MAX16023/MAX16024
Battery-Backup Circuits with
Regulated Output Voltage
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 1.53V to 5.5V, V
BATT
= 3V, reset not asserted, T
A
= T
J
= -40°C to +85°C, C
OUT
= 10µF, unless otherwise noted. Typical val-
ues are at T
A
= T
J
= +25°C.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
BATTERY-ON INDICATOR (BATT ON)
V
OUT
= 1.2V, I
SINK
= 100µA, BATT ON
deasserted
0.3
V
OUT
= 1.8V, I
SINK
= 1mA, BATT ON
deasserted
0.3
Output Low Voltage V
OL
V
OUT
= 3.3V, I
SINK
= 3.2mA, BATT ON
deasserted
0.3
V
Output High Voltage
(Push-Pull Output)
V
OH
I
SOURCE
= 100µA, BATT ON asserted V
OUT
- 0.3V V
Output Leakage Current
(Open-Drain Output)
V
CC
= 5.5V 1 µA
Output Short-Circuit Current
Sink current, V
CC
= 5V
(Note 6)
60 mA
CE GATING (CEIN, CEOUT)
CEIN Leakage Current Reset asserted, V
CC
= 0.9 x V
TH
or 0 -1 +1 µA
CEIN to CEOUT Resistance V
CC
= 5V, reset deasserted 8 50 Ω
CEOUT Short-Circuit Current Reset asserted, CEOUT = 0 0.75 2 mA
CEIN to CEOUT Propagation
Delay
50Ω source, C
LOAD
= 50pF, V
CC
= 4.75V 1.5 7 ns
Output High Voltage V
OH
I
SOURCE
= 100µA, reset asserted V
OUT
- 0.3V V
Reset to CEOUT Delay 12 µs
Note 2: All devices are 100% production tested at T
A
= +25°C and T
A
= +85°C. Limits over temperature are guaranteed by design.
Note 3: V
BATT
can be 0 anytime or V
CC
can go down to 0 if V
BATT
is active (except at startup).
Note 4: Dropout voltage is defined as (V
IN
- V
OUT
) when V
OUT
is 2% below the value of V
OUT
when V
IN
= V
OUT
+ 1V.
Note 5: CEIN to CEOUT resistance is tested with V
CC
= 5V and V
CEIN
= 0 or 5V.
Note 6: Use external current-limiting resistor to limit current to 20mA (max).
