Datasheet

ADM690A/ADM692A/ADM802L/M/ADM805L/M–SPECIFICATIONS
–2–
REV. 0
(V
CC
= 4.75 V to 5.5 V (ADM690A/ADM802L/ADM805L), V
CC
= 4.5 V to 5.5 V, (ADM692A/ADM802M/ADM805M), V
BATT
= +2.8 V, T
A
= T
MIN
to T
MAX
unless otherwise noted)
Parameter Min Typ Max Units Test Conditions/Comments
V
CC
/V
BATT
OPERATION
1
V
CC
Operating Voltage Range 1.0 5.5 V
Supply Current (Excludes I
OUT
) 70 100 µA
Supply Current in Battery Backup Mode 0.05 1.0 µAV
CC
= 0 V, V
BATT
= 2.8 V
Battery Standby Current 5.5 V > V
CC
> V
BATT
+ 0.2 V
(+ = Discharge, – = Charge) –0.1 +0.02 µA
V
OUT
Output Voltage V
CC
– 0.02 V
CC
– 0.01 V I
OUT
= 5 mA
V
CC
– 0.5 V
CC
– 0.05 V I
OUT
= 50 mA
V
CC
– 0.02 V I
OUT
= 250 mA
V
OUT
in Battery Backup Mode V
BATT
– 0.05 V
BATT
– 0.002 V I
OUT
= 250 µA, V
CC
< V
BATT
– 0.2 V
Battery Switchover Threshold 20 mV Power Up
–20 mV Power Down
Battery Switchover Hysteresis 40 mV
RESET THRESHOLD
Reset Voltage Threshold
ADM690A, ADM802L, ADM805L 4.5 4.65 4.75 V
ADM692A, ADM802M, ADM805M 4.25 4.4 4.5 V
ADM802L 4.55 4.7 V T
A
= 25°C, V
CC
Falling
ADM802M 4.30 4.45 V T
A
= 25°C, V
CC
Falling
Reset Threshold Hysteresis 40 mV
Reset Timeout Delay 140 200 280 ms
RESET Output Voltage V
CC
– 1.5 V I
SOURCE
= 800 µA
0.4 V I
SINK
= 3.2 mA
0.3 V I
SINK
= 100 µA, V
CC
= 1 V
RESET Output Voltage 0.8 V I
SOURCE
= 4 µA, V
CC
= 1.1 V
V
CC
– 1.5 V ADM805L/M, I
SOURCE
= 800 µA
0.4 V ADM805L/M, I
SINK
= 3.2 mA
WATCHDOG TIMER
Watchdog Timeout Period 1.0 1.6 2.25 s
WDI Input Pulse Width 50 ns V
IL
= 0.4, V
IH
= 0.8 (V
CC
)
WDI Input Threshold
Logic Low 0.8 V
Logic High 3.5 V
WDI Input Current 10 µA WDI = V
CC
–10 µA WDI = 0 V
POWER FAIL DETECTOR
PFI Input Threshold 1.20 1.25 1.30 V ADM690A, ADM692A, ADM805L/M
1.225 1.25 1.275 V ADM802L/M
PFI Input Current –25 0.01 +25 nA
PFO Output Voltage V
CC
– 1.5 V I
SOURCE
= 800 µA
0.4 V I
SINK
= 3.2 mA
NOTES
1
Either V
CC
or V
BATT
can be 0 V if the other > +2.0 V.
Specifications subject to change without notice.