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LT1786FCS 数据表(PDF) 6 Page - Linear Technology

部件名 LT1786FCS
功能描述  SMBus Programmable CCFL Switching Regulator
PDF  20 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LT1786FCS 数据表(HTML) 6 Page - Linear Technology

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LT1786F
TYPICAL PERFORMANCE CHARACTERISTICS
TEMPERATURE (
°C)
0.940
0.980
0.960
1.020
1.000
1.060
1.040
–25
25
75
125
1786 G21
175
–50
–75
0
50
100
150
High-Side Sense Null Current
vs Temperature
TEMPERATURE (
°C)
–75
0.120
0.160
125
1786 G22
0.080
0.040
0.000
–25
25
75
175
0.100
0.140
0.060
0.020
100
–50
0
50
150
High-Side Sense Null Current Line
Regulation vs Temperature
VSW Current Limit vs Duty Cycle
DUTY CYCLE (%)
0
0
0.5
1.5
2.0
2.5
20
40
50
90
1786 G24
1.0
10
30
60
70
80
T = 25
°C
T = 125
°C
MINIMUM
T = 0
°C
TEMPERATURE (
°C)
–50
–75
0
–25
50
25
75 100 125 150 175
1786 G26
104
103
102
101
100
99
98
97
96
V(IOUT) = 0.465V
Full-Scale Output Current
vs Temperature
CCFL ISW (A)
0
60
80
110
100
1.6
1786 G25
40
20
50
70
90
30
10
0
0.4
0.8
1.2
0.2
1.8
0.6
1.0
1.4
2.0
Forced Beta vs ISW on VSW
TEMPERATURE (
°C)
6
8
10
1787 G19
4
2
0
–75
125 150
–25 0
–50
25 50
75 100
175
BULB Input Bias Current
vs Temperature
High-Side Sense Supply Current
vs Temperature
VSW Sat Voltage
vs Switch Current
TEMPERATURE (
°C)
–75
110
130
150
140
120
100
80
60
125 150
1786 G20
90
70
50
–25 0
–50
25 50
75 100
175
SWITCH CURRENT (A)
0
0.6
0.8
1.0
1.2
1787 G23
0.4
0.2
0.5
0.7
0.9
0.3
0.1
0
0.3
0.6
0.9
1.5
T = –5
°C
T = 125
°C
T = 25
°C



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