LM3489EVAL
具有使能端引脚的滞后 PFET 降压控制器
LM3489EVAL
概述
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.
特性
- 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
立即订购并开发
评估板
LM3489EVAL/NOPB — Hysteretic PFET Buck Controller with Enable Pin
TI.com 上无现货
技术文档
= TI 精选文档
未找到结果。请清除搜索，并重试。
查看所有 2
| 类型 | 标题 | 下载最新的英文版本 | 日期 | |||
|---|---|---|---|---|---|---|
| * | 用户指南 | AN-1471 LM3489 Demonstration Board (Rev. A) | 2013年 4月 25日 | |||
| 证书 | LM3489EVAL/NOPB EU Declaration of Conformity (DoC) | 2019年 1月 2日 |