參數(shù)資料
型號： LTC694-3.3
廠商： Linear Technology Corporation
英文描述： 3.3V Microprocessor Supervisory Circuits(3.3VμP監(jiān)控電路)
中文描述： 3.3微處理器監(jiān)控電路（3.3VμP監(jiān)控電路）
文件頁數(shù)： 3/16頁
文件大?。?/td> 143K
代理商： LTC694-3.3
3
LTC 694-3.3/LTC 695-3.3
ELECTRICAL C
range, otherwise specifications are at T
A
= 25
°
C. V
CC
= 3.3V, V
BATT
= 2V, unless otherwise noted.
HARA TERISTICS
The
G
denotes specifications which apply over the operating temperature
PARAMETER
Battery Back-Up Switching
Operating Voltage Range
CONDITIONS
MIN
TYP
MAX
UNITS
V
CC
V
BATT
I
OUT
= 1mA
G
G
3.0
1.5
5.50
2.75
V
V
V
V
V
V
V
OUT
Output Voltage
V
CC
– 0.1
V
CC
– 0.2
V
CC
– 0.8
V
BATT
– 0.1
V
CC
– 0.01
V
CC
– 0.01
V
CC
– 0.4
V
BATT
– 0.02
0.2
0.2
0.04
0.04
G
I
OUT
= 50mA
I
OUT
= 250
μ
A, V
CC
< V
BATT
I
OUT
≤
50mA, V
CC
= 3.6V
G
V
OUT
in Battery Back-Up Mode
Supply Current (Exclude I
OUT
)
G
0.6
1.0
1
5
0.02
0.10
mA
mA
μ
A
μ
A
μ
A
μ
A
mV
mV
G
Supply Current in Battery Back-Up Mode
V
CC
= 0V, V
BATT
= 2V
G
Battery Standby Current (+ = Discharge, – = Charge)
3.6V > V
CC
> V
BATT
+ 0.2V
–0.02
–0.10
G
Battery Switchover Threshold (V
CC
– V
BATT
)
Power Up
Power Down
70
50
Battery Switchover Hysteresis
BATT ON Output Voltage (Note 4)
BATT ON Output Short-Circuit Current (Note 4)
20
mV
I
SINK
= 800
μ
A
BATT ON = V
OUT
, Sink Current
BATT ON = 0V, Source Current
G
0.3
V
25
1
mA
μ
A
G
0.5
25
Reset and Watchdog Timer
Reset Voltage Threshold
G
2.8
2.9
3.0
V
Reset Threshold Hysteresis
Reset Active Time
40
200
200
1.6
1.6
100
100
mV
ms
ms
sec
sec
ms
ms
OSC SEL HIGH, V
CC
= 3V
160
140
1.2
1.0
80
70
4032
960
240
280
2.0
2.25
120
140
4097
1025
G
Watchdog Time-Out Period, Internal Oscillator
Long Period, V
CC
= 3V
G
Short Period, V
CC
= 3V
G
Watchdog Time-Out Period, External Clock (Note 5)
Long Period, V
CC
= 3V
Short Period, V
CC
= 3V
G
G
Clock
Cycles
ms/V
ms/V
ms/V
Reset Active Time PSRR
Watchdog Time-Out Period PSRR, Internal OSC
4
2
32
Short Period
Long Period
V
IL
= 0.4V, V
IH
= 3V
I
SINK
= 10
μ
A, V
CC
= 1V
I
SINK
= 400
μ
A, V
CC
= 2.8V
I
SOURCE
= 0.1
μ
A, V
CC
= 3V
I
SINK
= 400
μ
A, V
CC
= 3V
I
SOURCE
= 0.1
μ
A, V
CC
= 2.8V
Output Source Current
Output Sink Current
Minimum WDI Input Pulse Width
RESET Output Voltage at V
CC
= 1V
RESET and LOW LINE Output Voltage (Note 4)
G
200
ns
mV
G
4
200
0.3
G
G
V
V
V
V
2.3
RESET and WDO Output Voltage (Note 4)
G
G
0.3
2.3
1
RESET, RESET, WDO, LOW LINE
Output Short-Circuit Current (Note 4)
G
3
9
25
μ
A
mA
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