LM5008
- Operating Input Voltage Range: 6 V to 95 V
- Integrated 100-V, N-Channel Buck Switch
- Internal VCC Regulator
- No Loop Compensation Required
- Ultra-Fast Transient Response
- On-Time Varies Inversely With Line Voltage
- Operating Frequency Remains Constant With Varying Line Voltage and Load Current
- Adjustable Output Voltage
- Highly Efficient Operation
- Precision Internal Reference
- Low Bias Current
- Intelligent Current Limit Protection
- Thermal Shutdown
- 8-Pin VSSOP and WSON Packages
- Create a Custom Design Using the LM5008 With the WEBENCH® Power Designer
The LM5008 350-mA step-down switching converter features all of the functions needed to implement a low-cost and efficient buck regulator. This high-voltage converter has an integrated 100-V N-channel buck switch and operates over an input voltage range of 9 V to 95 V. The device is easy to implement and is provided in the 8-pin VSSOP and the thermally enhanced 8-pin WSON packages. The converter uses a hysteretic control scheme with a PWM on-time inversely proportional to VIN. This feature allows the operating frequency to remain relatively constant. The hysteretic control requires no loop compensation. An intelligent current limit is implemented with forced off-time, which is inversely proportional to VOUT. This scheme ensures short-circuit protection while providing minimum foldback. Other protection features include: thermal shutdown, VCC undervoltage lockout, gate drive undervoltage lockout, and maximum duty cycle limiter.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | LM5008 95-V, 350-mA, Constant On-Time DC/DC Buck Switching Regulator datasheet (Rev. I) | PDF | HTML | 2018. 10. 11 | |
| 애플리케이션 노트 | Stability Analysis and Design of COT Type-3 Ripple Circuit | 2019. 3. 20 | |||
| 선택 가이드 | Power Management Guide 2018 (Rev. R) | 2018. 6. 25 | |||
| 백서 | Wide VIN power management ICs simplify white paper (Rev. A) | 2013. 9. 19 | |||
| 애플리케이션 노트 | Analysis & Design of Hysteretic Constant Freq Buck Regr Using the LM5007 (Rev. B) | 2013. 4. 30 | |||
| 애플리케이션 노트 | Controlling Output Ripple & Achiev ESR Indep Constant On-Time Reg Designs (Rev. A) | 2013. 4. 23 | |||
| 애플리케이션 노트 | Boot Capacitor Regulation in LM25007 Constant-On-Time (COT) Converter (Rev. A) | 2013. 4. 23 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
LM5008EVAL — 100V 넓은 Vin 스텝다운 스위칭 레귤레이터 평가 모듈
LM5008 High Voltage (100V) Step Down Switching Regulator
LM5008QUICK-CALC — LM5008 빠른 시작 계산기
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| WSON (NGU) | 8 | Ultra Librarian |
| VSSOP (DGK) | 8 | Ultra Librarian |
주문 및 품질
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.