SOT23, Low-Power µP Supervisory Circuits
with Battery Backup and Chip-Enable Gating
MAX6365–MAX6368
ABSOLUTE MAXIMUM RATINGS
Terminal Voltages (with respect to GND)
V
CC
, BATT, OUT.......................................................-0.3V to +6V
RESET
(open drain), RESET (open drain) ................-0.3V to +6V
BATT ON,
RESET
(push-pull), RESET IN,
WDI,
CE
IN,
CE
OUT ...........................-0.3V to (V
OUT
+ 0.3V)
MR
..............................................................-0.3V to (V
CC
+ 0.3V)
Input Current
V
CC
Peak ..............................................................................1A
V
CC
Continuous .............................................................250mA
BATT Peak .....................................................................250mA
BATT Continuous .............................................................40mA
GND ...............................................................................75mA
Output Current
OUT ...............................Short-Circuit Protected for up to 10s
RESET,
RESET,
BATT ON,
CE
OUT...............................20mA
Continuous Power Dissipation (T
A
= +70°C)
8-Pin SOT23 (derate 8.75mW/°C above +70°C)........700mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature .....................................................+150°C
Lead Temperature (soldering, 10s) .................................+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
= +2.4V to +5.5V, V
BATT
= +3.0V,
CE
IN = V
CC
, reset not asserted, T
A
= -40°C to +85°C. Typical values are at T
A
= +25°C,
unless otherwise noted.) (Note 1)
PARAMETER
Operating Voltage Range
(Note 2)
Supply Current
(Excluding I
OUT
)
Supply Current in Battery-
Backup Mode (Excluding I
OUT
)
BATT Standby Current
SYMBOL
V
CC
, V
BATT
No load
V
CC
= 2.8V
I
CC
No load, V
CC
> V
TH
V
BATT
= 2.8V,
V
CC
= 0
5.5V > V
CC
> (V
BATT
+ 0.2V)
V
CC
= 3.6V
V
CC
= 5.5V
I
BACK
I
BATT
T
A
= +25°C
T
A
= -40°C to +85°C
T
A
= +25°C
T
A
= -40°C to +85°C
-0.1
-1.0
CONDITIONS
MIN
0
10
12
15
TYP
MAX
5.5
30
35
50
1
3
0.02
0.02
3.1
3.7
4.6
V
BATT
-
0.2
V
BATT
-
0.15
V
BATT
-
0.15
20
-20
4.50
4.25
3.00
2.85
2.55
2.25
4.63
4.38
3.08
2.93
2.63
2.32
20
4.75
4.50
3.15
3.00
2.70
2.38
µs
V
Ω
µA
µA
µA
UNITS
V
V
CC
= 4.75V, I
OUT
= 150mA
V
CC
to OUT On-Resistance
R
ON
V
CC
= 3.15V, I
OUT
= 65mA
V
CC
= 2.38V, I
OUT
= 25mA
V
BATT
= 4.5V, I
OUT
= 20mA
Output Voltage in Battery-
Backup Mode
V
OUT
V
BATT
= 3.0V, I
OUT
= 10mA
V
BATT
= 2.25V, I
OUT
= 5mA
Battery-Switchover Threshold
(V
CC
- V
BATT
)
V
SW
V
CC
< V
TH
MAX636_ _KA46
MAX636_ _KA44
Reset Threshold
V
TH
MAX636_ _KA31
MAX636_ _KA29
MAX636_ _KA26
MAX636_ _KA23
V
CC
Falling Reset Delay
t
RD
V
CC
falling at 10V/ms
Power-up
Power-down
V
mV
2
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MAXIM [ MAXIM INTEGRATED PRODUCTS ]
