参数资料
型号: LT1952IGN-1#PBF
厂商: Linear Technology
文件页数: 6/28页
文件大小: 0K
描述: IC REG CTRLR ISO PWM CM 16-SSOP
标准包装: 100
PWM 型: 电流模式
输出数: 1
频率 - 最大: 560kHz
占空比: 90%
电源电压: 6.82 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 ~ 125°C
封装/外壳: 16-SSOP(0.154",3.90mm 宽)
包装: 管件
LT1952/LT1952-1
TYPICAL PERFORMANCE CHARACTERISTICS
V IN = 15V
1.25
1.24
1.23
1.22
1.21
FB Voltage vs Temperature
245
230
215
200
185
170
Switching Frequency
vs Temperature
V IN Shutdown Current
vs Temperature
500
450 SD_V SEC = 0V
400
350
300
250
200
150
1.20
–50
–25
0
25
50
75
100
125
155
–50
–25
0
25
50
75
100
125
100
–50
–25
0
25
50
75
100
125
TEMPERATURE (°C)
V IN Start-up Current
vs Temperature
1952 G01
TEMPERATURE (°C)
V IN I Q vs Temperature
1952 G02
TEMPERATURE (°C)
SD_V SEC Turn ON Threshold
vs Temperature
1952 G03
600
SD_V SEC = 1.4V
6.5
OC = OPEN
1.42
550
500
6.0
1.37
450
LT1952
5.5
400
5.0
1.32
350
300
250
LT1952-1
4.5
4.0
1.27
200
–50
–25
0
25
50
75
100
125
3.5
–50
–25
0
25
50
75
100
125
1.22
–50
–25
0
25
50
75
100
125
TEMPERATURE (°C)
SD_V SEC Pin Current
vs Temperature
1952 G04
TEMPERATURE (°C)
V IN Turn ON/OFF Voltage
vs Temperature
1952 G05
TEMPERATURE (°C)
COMP Active Threshold
vs Temperature
1952 G06
15
18
1.6
R ISENSE = 0k
10
5
PIN CURRENT BEFORE
PART TURN ON
16
14
12
10
LT1952 V IN TURN ON VOLTAGE
LT1952 V IN TURN OFF VOLTAGE
1.4
1.2
1.0
0.8
0.6
0.4
0
–50
–25
0
0mA PIN CURRENT AFTER
PART TURN ON
25 50 75 100
125
8
6
–50
LT1952-1 V IN ON
–25 0 25
LT1952-1 V IN OFF
50 75 100
125
0.2
0
–50
–25
0
25
50
75
100
125
TEMPERATURE (°C)
1952 G07
TEMPERATURE (°C)
1952 G08
TEMPERATURE (°C)
1952 G09
19521fe
6
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