ADM8691AN Ver la hoja de datos (PDF) - Analog Devices
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ADM8691AN Datasheet PDF : 16 Pages
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ADM8690–ADM8695–SPECIFICATIONS (VCC = Full Operating Range, VBATT = +2.8 V, TA = TMIN to
TMAX unless otherwise noted)
Parameter
BATTERY BACKUP SWITCHING
VCC Operating Voltage Range
ADM8690, ADM8691, ADM8694, ADM8695
ADM8692, ADM8693
VBATT Operating Voltage Range
ADM8690, ADM8691, ADM8694, ADM8695
ADM8692, ADM8693
VOUT Output Voltage
VOUT in Battery Backup Mode
Supply Current (Excludes IOUT)
Supply Current in Battery Backup Mode
Battery Standby Current
(+ = Discharge, – = Charge)
Battery Switchover Threshold
VCC – VBATT
Battery Switchover Hysteresis
BATT ON Output Voltage
BATT ON Output Short Circuit Current
RESET AND WATCHDOG TIMER
Reset Voltage Threshold
ADM8690, ADM8691, ADM8694, ADM8695
ADM8692, ADM8693
Reset Threshold Hysteresis
Reset Timeout Delay
ADM8690, ADM8691, ADM8692, ADM8693
ADM8694, ADM8695
Watchdog Timeout Period, Internal Oscillator
Watchdog Timeout Period, External Clock
Minimum WDI Input Pulse Width
RESET Output Voltage @ VCC = +1 V
RESET, LOW LINE Output Voltage
RESET, WDO Output Voltage
Output Short Circuit Source Current
Output Short Circuit Sink Current
WDI Input Threshold
Logic Low
Logic High
WDI Input Current
POWER FAIL DETECTOR
PFI Input Threshold
PFI Input Current
PFO Output Voltage
PFO Short Circuit Source Current
PFO Short Circuit Sink Current
CHIP ENABLE GATING
CEIN Threshold
CEIN Pull-Up Current
CEOUT Output Voltage
CE Propagation Delay
Min
Typ
Max
4.75
5.5
4.5
5.5
2.0
2.0
VCC – 0.005 VCC – 0.0025
VCC – 0.2 VCC – 0.125
VBATT – 0.005 VBATT – 0.002
140
0.4
4.25
4.0
200
1
–0.1
70
50
20
55
0.5
2.5
+0.02
0.3
25
4.5
4.25
35
140
1.0
70
3840
768
50
3.5
3.5
1
3.5
–10
1.25
–25
3.5
1
4.65
4.4
40
50
200
1.6
100
4064
1011
4
0.05
10
25
1
–1
1.3
± 0.01
3
25
3.0
3
VOUT – 1.5
VOUT – 0.05
3
4.73
4.48
70
280
2.25
140
4097
1025
20
0.4
0.4
25
0.8
10
1.35
+25
0.4
25
0.8
0.4
7
Units Test Conditions/Comments
V
V
V
V
V
IOUT = 1 mA
V
IOUT ≤ 100 mA
V
IOUT = 250 µA, VCC < VBATT – 0.2 V
µA
IOUT = 100 µA
µA
VCC = 0 V, VBATT = 2.8 V
5.5 V > VCC > VBATT + 0.2 V
µA
TA = +25°C
mV Power-Up
mV Power-Down
mV
V
ISINK = 3.2 mA
mA
BATT ON = VOUT = 4.5 V Sink Current
µA
BATT ON = 0 V Source Current
V
V
mV
ms
ms
s
ms
Cycles
Cycles
ns
mV
V
V
V
V
µA
mA
V
V
µA
µA
OSC SEL = HIGH
OSC SEL = HIGH
Long Period
Short Period
Long Period
Short Period
VIL = 0.4, VIH = 3.5 V
ISINK = 10 µA, VCC = 1 V
ISINK = 1.6 mA, VCC = 4.25 V
ISOURCE = 1 µA
ISINK = 1.6 mA
ISOURCE = 1 µA
Note 1
WDI = VOUT
WDI = 0 V
V
VCC = +5 V
nA
V
ISINK = 3.2 mA
V
ISOURCE = 1 µA
µA
PFI = Low, PFO = 0 V
mA
PFI = High, PFO = VOUT
V
VIL
V
VIH
µA
V
ISINK = 3.2 mA
V
ISOURCE = 3.0 mA
V
ISOURCE = 1 µA, VCC = 0 V
ns
–2–
REV. 0
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