参数资料
型号: ADM8690ANZ
厂商: Analog Devices Inc
文件页数: 4/24页
文件大小: 0K
描述: IC SUPERVISOR MPU 4.65V 8DIP
标准包装: 50
类型: 备用电池电路
监视电压数目: 1
输出: 推挽式,图腾柱
复位: 低有效
复位超时: 最小为 35 ms
电压 - 阀值: 4.65V
工作温度: -40°C ~ 85°C
安装类型: 通孔
封装/外壳: 8-DIP(0.300",7.62mm)
供应商设备封装: 8-PDIP
包装: 管件

ADM8690/ADM8691/ADM8695
SPECIFICATIONS
V CC = full operating range, V BATT = 2.8 V, T A = T MIN to T MAX , unless otherwise noted.
Table 2.
Data Sheet
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
BATTERY BACKUP SWITCHING
V CC Operating Voltage Range
V BATT Operating Voltage Range
4.75
2.0
5.5
4.25
V
V
V OUT Output Voltage
V OUT in Battery Backup Mode
V CC ? 0.005
V CC ? 0.2
V BATT ? 0.005
V CC ? 0.0025
V CC ? 0.125
V BATT ? 0.002
V
V
V
I OUT = 1 mA
I OUT ≤ 100 mA
I OUT = 250 μA, V CC < V BATT ? 0.2 V
Supply Current (Excludes I OUT )
Supply Current in Battery Backup Mode
140
0.4
200
1
μA
μA
I OUT = 100 μA
V CC = 0 V, V BATT = 2.8 V
Battery Standby Current
5.5 V > V CC > V BATT + 0.2 V
+ = Discharge, ? = Charge
Battery Switchover Threshold
V CC ? V BATT
Battery Switchover Hysteresis
BATT ON Output Voltage
BATT ON Output Short-Circuit Current
?0.1
70
50
20
55
+0.02
0.3
μA
mV
mV
mV
V
mA
T A = 25°C
Power-up
Power-down
I SINK = 3.2 mA
BATT ON = V OUT = 4.5 V, sink current
0.5
2.5
25
μA
BATT ON = 0 V, source current
RESET AND WATCHDOG TIMER
Reset Voltage Threshold
Reset Threshold Hysteresis
4.5
4.65
40
4.73
V
mV
Reset Timeout Delay
Watchdog Timeout Period, Internal
35
140
1.0
50
200
1.6
70
280
2.25
ms
ms
Seconds
OSC SEL = high
OSC SEL = high
Long period
Oscillator
70
100
140
ms
Short period
Watchdog Timeout Period, External Clock
Minimum WDI Input Pulse Width
RESET Output Voltage at V CC = 1 V
RESET, LOW LINE Output Voltage
3840
768
50
4064
1011
4
0.05
4097
1025
20
0.4
Cycles
Cycles
ns
mV
V
Long period
Short period
V IL = 0.4 V, V IH = 3.5 V
I SINK = 10 μA, V CC = 1 V
I SINK = 1.6 mA, V CC = 4.25 V
3.5
V
I SOURCE = 1 μA
RESET, WDO Output Voltage
3.5
0.4
V
V
I SINK = 1.6 mA
I SOURCE = 1 μA
Output Short-Circuit Source Current
Output Short-Circuit Sink Current
1
10
25
25
μA
mA
WDI Input Threshold 1
Logic Low
Logic High
3.5
0.8
V
V
WDI Input Current
?10
1
?1
10
μA
μA
WDI = V OUT
WDI = 0 V
POWER-FAIL DETECTOR
PFI Input Threshold
PFI Input Current
PFO Output Voltage
1.25
?25
1.3
±0.01
1.35
+25
0.4
V
nA
V
V CC = 5 V
I SINK = 3.2 mA
3.5
V
I SOURCE = 1 μA
PFO Short-Circuit Source Current
PFO Short-Circuit Sink Current
1
3
25
25
μA
mA
PFI = low, PFO = 0 V
PFI = high, PFO = V OUT
Rev. C | Page 4 of 24
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