参数资料
型号: 750108
厂商: Wurth Electronics Inc
文件页数: 5/30页
文件大小: 0K
描述: BOARD EVAL FOR LT3748
设计资源: LT3748 Design Schematic/Tips
标准包装: 1
主要目的: DC/DC,步降
输出及类型: 1,隔离
功率 - 输出: 30W
输出电压: 12V
电流 - 输出: 2.5A
输入电压: 22 ~ 75 V
稳压器拓扑结构: 回扫
板类型: 完全填充
已供物品:
已用 IC / 零件: LT3748
相关产品: LT3748HMS#TRPBF-ND - IC REG CTRLR FLYBK ISO CM 16MSOP
LT3748HMS#PBF-ND - IC REG CTRLR FLYBK ISO CM 16MSOP
LT3748IMS#TRPBF-ND - IC REG CTRLR FLYBK ISO CM 16MSOP
LT3748IMS#PBF-ND - IC REG CTRLR FLYBK ISO CM 16MSOP
LT3748EMS#TRPBF-ND - IC REG CTRLR FLYBK ISO CM 16MSOP
LT3748EMS#PBF-ND - IC REG CTRLR FLYBK ISO CM 16MSOP
其它名称: 732-3308
LT3748
TYPICAL PERFORMANCE CHARACTERISTICS
EN/UVLO Threshold
T A = 25°C, unless otherwise noted.
3.0
EN/UVLO Current vs Temperature
1.40
vs Temperature
0.9
TC Pin Voltage vs Temperature
2.5
2.0
1.5
V EN/UVLO = 1.1V
V EN/UVLO = 0.9V
1.35
1.30
1.25
1.20
0.8
0.7
0.6
0.5
0.4
1.0
0.5
1.15
1.10
1.05
0.3
0.2
0.1
0
–50 –25
0
V EN/UVLO = 1.3V
25 50 75
100 125 150
1.00
–50 –25
0
25
50
75
100 125 150
0
–50 –25
0
25
50
75
100 125 150
200
TEMPERATURE (°C)
3748 G10
Error Amplifier Transconductance
vs Temperature
60
TEMPERATURE (°C)
Error Amplifier Output Current
vs R REF Pin Voltage
3748 G11
160
TEMPERATURE (°C)
SENSE Pin Threshold
vs Temperature
3748 G12
190
180
170
160
150
140
130
50
40
30
20
10
0
–10
–20
140
120
100
80
60
OVERCURRENT
V C = 2.2V
120
110
V IN = 100V
V IN = 6V
–30
–40
–50
150°C
100°C
25°C
–50°C
40
20
V C = 0.2V
100
–50 –25
0
25
50
75
100 125 150
–60
0
0.5
1.0
1.5
2.0
2.5
0
–50 –25
0
25
50
75
100 125 150
TEMPERATURE (°C)
3748 G13
Maximum Discontinuous Off-Time
vs Temperature
V REF (V)
3748 G14
GATE Rise and Fall Time vs Charge
TEMPERATURE (°C)
GATE Rise and Fall Time
vs INTV CC Voltage
3748 G15
30
29
28
27
26
50
40
AVERAGE
CURRENT
2.0
1.5
1.0
0.5
25
20
15
C GATE = 3.3nF
t r , t f 10% TO 90%
FALLING
RISING
25
RISE TIME
24
30
FALL TIME
0
10
23
20
22
21
20
–50 –25
0
25
50
75
100 125 150
10
0
0
20
Q=C?V
V INTVCC = 7V
t r , t f 10% TO 90%
40 60 80 100 120
5
0
0
5
10
15
20
TEMPERATURE (°C)
3748 G16
TOTAL GATE CHARGE (nC)
3748 G17
V INTVCC (V)
3748 G18
3748fa
5
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