参数资料
型号: LT1243IS8#TR
厂商: Linear Technology
文件页数: 4/16页
文件大小: 0K
描述: IC REG CTRLR ISO PWM CM 8-SOIC
标准包装: 2,500
PWM 型: 电流模式
输出数: 1
频率 - 最大: 500kHz
占空比: 96%
电源电压: 8.2 V ~ 25 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 100°C
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
包装: 带卷 (TR)
LT1241 Series
TYPICAL PERFOR A CE C HARA C TERISTICS
Undervoltage Lockout –
Undervoltage Lockout –
11
Undervoltage Lockout – LT1241
17
LT1242, LT1244
START-UP THRESHOLD
11
LT1243, LT1245
10
9
START-UP THRESHOLD
16
15
10
9
START-UP THRESHOLD
8
MINIMUM OPERATING VOLTAGE
11
8
MINIMUM OPERATING VOLTAGE
MINIMUM OPERATING VOLTAGE
7
10
7
6
–50 –25
0
25
50
75
100
125
9
–50 –25
0
25
50
75
100
125
6
–50 –25
0
25
50
75
100
125
200
TEMPERATURE ( ° C)
Start-Up Current
LT1241 ? TPC01
200
TEMPERATURE ( ° C)
Start-Up Current
LT1241 ? TPC02
10
TEMPERATURE ( ° C)
Supply Current
LT1241 ? TPC03
150
START-UP
THRESHOLD
LT1243/5
LT1241
LT1242/4
180
160
140
120
9
8
V CC = 15V
R T = 10k
C T = 3300pF
100
100
80
60
7
50
T J = 25 ° C
40
20
6
0
0
2
4
6
8
10
12
14 16
18
0
–50 –25
0
25
50
75
100
125
5
–50 –25
0
25
50
75
100
125
10
V CC (V)
Supply Current vs
Oscillator Frequency
LT1241 ? TPC04
60
TEMPERATURE ( ° C)
Oscillator Frequency
LT1241 ? TPC05
8.7
TEMPERATURE ( ° C)
Oscillator Sink Current
LT1241 ? TPC06
9
8
7
LT1242, LT1243
LT1241, LT1244, LT1245
58
56
54
V CC = 5V
R T = 10k
C T = 3300pF
8.6
8.5
8.4
V PIN4 = 2V
6
5
4
3
52
50
48
46
8.3
8.2
8.1
8.0
2
1
V CC = 15V
R T = 10k
C L = 15pF
44
42
7.9
7.8
0
10k
100k
1M
40
–50 –25
0
25
50
75
100
125
7.7
–50 –25
0
25
50
75
100
125
4
OSCILLATOR FREQUENCY (Hz)
LT1241 ? TPC18
TEMPERATURE ( ° C)
LT1241 ? TPC07
TEMPERATURE ( ° C)
LT1241 ? TPC08
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