Yes
• Supply Current (typ): 11 uA
• Supply Voltage - Min: 0 V

+5V Microprocessor Supervisory Circuits
ELECTRICAL CHARACTERISTICS (continued)
(V
noted. Typical values are at T
4
Note 2: Either V
Note 3: “-” = battery-charging current, “+” = battery-discharging current.
Note 4: WDI is internally serviced within the watchdog timeout period if WDI is left unconnected.
Note 5: WDI input is designed to be driven by a three-stated output device. To float WDI, the “high-impedance mode” of the output
Note 6: The chip-enable resistance is tested with V
Note 7: The chip-enable propagation delay is measured from the 50% point at CE IN to the 50% point at CE OUT.
CHIP-ENABLE GATING (MAX818 only)
CE IN Leakage Current
CE IN to CE OUT Resistance
(Note 6)
CE OUT Short-Circuit Current
(Reset Active)
CE IN to CE OUT Propagation
Delay (Note 7)
CE OUT Output
CE OUT Input Threshold
RESET to CE OUT Delay
CC
_______________________________________________________________________________________
= +4.75V to +5.5V for MAX81_L, V
device must have a maximum leakage current of 10µA and a maximum output capacitance of 200pF. The output device
must also be able to source and sink at least 200µA when active.
V
PARAMETER
C E IN
= V
CC
C E OUT
or V
BATT
= V
A
can go to 0V if the other is greater than 2.0V.
= +25°C.)
CC
SYMBOL
/2.
V
V
V
OH
IH
IL
CC
= +4.5V to +5.5V for MAX81_M, V
Disable mode
Enable mode
Disable mode, CE OUT = 0V
50 source impedance driver, C
I
I
V
Power-down
OUT
OUT
CC
= 5V
CC
= -100µA, V
= -1µA, V
= +4.75V for the MAX818L and V
CC
CONDITIONS
CC
= 0V, V
= 0V
BATT
= 2.8V
LOAD
BATT
= 50pF
= 2.8V, T
CC
= +4.5V for the MAX818M.
V
A
CC
MIN
0.1
2.7
3.5
= T
- 1V
MIN
±0.005
to T
TYP
0.75
40
15
3
MAX
, unless otherwise
MAX
150
2.0
0.8
±1
8
UNITS
mA
µA
ns
µs
V
V