SOT23, Low-Power µP Supervisory Circuits
with Battery Backup and Chip-Enable Gating
MAX6365–MAX6368
ELECTRICAL CHARACTERISTICS (continued)
(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
RESET IN
(MAX6368 only)
RESET IN Threshold
RESET IN Leakage Current
RESET IN to Reset Delay
CHIP-ENABLE GATING
CE
IN Leakage Current
CE
IN to
CE
OUT Resistance
CE
OUT Short-Circuit Current
CE
IN to
CE
OUT Propagation
Delay
Reset asserted
Reset not asserted (Note 4)
Reset asserted,
CE
OUT = 0
50Ω source,
C
LOAD
= 50pF
V
CC
= 4.75V
V
CC
= 3.15V
0.8
✕
V
CC
V
V
CC
= 0, V
BATT
> 2.2V, I
SOURCE
= 1µA
Reset-to-CE OUT Delay
V
BATT
-
0.1
12
µs
20
0.75
1.5
2
±1
100
2.0
7
9
µA
Ω
mA
ns
V
OD
= 50mV, RESET IN falling
V
RTH
1.185
1.235
±0.01
1.5
1.285
±25
V
nA
µs
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
CC
= 5V, V
CC
> V
BATT
, I
SOURCE
= 100µA
CE
OUT Output Voltage High
Note 1:
Note 2:
Note 3:
Note 4:
All devices are 100% production tested at T
A
= +25°C. Limits over temperature are guaranteed by design.
V
BATT
can be 0 anytime, or V
CC
can go down to 0 if V
BATT
is active (except at startup).
RESET is pulled up to OUT. Specifications apply for OUT = V
CC
or OUT = BATT.
The chip-enable resistance is tested with V
CC
= V
TH(MAX)
and
CE
IN = V
CC
/2.
Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. TEMPERATURE (NO LOAD)
MAX6365/8-01
BATTERY SUPPLY CURRENT
(BACKUP MODE) vs. TEMPERATURE
MAX6365/8-02
BATT-TO-OUT ON-RESISTANCE
vs. TEMPERATURE
7
6
5
4
3
2
1
0
I
OUT
= 25mA
V
CC
= 0
-40
-20
0
20
40
60
80
V
BATT
= 2.8V
V
BATT
= 5.0V
V
BATT
= 2.0V
MAX6365/8-03
16
15
SUPPLY CURRENT (µA)
14
13
12
11
10
9
8
1.2
BATTERY SUPPLY CURRENT (µA)
1.0
0.8
0.6
V
BATT
= 2.0V
0.4
0.2
0
V
BATT
= 2.8V
-40
-20
0
20
40
60
80
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
TEMPERATURE (°C)
BATT-TO-OUT ON-RESISTANCE (Ω)
V
CC
= 5.0V
V
BATT
= 0
V
CC
= 0
8
TEMPERATURE (°C)
4
_______________________________________________________________________________________
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
