LM3401
- Hysteretic Control for Speed and Simplicity
- Input Operating Range of 4.5V-35V
- 1.5MHz Maximum Switching Frequency
- Low 200mV Reference Voltage
- Programmable Current Limit
- High speed CMOS Compatible Enable/Dimming
- Adjustable Hysteresis
- Input UVLO
- No output Capacitor Required
- 8-pin VSSOP Package
All trademarks are the property of their respective owners.
The LM3401 is a switching controller designed to provide constant current to high power LEDs. The LM3401 drives an external P-MOSFET switch for step-down (Buck) regulators. The LM3401 delivers constant current within ±6% accuracy to a wide variety and number of series connected LEDs. Output current is adjusted with an external current sensing resistor to drive high power LEDs in excess of 1A.
For improved accuracy and efficiency, the LM3401 features dual-side hysteresis, very low reference voltage, and short propagation delay. A cycle by cycle current limit provides protection against over current and short circuit failures. Additional features include adjustable hysteresis and a CMOS compatible input pin for PWM dimming.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | LM3401 Hysteretic PFET Controller for High Power LED Drive datasheet (Rev. C) | 2013. 5. 2 | ||
| 백서 | Common LED Functions and LED Driver Design Considerations | 2020. 9. 21 | |||
| 애플리케이션 노트 | AN-1656 Design Challenges of Switching LED Drivers (Rev. A) | 2013. 5. 3 | |||
| 애플리케이션 노트 | AN-1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs Cool (Rev. A) | 2013. 4. 23 | |||
| 사용 설명서 | LM3401 MR16 Reference Design for Non-Dimming & Dimming LED Application Usr Guide | 2012. 1. 27 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
LM3401-MR16DEMO — 비 조광 및 조광 LED 애플리케이션을 위한 LM3401 MR16 전구 레퍼런스 디자인
This reference design was based on the released LM3401 evaluation board and associated application note AN-1657. The circuit and BOM was modified to optimize performance in MR16 solutions. A PCB was created that fits into the MR16 cavity. For fast bench set-up, the LM3401 evaluation board can be (...)
LM3401EVAL — LM3401 고전력 LED 드라이브를 위한 히스테리시스 PFET 컨트롤러 평가 모듈
The LM3401 is a switching buck regulator derived current source designed to drive a series string of high power, high brightness LEDs. The LM3401 controls an external P-FET, allowing the user to select a power device for the desired level of forward LED current. The LM3401 demo board can supply (...)
LED-CIE1931-COLOR-CALCULATOR — Accurately Plot LED Colour from a Power Spectrum (Excel)
Excel spreadsheet outlining LED color calculations performed in the article Accurately Plot LED Colour from a Power Spectrum by Donald Schelle. Includes calculations to plot LED color on a CIE 1931 xyY chart from its LED power spectrum.
LM3401DESIGN-CALC — LM3401 부품 계산기
| 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.