Datasheet

MAX6365–MAX6368
SOT23, Low-Power µP Supervisory Circuits
with Battery Backup and Chip-Enable Gating
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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)
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.
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
Soldering Temperature (reflow)
Lead (Pb)-free packages..............................................+260°C
Packages containing lead (Pb).....................................+240°C
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
Operating Voltage Range
(Note 2)
V
CC
, V
BATT
No load 0 5.5 V
V
CC
= 2.8V 10 30
V
CC
= 3.6V 12 35
Supply Current
(Excluding I
OUT
)
I
CC
No load, V
CC
> V
TH
V
CC
= 5.5V 15 50
µA
T
A
= +25°C1
Supply Current in Battery-
Backup Mode (Excluding I
OUT
)
I
BACK
V
BATT
= 2.8V,
V
CC
= 0V
T
A
= -40°C to +85°C3
µA
T
A
= +25°C
-0.10 +0.02
BATT Standby Current I
BATT
5.5V > V
CC
> (V
BATT
+ 0.2V)
T
A
= -40°C to +85°C
-1.00 +0.05
µA
V
CC
= 4.75V, I
OUT
= 150mA 3.1
V
CC
= 3.15V, I
OUT
= 65mA 3.7V
CC
to OUT On-Resistance R
ON
V
CC
= 2.38V, I
OUT
= 25mA 4.6
Ω
V
BATT
= 4.5V, I
OUT
= 20mA
V
BATT
-
0.2
V
BATT
= 3.0V, I
OUT
= 10mA
V
BATT
-
0.15
Output Voltage in Battery-
Backup Mode
V
OUT
V
BATT
= 2.25V, I
OUT
= 5mA
V
BATT
-
0.15
V
Power-up 20
Battery-Switchover Threshold
(V
CC
- V
BATT
)
V
SW
V
CC
< V
TH
Power-down -20
mV
MAX636_ _KA46
4.50 4.63 4.75
MAX636_ _KA44
4.25 4.38 4.50
MAX636_ _KA31
3.00 3.08 3.15
MAX636_ _KA29
2.85 2.93 3.00
MAX636_ _KA26
2.55 2.63 2.70
Reset Threshold V
TH
MAX636_ _KA23
2.25 2.32 2.38
V
V
CC
Falling Reset Delay t
RD
V
CC
falling at 10V /ms 20 µs