LM3017
- Fully Compliant to Thunderbolt™ Technology Specifications
- True Shutdown for Short-Circuit Protection
- Input Side Current Limit
- Single Enable Pin With Three Modes of Operation: Boost, Pass-Through, or Shutdown
- Built-in Charge Pump for High-Side NFET Disconnect Switch
- 1-A Push-Pull Driver for Low-Side NFET
- Peak Current Mode Control
- Simple Slope Compensation
- Protection Features: Thermal Shutdown, Cycle-by-Cycle Current Limit, Short-Circuit Protection, Output Overvoltage Protection, and Latch-Off
- Internal Soft Start
- Input Voltage Range: 5 V to 18 V
- 600-kHz Fixed Frequency Operation
- ±1% Reference Voltage Accuracy Over Temperature
- Low Shutdown Current (< 1 µA), 40 nA Typical
- 2.4 mm × 2.7 mm × 0.8 mm, 10-Pin WQFN Package
The LM3017 device is a versatile low-side NFET controller incorporating true shutdown and input side current limiting. The LM3017 is designed for simple implementation of boost conversions in Thunderbolt™ Technology. The LM3017 can also be configured for flyback or SEPIC designs. The input voltage range of 5 V to 18 V accommodates a two- or three-cell lithium ion battery or a 12-V rail. The enable pin accepts a single input to drive three different modes of operation: boost, pass-through, or shutdown mode. The LM3017 draws very low current in shutdown mode, typically 40 nA from the input supply.
The LM3017 provides an adjustable output to drive the Power Load Switch or MUX for the host Thunderbolt™ port. The ability to drive an external high-side NMOS provides for true isolation of the load from the input. Current limiting on the input ensures that inrush and short-circuit currents are always under control. The LM3017 incorporates built-in thermal shutdown, cycle-by-cycle current limit, short-circuit protection, output overvoltage protection, and soft start. It is available in a 10-pin WQFN package.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | LM3017 High Efficiency Low-Side Controller With True Shutdown datasheet (Rev. D) | PDF | HTML | 2016. 9. 30 | |
| 애플리케이션 노트 | Automated Frequency Response Analyzer | 2013. 10. 9 |
설계 및 개발
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LM3017EVM — LM3017 트루 셧다운 기능을 제공하는 고효율 저압측 컨트롤러 평가 모듈
The LM3017EVM evaluation module (EVM) provides the design engineer with a fully functional asynchronous boost converter to evaluate the Texas Instruments LM3017LE boost controller IC. The EVM provides 15V output at up to 1A current from an 8V to 12V input. This EVM demonstrates the flexibility of (...)
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.
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| WQFN (NKL) | 10 | Ultra Librarian |