LM34936
- Single inductor buck-boost controller for step-up/step-down DC/DC conversion
- Wide VIN: 4.2 V (2.5 V with bias) to 30 V (42-V maximum)
- Flexible VOUT: 0.8 V to 30 V
- VOUT short protection
- High efficiency buck-boost transition
- Adjustable switching frequency
- Optional frequency sync and dithering
- Integrated 2-A MOSFET gate drivers
- Cycle-by-cycle current limit and optional hiccup
- Optional input or output average current limiting
- Programmable lnput UVLO and soft start
- Power good and output overvoltage protection
- Available in QFN-28 package
- Create a custom design using the LM34936 with the WEBENCH Power Designer
The LM34936 is a synchronous four-switch buck-boost DC/DC controller capable of regulating the output voltage at, above, or below the input voltage. The LM34936 operates over a wide input voltage range of 4.2 V to 30 V (42-V absolute maximum) to support a variety of applications.
The LM34936 employs current-mode control both in buck and boost modes of operation for superior load and line regulation. The switching frequency is programmed by an external resistor and can be synchronized to an external clock signal.
The device also features a programmable soft-start function and offers protection features including cycle-by-cycle current limiting, input undervoltage lockout (UVLO), output overvoltage protection (OVP), and thermal shutdown. In addition, the LM34936 features optional average input or output current limiting, optional spread spectrum to reduce peak EMI, and optional hiccup mode protection in sustained overload conditions.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | LM34936 30-V Wide VIN Synchronous 4-Switch Buck-Boost Controller datasheet (Rev. A) | PDF | HTML | 2021. 8. 13 | |
| 인증서 | LM34936EVM EU Declaration of Conformity (DoC) | PDF | HTML | 2023. 11. 14 | ||
| 기술 문서 | Adjusting VOUT in USB Type-C™ and wireless charging applications, part 2 | PDF | HTML | 2020. 2. 18 | ||
| 기술 문서 | Adjusting VOUT in USB Type-C™ and wireless charging applications, part 1 | PDF | HTML | 2020. 2. 10 | ||
| 기술 문서 | Four-switch buck-boost layout tip No. 4: routing gate-drive and return paths | PDF | HTML | 2019. 2. 20 | ||
| 기술 문서 | Four-switch buck-boost layout tip No. 3: separating differential sense lines from | PDF | HTML | 2017. 3. 2 | ||
| 기술 문서 | Four-switch buck-boost layout tip No. 2: optimizing hot loops in the power stage | PDF | HTML | 2017. 2. 23 | ||
| 기술 문서 | Four-switch buck-boost layout tip No. 1: identifying the critical parts for layout | PDF | HTML | 2017. 2. 20 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
LM34936EVM — LM34936 평가 모듈
LM34936-BUCK-BOOST-QUICKSTART-TOOL — LM34936 Buck-Boost Quickstart Tool
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| VQFN (RHF) | 28 | Ultra Librarian |
주문 및 품질
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.