Microprocessor Supervisory Circuit
MAX791
ABSOLUTE MAXIMUM RATINGS
Input Voltage (with respect to GND)
V
CC
.......................................................................-0.3V to +6V
VBATT..................................................................-0.3V to + 6V
All Other Inputs.....................................-0.3V to (V
OUT
+ 0.3V)
Input Current
V
CC
Peak ..........................................................................1.0A
V
CC
Continuous ............................................................250mA
VBATT Peak ..................................................................250mA
VBATT Continuous ..........................................................25mA
GND, BATT ON .............................................................100mA
All Other Outputs ............................................................25mA
Continuous Power Dissipation (T
A
= +70°C)
Plastic DIP (derate 10.53mW/°C above +70°C) ..........842mW
Narrow SO (derate 8.70mW/°C above +70°C) ............696mW
CERDIP (derate 10.00mW/°C above +70°C) ...............800mW
Operating Temperature Ranges
MAX791C_ _ ......................................................O°C to +70°C
MAX791E_ _ ....................................................-40°C to +85°C
MAX791MJE ..................................................-55°C to +125°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
CC
= 4.75V to 5.5V, VBATT = 2.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
Operating Voltage Range
V
CC
, VBATT (Note 1)
I
OUT
= 25mA
V
OUT
in Normal
Operating Mode
V
CC
= 4.5V
I
OUT
= 250mA
MAX791C/E
MAX791M
CONDITIONS
MIN
0
V
CC
- 0.05 V
CC
- 0.02
V
CC
- 0.3
V
CC
- 0.40
V
CC
- 0.2
V
CC
- 0.12
0.8
0.8
1.2
VBATT - 0.3
VBATT - 0.25
VBATT - 0.15
8
13
17
50
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
-0.1
-1.0
VBATT + 0.03
VBATT - 0.03
60
2
0.04
15
25
30
150
1
5
0.02
0.02
µA
µA
µA
V
mV
V
Ω
V
1.2
1.6
2.0
Ω
V
CC
- 0.2
V
TYP
MAX
5.5
UNITS
V
V
CC
= 3V, VBATT = 2.8V, I
OUT
= 100mA
V
CC
-to-V
OUT
On-Resistance
V
CC
= 4.5V
V
CC
= 3V
VBATT = 4.5V, I
OUT
= 20mA
V
OUT
in Battery-Backup Mode
VBATT = 2.8V, I
OUT
= 10mA
VBATT = 2.0V, I
OUT
= 5mA
VBATT = 4.5V
VBATT-to-V
OUT
On-Resistance
Supply Current in Normal
Operating Mode (Excludes I
OUT
)
Supply Current in Battery-Backup
Mode (Excludes I
OUT
) (Note 2)
VBATT Standby Current
(Note 3)
Battery-Switchover Threshold
Battery-Switchover Hysteresis
Low-Battery Detector Threshold
VBATT = 2.8V
VBATT = 2.0V
V
CC
> VBATT - 1V
V
CC
< VBATT - 1.2V,
VBATT = 2.8V
VBATT + 0.2V
≤
V
CC
Power up
Power down
MAX791C/E
MAX791M
2
_______________________________________________________________________________________
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
