317B 查看數據表（PDF） - Linear Technology
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317B Datasheet PDF : 16 Pages
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LT1317/LT1317B
TYPICAL PERFOR A CE CHARACTERISTICS
Oscillator Frequency
700
650
25°C
600
–40°C
85°C
Burst Mode Current Limit (LT1317)
800
VIN = 2V
L = 10µH
600
400
550
200
500
02
4
68
INPUT VOLTAGE
Switch Current Limit
1200
10 12
1317 TPC01
1000
800
TYPICAL
600
MINIMUM (25°C)
400
200
0
20
40
60
DUTY CYCLE (%)
80 100
1317 TPC04
Feedback Voltage
1.25
1.24
1.23
1.22
1.21
1.20
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
1317 TPC07
0
0
20
40
60
80 100
DUTY CYCLE (%)
1317 TPC02
LBI Input Bias Current
6
5
4
3
2
1
0
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
1317 TPC05
LBI Reference Voltage
203
202
201
200
199
198
197
196
195
–50
–25 0 25 50
TEMPERATURE (°C)
75 100
1317 TPC08
Switch Current Limit,
Duty Cycle = 30%
1000
900
800
700
600
500
–50 –25 0 25 50
TEMPERATURE (°C)
75 100
1317 TPC03
Switch Voltage Drop (VCESAT)
700
600
85°C
500
400
25°C
–40°C
300
200
100
0
0
0.2 0.4 0.6 0.8
1
SWITCH CURRENT (A)
1317 TPC06
Quiescent Current, SHDN = 2V
110
100
90
80
70
60
50
40
30
–50
–25 0 25 50
TEMPERATURE (°C)
75 100
1317 TPC09
4
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