(V = Full Operating Range, VBATT = +2.8 V, T = TMIN to
CC
A
T
MAX unless otherwise noted)
ADM8690–ADM8695–SPECIFICATIONS
P aram eter
Min
Typ
Max
Units
Test Conditions/Com m ents
BAT T ERY BACKUP SWIT CHING
VCC Operating Voltage Range
ADM8690, ADM8691, ADM8694, ADM8695
ADM8692, ADM8693
4.75
4.5
5.5
5.5
V
V
VBAT T Operating Voltage Range
ADM8690, ADM8691, ADM8694, ADM8695
ADM8692, ADM8693
2.0
2.0
4.25
4.0
V
V
VOUT Output Voltage
VCC – 0.005 VCC – 0.0025
VCC – 0.2 VCC – 0.125
V
V
IOUT = 1 mA
IOUT ≤ 100 mA
VOUT in Battery Backup Mode
Supply Current (Excludes IOUT
VBAT T – 0.005 VBAT T – 0.002
V
µA
µA
IOUT = 250 µA, VCC < VBAT T – 0.2 V
IOUT = 100 µA
VCC = 0 V, VBAT T = 2.8 V
5.5 V > VCC > VBAT T + 0.2 V
T A = +25°C
)
140
0.4
200
1
Supply Current in Battery Backup Mode
Battery Standby Current
(+ = Discharge, – = Charge)
Battery Switchover T hreshold
VCC – VBAT T
Battery Switchover Hysteresis
BAT T ON Output Voltage
BAT T ON Output Short Circuit Current
–0.1
+0.02
µA
70
50
20
mV
mV
mV
V
mA
µA
Power-Up
Power-Down
0.3
25
ISINK = 3.2 mA
BAT T ON = VOUT = 4.5 V Sink Current
BAT T ON = 0 V Source Current
55
0.5
2.5
RESET AND WAT CHDOG T IMER
Reset Voltage T hreshold
ADM8690, ADM8691, ADM8694, ADM8695
ADM8692, ADM8693
Reset T hreshold Hysteresis
4.5
4.25
4.65
4.4
40
4.73
4.48
V
V
mV
Reset T imeout Delay
ADM8690, ADM8691, ADM8692, ADM8693
ADM8694, ADM8695
Watchdog T imeout Period, Internal Oscillator
35
50
200
1.6
100
4064
1011
70
ms
ms
s
OSC SEL = HIGH
OSC SEL = HIGH
Long Period
140
1.0
70
3840
768
50
280
2.25
140
4097
1025
ms
Short Period
Watchdog T imeout Period, External Clock
Cycles Long Period
Cycles Short Period
ns
mV
V
Minimum WDI Input Pulse Width
RESET Output Voltage @ VCC = +1 V
RESET, LOW LINE Output Voltage
VIL = 0.4, VIH = 3.5 V
4
0.05
20
0.4
ISINK = 10 µA, VCC = 1 V
ISINK = 1.6 mA, VCC = 4.25 V
ISOURCE = 1 µA
3.5
V
RESET, WDO Output Voltage
0.4
25
V
V
µA
mA
ISINK = 1.6 mA
ISOURCE = 1 µA
3.5
1
Output Short Circuit Source Current
Output Short Circuit Sink Current
WDI Input T hreshold
Logic Low
Logic High
WDI Input Current
10
25
Note 1
0.8
10
V
V
µA
µA
3.5
1
–1
WDI = VOUT
WDI = 0 V
–10
POWER FAIL DET ECT OR
PFI Input T hreshold
PFI Input Current
1.25
–25
1.3
±0.01
1.35
+25
0.4
V
nA
V
VCC = +5 V
PFO Output Voltage
ISINK = 3.2 mA
3.5
1
V
µA
mA
ISOURCE = 1 µA
PFI = Low, PFO = 0 V
PFI = High, PFO = VOUT
PFO Short Circuit Source Current
PFO Short Circuit Sink Current
3
25
25
CHIP ENABLE GAT ING
CEIN T hreshold
0.8
0.4
7
V
V
µA
V
V
VIL
VIH
3.0
CEIN Pull-Up Current
CEOUT Output Voltage
3
3
ISINK = 3.2 mA
ISOURCE = 3.0 mA
ISOURCE = 1 µA, VCC = 0 V
VOUT – 1.5
VOUT – 0.05
V
ns
CE Propagation Delay
REV. 0
–2–
ADI [ ADI ]
