LM3424
- VIN range from 4.5 V to 75 V
- High-side adjustable current sense
- 2-Ω, 1-A peak MOSFET gate driver
- Input undervoltage and output overvoltage protection
- PWM and analog dimming
- Cycle-by-cycle current limit
- Programmable soft-start and slope compensation
- Programmable, synchronizable switching frequency
- Programmable thermal foldback
- Precision voltage reference
- Low-power shutdown and thermal shutdown
The LM3424 is a versatile high voltage N-channel MOSFET controller for LED drivers. It can be easily configured in buck, boost, buck-boost and SEPIC topologies. In addition, the LM3424 includes a thermal foldback feature for temperature management of the LEDs. This flexibility, along with an input voltage rating of 75 V, makes the LM3424 ideal for illuminating LEDs in a large family of applications.
Adjustable high-side current sense allows for tight regulation of the LED current with the highest efficiency possible. The LM3424 uses standard peak current-mode control providing inherent input voltage feed-forward compensation for better noise immunity. It is designed to provide accurate thermal foldback with a programmable foldback breakpoint and slope. In addition, a 2.45V reference is provided.
The LM3424 includes a high-voltage startup regulator that operates over a wide input range of 4.5 V to 75 V. The internal PWM controller is designed for adjustable switching frequencies of up to 2.0 MHz and external synchronization is possible. The controller is capable of high speed PWM dimming and analog dimming.
기술 자료
유형 | 직함 | 날짜 | ||
---|---|---|---|---|
* | Data sheet | LM3424 Constant Current N-channel Controller with Thermal Foldback For Driving LEDs datasheet (Rev. D) | PDF | HTML | 2019/07/31 |
Selection guide | Power Management Guide 2018 (Rev. R) | 2018/06/25 | ||
Technical article | Driving LEDs: topology matters | PDF | HTML | 2016/02/26 | |
Application note | AN-1656 Design Challenges of Switching LED Drivers (Rev. A) | 2013/05/03 | ||
EVM User's guide | AN-1967 LM3424 Buck-Boost Evaluation Board (Rev. A) | 2013/05/03 | ||
EVM User's guide | AN-1969 LM3424 Boost Evaluation Board (Rev. A) | 2013/05/03 | ||
Application note | AN-1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs Cool (Rev. A) | 2013/04/23 | ||
User guide | Ambient Light Adaptive LED Driver User Guide | 2012/01/27 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
LM3424BKBSTEVAL — LM3424 벅 부스트 평가 보드
This wide range evaluation board showcases the LM3424 NFET controller used with a buck-boost current regulator. It is designed to drive 4 to 10 LEDs at a maximum average LED current of 1A from a DC input voltage of 10 to 70V. The evaluation board showcases many of the LM3424 features including (...)
LM3424BSTEVAL — LM3424 부스트 평가 보드
This evaluation board showcases the LM3424 NFET controller used with a boost current regulator. It is designed to drive 9 to 12 LEDs at a maximum average LED current of 1A from a DC input voltage of 10 to 26V. The evaluation board showcases many of the LM3424 features including thermal foldback, (...)
PSPICE-FOR-TI — TI 설계 및 시뮬레이션 툴용 PSpice®
TI 설계 및 시뮬레이션 환경용 PSpice는 기본 제공 라이브러리를 이용해 복잡한 혼합 신호 설계를 시뮬레이션할 수 있습니다. 레이아웃 및 제작에 (...)
패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
---|---|---|
HTSSOP (PWP) | 20 | Ultra Librarian |
주문 및 품질
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
- 팹 위치
- 조립 위치
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.