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LT1248CS データシート(PDF) 5 Page - Linear Technology

部品番号 LT1248CS
部品情報  Power Factor Controller
PDF  12 Pages
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メーカー  LINER [Linear Technology]
ホームページ  http://www.linear.com
Logo LINER - Linear Technology

LT1248CS データシート(HTML) 5 Page - Linear Technology

  LT1248CS Datasheet HTML 1Page - Linear Technology LT1248CS Datasheet HTML 2Page - Linear Technology LT1248CS Datasheet HTML 3Page - Linear Technology LT1248CS Datasheet HTML 4Page - Linear Technology LT1248CS Datasheet HTML 5Page - Linear Technology LT1248CS Datasheet HTML 6Page - Linear Technology LT1248CS Datasheet HTML 7Page - Linear Technology LT1248CS Datasheet HTML 8Page - Linear Technology LT1248CS Datasheet HTML 9Page - Linear Technology Next Button
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5
LT1248
CC
HARA TERISTICS
A
TYPICALPERFOR
CE
GTDR Rise and Fall Time
MOUT VOLTAGE (V)
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
–3.5
–4.0
1248 G15
2.4
1.2
0
–1.2
–2.4
TJ = 125°C
TJ = 25°C
TJ = –55°C
Start-Up Supply Current vs
Supply Voltage
SUPPLY VOLTAGE (V)
0
550
500
450
400
350
300
250
200
150
100
50
0
1248 G09
20
125
°C
–55
°C
25
°C
4
812
16
26
10
14
18
Frequency vs RSET and CSET
Shutdown Mode Supply Current
and Reference Voltage
Synchronization and Shutdown
Thresholds at EN/SYNC Pin
CSET CAPACITANCE (pF)
200
500
450
400
350
300
250
200
150
100
50
0
1248 G10
1400
2200
600
1000
1800
RSET = 10k
RSET = 15k
RSET = 20k
RSET = 30k
CSET CAPACITANCE (pF)
200
1.00
0.99
0.98
0.97
0.96
0.95
0.94
0.93
0.92
0.91
0.90
1248 G11
1400
2200
600
1000
1800
RSET = 10k
RSET = 15k
RSET = 20k
RSET = 30k
EN/SYNC VOLTAGE (V)
0
–44
–40
–36
–32
–28
–24
–20
–16
–12
–8
–4
0
1248 G13
10
5
TJ = 125°C
12
3
4
67
8
9
TJ = 25°C
TJ = – 55°C
SHUTDOWN
THRESHOLD
SYNCHRONIZATION
THRESHOLD
SS VOLTAGE (V)
0
–22
–20
–18
–16
–14
–12
–10
–8
–6
–4
–2
0
1248 G14
TJ = 25°C
TJ = 125°C
TJ = –55°C
4
8
MOUT Pin Characteristics
SS Pin Characteristics
GTDR Maximum Duty Cycle vs
RSET and CSET
LOAD CAPACITANCE (nF)
0
400
300
200
100
0
10
20
30
40
1248 G08
50
RISE TIME
NOTE: GTDR SLEWS
BETWEEN 1V AND 16V
FALL TIME
SUPPLY VOLTAGE (V)
0
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
1248 G12
32
16
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
EN/SYNC
≤ 1.8V
REFERENCE VOLTAGE
TJ ≤ 125°C
TJ = 125°C
–55
°C ≤ TJ ≤ 25°C
SUPPLY CURRENT



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