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参数资料
| 型号： | LT3748HMS#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, PDSO12 |
| 封装： | LEAD FREE, PLASTIC, MSOP-16/12 |
| 文件页数： | 1/30页 |
| 文件大小： | 284K |
| 代理商： | LT3748HMS#PBF |
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LT3748
1
3748fa
FEATURES
APPLICATIONS
DESCRIPTION
100V Isolated
Flyback Controller
The LT3748 is a switching regulator controller specifically
designed for the isolated flyback topology and capable of
high power. It drives a low side external N-channel power
MOSFET from an internally regulated 7V supply. No third
winding or opto-isolator is required for regulation as the
part senses the isolated output voltage directly from the
primary-side flyback waveform.
The LT3748 utilizes boundary mode to provide a small
magnetic solution without compromising load regulation.
Operating frequency is set by load current and transformer
magnetizing inductance. The gate drive of the LT3748
combined with a suitable external MOSFET allow it to
deliver load power up to several tens of watts from input
voltages as high as 100V.
The LT3748 is available in a high voltage 16-lead MSOP
package with four leads removed.
25W, 12V Output, Isolated Telecom Supply
n 5V to 100V Input Voltage Range
n 1.9A Average Gate Drive Source and Sink Current
n Boundary Mode Operation
n No Transformer Third Winding or Opto-Isolator
Required for Regulation
n Primary-Side Winding Feedback Load Regulation
n VOUT Set with Two External Resistors
n INTVCC Pin for Control of Gate Driver Voltage
n Programmable Soft Start
n Programmable Undervoltage Lockout
n Available in MSOP Package
n Isolated Telecom Converters
n High Power Automotive Supplies
n Isolated Industrial Power Supplies
Output Load and Line Regulation
TYPICAL APPLICATION
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Protected by U.S. Patents, including 5438499 and 7471522.
EN/UVLO
TC
SS
RFB
RREF
VC
GND
INTVCC
LT3748
3748 TA01a
56.2k
2nF
VIN
36V TO 72V
VOUT
+
12V
2A
VOUT
–
VIN
4:1
412k
15.4k
10μF
3.8μH
60.8μH
100μF
GATE
SENSE
4700pF
4.7μF
6.04k
243k
0.033Ω
10k
LOAD CURRENT (A)
0
11.4
V
OUT
(V)
11.6
11.8
12.0
12.2
14.4
12.6
0.5
1.0
1.5
2.0
3748 TA01b
VIN = 72V
VIN = 48V
VIN = 36V
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PDF描述 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3748HMSTRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:100V Isolated Flyback Controller |
| LT3748IMS#PBF | 功能描述:IC REG CTRLR FLYBK ISO CM 16MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR) |
| LT3748IMS#TRPBF | 功能描述:IC REG CTRLR FLYBK ISO CM 16MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR) |
| LT3748IMSPBF | 制造商:Linear Technology 功能描述:100V Isolated Flyback Controller MSOP16 |
| LT3748IMSTRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:100V Isolated Flyback Controller |
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