The LM3481 device is a versatile Low-Side N-FET high-performance controller for switching regulators. The device is designed for use in boost, SEPIC and flyback converters and topologies requiring a low-side FET as the primary switch. The LM3481 device can be operated at very high switching frequencies to reduce the overall solution size. The switching frequency of the LM3481 device can be adjusted to any value between 100kHz and 1MHz by using a single external resistor or by synchronizing it to an external clock. Current mode control provides superior bandwidth and transient response in addition to cycle-by-cycle current limiting. Current limit can be programmed with a single external resistor.
The LM3481 device has built-in protection features such as thermal shutdown, short-circuit protection and overvoltage protection. Power-saving shutdown mode reduces the total supply current to 5µA and allows power supply sequencing. Internal soft start limits the inrush current at start-up. Integrated current slope compensation simplifies the design and, if needed for specific applications, can be increased using a single resistor.
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
The LM3481 is a current mode, low side N channel FET controller. It can be utilized in numerous configurations including a Boost, Flyback or SEPIC (Single Ended Primary Inductor Converter). This evaluation board demonstrates the flexibility of the LM3481 in a boost topology providing 12 volt output (...)
This tool helps a power supply engineer to select the right isolated DC-DC topology based on the specifications. Depending on the topology chosen, the calculator also recommends the right IC for the design.
레퍼런스 디자인 선택 툴을 사용하여 애플리케이션 및 매개 변수에 가장 적합한 설계를 검토하고 식별할 수 있습니다.
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| VSSOP (DGS) | 10 | Ultra Librarian |
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.
The LM3481 quick start calculator for Flyback topology supports the initial calculation of the power stage and of the necessary external components for a Flyback converter using LM3481 as regulation IC.
The LM3481 Quickstart Calculator for Boost tool supports the initial calculation of the boost power stage and of the necessary external components for a boost converter using LM3481 as regulation IC.
Initial version
The LM3481 quick start calculator for SEPIC tool supports the initial calculation of the SEPIC power stage and of the necessary external components for a SEPIC converter using LM3481 as regulation IC.