LM3478Q-Q1
- LM3478Q-Q1 is AEC-Q100 qualified and manufactured on an automotive grade flow
- 8-lead VSSOP-8
- Internal push-pull driver with 1A peak current capability
- Current limit and thermal shutdown
- Frequency compensation optimized with a capacitor and a resistor
- Internal soft start
- Current mode operation
- Undervoltage lockout with hysteresis
- Key specifications:
- Wide supply voltage range of 2.97V to 40V
- 100kHz to 1MHz adjustable clock frequency
- ±2.5% (overtemperature) internal reference
- 10µA shutdown current (overtemperature)
- Create a custom design using the LM3478Q-Q1 with the WEBENCH Power Designer
The LM3478Q-Q1 is a versatile Low-Side N-Channel MOSFET controller for switching regulators. It is suitable for use in topologies requiring a low side MOSFET, such as boost, flyback, SEPIC, etc. Moreover, the LM3478Q-Q1 can be operated at extremely high switching frequency in order to reduce the overall solution size. The switching frequency of the LM3478Q-Q1 can be adjusted to any value between 100kHz and 1MHz by using a single external resistor. Current mode control provides superior bandwidth and transient response, besides cycle-by-cycle current limiting. Output current can be programmed with a single external resistor.
The LM3478Q-Q1 has built in features such as thermal shutdown, short-circuit protection, over voltage protection, etc. 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.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | LM3478Q-Q1 High-Efficiency Controller for Boost, SEPIC and Flyback DC-DC Converters datasheet (Rev. A) | PDF | HTML | 2025. 6. 2 | |
| Application brief | Avoiding Pulse Skip Operation at Light Load Conditions for Asynchronous Boost Converter Designs | PDF | HTML | 2025. 9. 16 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
FLYBUCK-FLYBACK-DESIGN-CALC — Flybuck / Flyback Calculator
이 툴은 전원 공급 장치 엔지니어가 사양에 따라 올바른 절연 DC-DC 토폴로지를 선택하는 데 도움이 됩니다. 선택한 토폴로지에 따라 계산기는 설계에 적합한 IC도 추천합니다.
LM3478-88-BOOST-CALC — LM3478-88 quick start calculator for boost
LM3478-88-FLYBACK-CALC — LM3478-88 quick start calculator for Flyback
LM3478-88-SEPIC-CALC — LM3478-88 quick start calculator for SEPIC
PMP9382 — 오토모티브 애플리케이션(E-Call)을 위한 고효율 낮은 Vin 30W 부스트 컨버터 레퍼런스 디자인
PMP9382 is a low Vin boost converter utilizing the automotive grade LM3478Q-Q1 controller. This design starts at a diode drop above the minimum input voltage of 2.97V (~3.4V) to a maximum of 6V in. Once the power supply is enabled and output is present, this design will work down to 2V input (...)
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| VSSOP (DGK) | 8 | Ultra Librarian |
주문 및 품질
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.