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参数资料
| 型号： | 750108 |
| 厂商： | Wurth Electronics Inc |
| 文件页数： | 3/30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： | 板 |
| 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 |
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LT3748
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25°C. V IN = 10V, unless otherwise noted.
PARAMETER
Maximum to Minimum SENSE Threshold
CONDITIONS
l
MIN
5.2
TYP
6.6
MAX
8.2
UNITS
mV/mV
Ratio
SENSE Overcurrent Threshold
SENSE Input Bias Current
V C = 2.2V
V SENSE = 10mV (Note 3)
115
10
130
15
145
20
mV
μA
R REF Voltage
R REF Voltage Line Regulation
R REF Pin Bias Current
V C = 1.1V
5V < V IN < 100V
(Note 3)
l
l
1.20
1.195
1.223
0.005
35
1.24
1.245
0.025
500
V
V
%/V
nA
TC Current into R REF
Error Amplifier Voltage Gain
Error Amplifier Transconductance
V C Source Current
V C Sink Current
Flyback Comparator Trip Current
Minimum GATE Off-Time
Minimum GATE On-Time
Maximum Discontinuous Off-Time
Maximum GATE Off-Time
Maximum GATE On-Time
GATE Output Rise Time
GATE Output Fall Time
GATE Output Low (V OL )
GATE Output High (V OH )
R TC = 20k
Δ I = 10μA
V C = 1.1V, V RREF = 0.5V
V C = 1.1V, V RREF = 2V
Current into R FB Pin, R REF = 6.04k
V C = 0V
V RREF = 0.5V
V SENSE = 0V
C L = 3300pF, 10% to 90%
C L = 3300pF, 10% to 90%
V INTVCC – 0.05
27.5
115
155
–45
48
10
700
250
24
55
55
16
16
0.05
μA
V/V
μmhos
μA
μA
μA
ns
ns
μs
μs
μs
ns
ns
V
V
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LT3748E is guaranteed to meet performance specifications
from 0°C to 125°C junction temperature. Specifications over the –40°C
to 125°C operating junction temperature range are assured by design
characterization and correlation with statistical process controls. The
LT3748I is guaranteed over the full –40°C to 125°C operating junction
temperature range. The LT3748H is guaranteed over the full –40°C to
150°C operating junction temperature range. High junction temperatures
degrade operating lifetimes. Operating lifetime is derated at junction
temperatures greater than 125°C.
Note 3: Current flows out of the pin.
3748fa
3
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