参数资料
型号: LT3757MPMSE#PBF
厂商: Linear Technology
文件页数: 6/36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.
7.4
INTV CC vs Temperature
90
80
INTV CC Minimum Output Current
vs V IN
T J = 150°C
7.3
INTV CC Load Regulation
V IN = 8V
7.3
70
60
7.2
7.2
7.1
50
40
30
20
INTV CC = 6V
INTV CC = 4.5V
7.1
7
6.9
10
7.0
–75 –50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3757 G13
0
0
5
10
15
20
V IN (V)
25
30
35 40
3757 G14
6.8
0
10
20 30 40 50
INTV CC LOAD (mA)
60 70
3757 G15
7.30
INTV CC Line Regulation
700
600
INTV CC Dropout Voltage
vs Current, Temperature
V IN = 6V
150°C
90
80
Gate Drive Rise
and Fall Time vs C L
INTV CC = 7.2V
7.25
7.20
500
400
300
125°C
75°C
25°C
0°C
70
60
50
40
RISE TIME
FALL TIME
7.15
200
100
–55°C
30
20
10
7.10
0
5
10
15
20
25
30
35
40
0
0
5
10
15
20
0
0
5
10
15
20
25
30
V IN (V)
3757 G16
INTV CC LOAD (mA)
3757 G17
C L (nF)
3757 G18
Gate Drive Rise
and Fall Time vs INTV CC
Typical Start-Up Waveforms
FBX Frequency Foldback
Waveforms During Overcurrent
30
25
C L = 3300pF
RISE TIME
V IN = 12V
V OUT
10V/DIV
V IN = 12V
20
FALL TIME
V OUT
5V/DIV
V SW
20V/DIV
15
10
I L1A + I L1B
5A/DIV
I L1A + I L1B
5A/DIV
5
2ms/DIV
3757 G20
50μs/DIV
3757 G21
0
3
6
9
12
15
PAGE 31 CIRCUIT
PAGE 31 CIRCUIT
INTV CC (V)
3757 G19
3757afd
6
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