LTC3725 - LTC3725是Single-Switch Forward Controller and Gate Driver
LTC3725是Linear公司的一款反激式、正激式和隔离式控制器产品，LTC3725是Single-Switch Forward Controller and Gate Driver，本站介绍了LTC3725的封装应用图解、特点和优点、功能等，并给出了与LTC3725相关的凌力尔特元器件型号供参考。
LTC3725 - Single-Switch Forward Controller and Gate Driver
LTC3725 - Single-Switch Forward Controller and Gate Driver - Linear Technology（凌力尔特）
功能描述
The LTC3725 is a controller for a single-switch forward converter and includes an on-chip gate driver.
For secondary-side control, combine the LTC3725 with the LTC3706 PolyPhase secondary-side synchronous forward controller to create a complete forward converter using a minimum of discrete parts. A proprietary scheme is used to multiplex gate drive signals across the isolation barrier through a tiny pulse transformer. The on-chip rectifier and the same pulse transformer provide gate drive bias power.
Alternatively, the LTC3725 can be used as a standalone voltage mode controller in a primary-side control architecture with optoisolator feedback. Voltage feedforward provides excellent line regulation and transient response.
特点
High Speed Gate Driver for Forward Converter On-Chip Rectifier and Self-Starting Architecture Eliminates Need for Separate Gate Drive Bias Supply Wide Input Voltage Supply Range: 9V and Up Linear Regulator Controller for Fast Start-Up Precision UVLO with Adjustable Hysteresis Overcurrent Protection Volt-Second Limit Prevents Transformer Core Saturation Voltage Feedforward for Fast Transient Response Available in 10-Lead MSOP Package应用
Isolated 48V Telecommunication Systems Internet Servers and Routers Distributed Power Step-Down Converters Automotive and Heavy Equipment以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）
| 器件型号 | 封装 | 温度 | 价格 (以 1 ~ 99 片为批量) | 价格 (以 1000 片为批量) |
| LTC3725EMSE | MS-10E | E | $3.66 | $2.56 |
| LTC3725EMSE#PBF | MS-10E | E | $3.66 | $2.56 |
| LTC3725EMSE#TR | MS-10E | E | | $2.62 |
| LTC3725EMSE#TRPBF | MS-10E | E | | $2.62 |
| LTC3725IMSE | MS-10E | I | $4.04 | $2.83 |
| LTC3725IMSE#PBF | MS-10E | I | $4.04 | $2.83 |
| LTC3725IMSE#TR | MS-10E | I | | $2.89 |
| LTC3725IMSE#TRPBF | MS-10E | I | | $2.89 |
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