LM3489EVAL
히스테리시스 PFET 벅 컨트롤러(활성화 핀 포함)
LM3489EVAL
개요
The LM3489 is a high efficiency PFET switching regulator controller that can be used to quickly and easily develop a small, cost effective, switching buck regulator for a wide range of applications. The hysteretic control architecture provides for simple design without any control loop stability concerns using a wide variety of external components. The PFET architecture also allows for low component count as well as ultra-low dropout, and 100% duty cycle operation. Another benefit is high efficiency operation at light loads without an increase in output ripple. A dedicated Enable Pin (Enabled if left unconnected) provides a shutdown mode drawing only 7 µA.
특징
- Wide 4.5V to 35V input range
- 1.239V to VIN adjustable output range
- High efficiency 93%
- 1.3% ( 2% over temp) internal reference
- 100% duty cycle operation
- Maximum operation frequency > 1MHz
- Current limit protection
- Dedicated enable pin (on if unconnected)
- Shutdown mode draws on 7uA supply current
- MSOP-8
Applications
- Set-top Box
- DSL/Cable Modem
- PC/IA
- Auto PC
- TFT Monitor
- Battery Powered Portable Applications
- Distributed Power Systems
- Always On Power
- High Power LED Driver
주문 및 개발 시작
평가 보드
LM3489EVAL/NOPB — Hysteretic PFET Buck Controller with Enable Pin
LM3489EVAL/NOPB — Hysteretic PFET Buck Controller with Enable Pin
기술 자료
검색된 결과가 없습니다. 검색어를 지우고 다시 시도하십시오.
2개 모두 보기
| 유형 | 직함 | 최신 영어 버전 다운로드 | 날짜 | ||
|---|---|---|---|---|---|
| 인증서 | LM3489EVAL/NOPB EU Declaration of Conformity (DoC) | 2019. 1. 2 | |||
| 사용 설명서 | AN-1471 LM3489 Demonstration Board (Rev. A) | 2013. 4. 25 |