LTC692IN8 查看數據表（PDF） - Linear Technology
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LTC692IN8 Datasheet PDF : 20 Pages
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LTC692/LTC693
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = full operating range, VBATT = 2.8V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Watchdog Time-Out Period, Internal Oscillator Long Period, VCC = 5V
1.2
l
1.0
1.6
2.00
sec
1.6
2.25
sec
Short Period, VCC = 5V
80
100
120
ms
l
70
100
140
ms
Watchdog Time-Out Period, External Clock
(Note 6)
Long Period
Short Period
4032
4097
Clock
960
1025
Cycles
Reset Active Time PSRR
1
ms/V
Watchdog Time-Out Period PSRR, Internal OSC
1
ms/V
Minimum WDI Input Pulse Width
RESET Output Voltage at VCC = 1V
RESET and LOW LINE Output Voltage
(Note 4)
RESET and WDO Output Voltage
(Note 4)
RESET, RESET, WDO, LOW LINE Output
Short-Circuit Current (Note 4)
VIL = 0.4V, VIH = 3.5V
ISINK = 10μA, VCC = 1V
ISINK = 1.6mA, VCC = 4.25V
ISOURCE = 1μA, VCC = 5V
ISINK = 1.6mA, VCC = 5V
ISOURCE = 1μA, VCC = 4.25V
Output Source Current
Output Sink Current
l
200
ns
4
200
mV
0.4
V
3.5
V
0.4
V
3.5
V
1
3
25
μA
25
mA
WDI Input Threshold
Logic Low
Logic High
0.8
V
3.5
V
WDI Input Current
WDI = VOUT
WDI = 0V
l
4
50
μA
l
–50
–8
μA
Power-Fail Detector
PFI Input Threshold
PFI Input Threshold PSRR
VCC = 5V
l
1.25
1.3
1.35
V
0.3
mV/V
PFI Input Current
PFO Output Voltage (Note 4)
PFO Short-Circuit Source Current
(Note 4)
ISINK = 3.2mA
ISOURCE = 1μA
PFI = High, PFO = 0V
PFI = Low, PFO = VOUT
±0.01
±25
nA
0.4
V
3.5
V
1
3
25
μA
25
mA
PFI Comparator Response Time (Falling)
PFI Comparator Response Time (Rising)
(Note 4)
ΔVIN = –20mV, VOD = 15mV
ΔVIN = 20mV, VOD = 15mV with 10kΩ
Pull-Up
2
μs
40
μs
8
μs
Chip Enable Gating
CE IN Threshold
CE IN Pull-Up Current (Note 7)
CE OUT Output Voltage
CE Propagation Delay
CE OUT Output Short-Circuit Current
VIL
VIH
ISINK = 3.2mA
ISOURCE = 3mA
ISOURCE = 1μA, VCC = 0V
VCC = 5V, CL = 20pF
Output Source Current
Output Sink Current
2.0
3
VOUT – 1.50
VOUT – 0.05
20
l
20
30
35
0.8
V
V
μA
0.4
V
V
V
35
ns
45
ns
mA
mA
0692fa
4
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