LTC690 Просмотр технического описания (PDF) - Linear Technology
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LTC690 Datasheet PDF : 18 Pages
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LTC690/LTC691
LTC694/LTC695
TYPICAL PERFORMANCE CHARACTERISTICS
VOUT vs IOUT
5.00
4.95
4.90
4.85
VCC = 5V
VBATT = 2.8V
TA = 25°C
SLOPE = 5Ω
4.80
4.75
0
10
20
30
40
LOAD CURRENT (mA)
50
690 G01
VOUT vs IOUT
2.80
2.78
2.76
VCC = 0V
VBATT = 2.8V
TA = 25°C
SLOPE = 125Ω
2.74
2.72
0
100 200 300 400 500
LOAD CURRENT (μA)
690 G02
Power Failure Input Threshold
vs Temperature
1.308
VCC = 5V
1.306
1.304
1.302
1.300
1.298
1.296
1.294
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
690 G03
Reset Active Time
vs Temperature LTC690-1
58
VCC = 5V
56
Reset Active Time
vs Temperature LTC694-5
232
VCC = 5V
224
Reset Voltage Threshold
vs Temperature
4.66
4.65
54
216
4.64
52
208
4.63
50
48
46
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
690 G04
200
192
184
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
690 G05
4.62
4.61
4.60
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
690 G06
Power-Fail Comparator
Response Time
6
5
4
3
VPFI +
PFO
2
1.3V –
VCC = 5V
TA = 25°C
30pF
1
0
Power-Fail Comparator
Response Time
6
5
VCC = 5V
TA = 25°C
4
3
2
VPFI +
PFO
1
1.3V –
30pF
0
Power-Fail Comparator Response
Time with Pull-Up Resistor
6
5
VCC = 5V
TA = 25˚C
4
3
2
1
5V
VPFI +
10k
0
PFO
1.3V –
30pF
1.305V
1.285V
VPFI = 20mV STEP
01 2 34 567 8
TIME (μs)
690 G07
1.315V
1.295V
VPFI = 20mV STEP
0 20 40 60 80 100 120 140 160 180
TIME (μs)
690 G08
1.315V
1.295V
VPFI = 20mV STEP
0 2 4 6 8 10 12 14 16 18
TIME (μs)
690 G09
690fe
8
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