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LTC3803 数据表(PDF) 4 Page - Linear Technology

部件名 LTC3803
功能描述  Constant Frequency Current Mode Flyback DC/DC Controller in ThinSOT
Download  12 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC3803 数据表(HTML) 4 Page - Linear Technology

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4
LTC3803
3803i
TYPICAL PERFOR A CE CHARACTERISTICS
ICC Supply Current
vs Temperature
VCC Shunt Regulator Voltage
vs Temperature
VCC Undervoltage Lockout
Thresholds vs Temperature
TEMPERATURE (
°C)
–50
5.0
5.5
6.5
7.0
7.5
10.0
8.5
–10
30
50
3803 G07
6.0
9.0
9.5
8.0
–30
10
80
90
110
VTURNON
VTURNOFF
TEMPERATURE (
°C)
–50
9.0
9.1
9.3
9.4
9.5
10.0
9.7
–10
30
50
3803 G08
9.2
9.8
9.9
9.6
–30
10
70
90
110
ICC = 25mA
ICC = 1mA
TEMPERATURE (
°C)
–50
215
220
230
235
240
265
250
–10
30
50
3803 G08
225
255
260
245
–30
10
70
90
110
VCC = 8V
VITH/RUN = 1.3V
ITH/RUN Shutdown Threshold
vs Temperature
Start-Up ICC Supply Current
vs Temperature
TEMPERATURE (
°C)
–50
0
10
20
30
40
–10
30
70
110
3803 G10
50
60
–30
10
50
90
VCC = VTURNON – 0.1V
TEMPERATURE (
°C)
–50
300
350
400
70
90
3803 G11
250
200
–10
10
–30
30
50
110
150
100
450
ITH/RUN Start-Up Current Source
vs Temperature
TEMPERATURE (
°C)
–50
0
100
200
300
400
–10
30
70
110
3803 G12
500
600
–30
10
50
90
VCC = VTURNON + 0.1V
VITH/RUN = 0V
Soft-Start Time vs Temperature
Peak Current Sense Voltage
vs Temperature
TEMPERATURE (
°C)
–50
100
110
110
3803 G13
90
80
–10
30
70
–30
10
50
90
120
95
105
85
115
VCC = 8V
TEMPERATURE (
°C)
–50
2.0
3.0
110
3803 G14
1.0
0
–10
30
70
–30
10
50
90
4.0
1.5
2.5
0.5
3.5


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