MAX791CSE+T Maxim Integrated Products, MAX791CSE+T Datasheet - Page 4

• Manufacturer Part Number: MAX791CSE+T
• Description: IC SUPERVISOR MPU 16-SOIC
• Manufacturer: Maxim Integrated Products
• Type: Battery Backup Circuitr

Specifications of MAX791CSE+T

• Number Of Voltages Monitored: 1
• Output: Push-Pull, Totem Pole
• Reset: Active Low
• Reset Timeout: 140 ms Minimum
• Voltage - Threshold: 4.65V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Monitored Voltage: 4.65 V
• Undervoltage Threshold: 4.5 V
• Overvoltage Threshold: 4.75 V
• Output Type: Active Low, Open Drain, Push-Pull
• Manual Reset: Resettable
• Watchdog: Watchdog
• Battery Backup Switching: Backup
• Power-up Reset Delay (typ): 280 ms
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 0 V
• Supply Current (typ): 150 uA
• Maximum Power Dissipation: 696 mW
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: 0 C
• Power Fail Detection: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ELECTRICAL CHARACTERISTICS (continued)
(V
Microprocessor Supervisory Circuit
4
Note 1: Either V
Note 2: The supply current drawn by the MAX791 from the battery (excluding I
Note 3: "+" = battery-discharging current, "-" = battery-charging current.
Note 4: WDI is internally connected to a voltage-divider between V
Note 5: The chip-enable resistance is tested with V
Note 6: The chip-enable propagation delay is measured from the 50% point at
POWER-FAIL COMPARATOR
CHIP-ENABLE GATING
MANUAL RESET INPUT
Propagation Delay
WDI Threshold Voltage
(Note 4)
WDI Input Current
PFI Input Threshold
PFI Leakage Current
–
P
–
P
PFI-to-
–
C
–
C
(Note 5)
–
C
(Reset Active)
–
C
Delay (Note 6)
–
C
(Reset Active)
–
R
–
M
–
M
–
M
–
M
—
—
—
CC
—
—
—
—
—
—
—
—
—
F
F
—
—
E
E
E
E
E
E
—
–
–
–
–
–
R
R
R
R
–
–
–
–
O
O
S
_______________________________________________________________________________________
—
–
–
-to -
IN Leakage Current
IN-to-
OUT Short-Circuit Current
IN-to-C
OUT Output Voltage High
= 4.75V to 5.5V, VBATT = 2.8V, T
Minimum Pulse Width
Threshold
Pull-Up Current
E
—
Output Voltage
Short-Circuit Current
T
–
-to-
–
P
—
–
R
—
(VBATT - 1V) < V
disabling the watchdog function.
F
—
E
O
—
–
C
PARAMETER
–
—
—
–
C
—
S
—
E
E
–
–
E
–
Delay
E
—
OUT Resistance
OUT Propagation
T
–
OUT Delay
CC
or VBATT can go to 0V, if the other is greater than 2.0V.
CC
< VBATT. In most applications, this is a brief period as V
V
V
WDI = 0V
WDI = V
V
I
I
Output sink current
Output source current
V
V
Disabled mode
Enabled mode
Disabled mode,
50Ω source impedance driver, C
V
V
Power down
V
–
M
A
SINK
SOURCE
—
IH
IL
CC
IN
IN
CC
CC
CC
R
–
= T
= -20mV, V
= 20mV, V
= 0V
= 5V
= 5V, I
= 0V, VBATT = 2.8V, I
= 5V
MIN
= 3.2mA
OUT
= 1µA, V
to T
OUT
MAX
OD
CC
OD
= -100µA
–
C
—
CONDITIONS
, unless otherwise noted.)
CC
= 15mV
= 4.75V V
E
–
= 15mV
OUT = 0V
= 5V
OUT
–
C
—
E
–
OUT
= 1µA
IN
LOAD
= V
and GND. If unconnected, WDI is driven to 1.6V (typ),
C
= 50pF
—
E
–
OUT
OUT
–
C
—
E
–
) typically goes to 10µA when
= V
IN to the 50% point at
CC
CC
falls through this region.
0.75 x V
/ 2.
1.20
MIN
-50
3.5
0.1
3.5
2.7
25
1
CC
±0.005
±0.01
TYP
1.25
0.75
1.25
-10
20
60
15
15
55
75
15
15
23
–
C
6
7
—
E
–
OUT.
MAX
1.30
±25
100
150
250
0.8
0.4
2.0
±1
50
10
UNITS
mA
mA
µA
nA
µA
µA
µA
µs
ns
µs
µs
µs
Ω
V
V
V
V
V