LM3489EVAL
ヒステリシス PFET 降圧コントローラ、イネーブル・ピン付
LM3489EVAL
概要
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.
特長
- 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
購入と開発の開始
評価ボード
LM3489EVAL/NOPB — Hysteretic PFET Buck Controller with Enable Pin
在庫あり
制限：
TI.com で在庫切れ
TI.com で取り扱いなし
LM3489EVAL/NOPB — Hysteretic PFET Buck Controller with Enable Pin
技術資料
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| タイプ | タイトル | 最新の英語版をダウンロード | 日付 | |||
|---|---|---|---|---|---|---|
| 証明書 | LM3489EVAL/NOPB EU Declaration of Conformity (DoC) | 2019/01/02 | ||||
| ユーザー・ガイド | AN-1471 LM3489 Demonstration Board (Rev. A) | 2013/04/25 |