参数资料
型号: LT3757MPMSE#PBF
厂商: Linear Technology
文件页数: 5/36页
文件大小: 0K
描述: IC REG CTRLR PWM CM 10-MSOP
标准包装: 50
PWM 型: 电流模式
输出数: 1
频率 - 最大: 1MHz
电源电压: 2.9 V ~ 40 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -55°C ~ 125°C
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)裸露焊盘
包装: 管件
LT3757/LT3757A
TYPICAL PERFORMANCE CHARACTERISTICS
T A = 25°C, unless otherwise noted.
Dynamic Quiescent Current
vs Switching Frequency
R T vs Switching Frequency
Normalized Switching Frequency
vs FBX
35
30
25
C L = 3300pF
1000
120
100
80
20
15
10
5
100
60
40
20
0
0 100 200 300 400 500 600 700 800 900 1000
10
0 100 200 300 400 500 600 700 800 900 1000
0
–0.8
–0.4
0 0.4 0.8
1.2
1.6
SWITCHING FREQUENCY (KHz)
Switching Frequency
vs Temperature
3757 G04
SWITCHING FREQUENCY (KHz)
3757 G05
SENSE Current Limit Threshold
vs Temperature
FBX VOLTAGE (V)
3757 G06
SENSE Current Limit Threshold
vs Duty Cycle
330
R T = 41.2K
120
115
320
310
115
110
300
290
280
110
105
105
100
270
–75 –50 –25
0
25
50 75 100 125 150
100
–75 –50 –25
0
25
50 75 100 125 150
95
0
20
40
60
80
100
TEMPERATURE (°C)
3757 G07
TEMPERATURE (°C)
3757 G08
DUTY CYCLE (%)
3757 G09
1.28
1.26
1.24
1.22
1.20
SHDN /UVLO Threshold
vs Temperature
SHDN /UVLO RISING
SHDN /UVLO FALLING
40
30
20
10
SHDN /UVLO Current vs Voltage
2.4
2.2
2.0
1.8
SHDN /UVLO Hysteresis Current
vs Temperature
1.18
–75 –50 –25
0
25
50 75 100 125 150
0
0
10 20 30
40
1.6
–75 –50 –25
0
25
50 75 100 125 150
TEMPERATURE (°C)
3757 G10
SHDN /UVLO VOLTAGE (V)
3757 G11
TEMPERATURE (°C)
3757 G12
3757afd
5
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