LM20145EVAL
5A、PowerWise 可変周波数、同期整流・降圧レギュレータ
LM20145EVAL
概要
The LM20145 is a full featured buck switching regulator capable of driving up to 5A of load current. The switching frequency of the LM20145 can be varied from 250kHz to 750kHz with an external resistor allowing the size of the power stage components to be reduced while still providing efficient operation. The LM20145 is capable of converting an input voltage between 2.95V and 5.5V down to an output voltage as low as 0.8V. Fault protection features include cycle-by-cycle current limit, output power good, and output over-voltage protection. The dual function soft-start/tracking pin can be used to control the startup response of the LM20145, and the precision enable pin can be used to easily sequence the LM20145 in applications with sequencing requirements. The LM20145 is available in an eTSSOP-16 package with an exposed pad for enhanced thermal performance.
特長
- Input voltage range 2.95V to 5.5V
- Accurate current limit minimizes inductor size
- 97% peak efficiency
- Adjustable switching frequency (250 kHz to 750 kHz)
- 32 mΩ integrated FET switches
- Starts into prebiased loads
- Output voltage tracking
- Peak current mode control
- Adjustable output voltage down to 0.8V
- Adjustable Soft-Start with external capacitor
- Precision enable pin with hysteresis
- Integrated OVP, UVLO, power good and thermal shutdown
- eTSSOP-16 exposed pad package
Applications:
- Simple to design, high efficiency point of load regulation from a 5V or 3.3V bus
- High Performance DSPs, FPGAs, ASICs and microprocessors
- Broadband, Networking and Optical Communications Infrastructure
AC/DC および DC/DC コンバータ (FET 内蔵)
購入と開発の開始
LM20145EVAL — 5A、PowerWise® 可変周波数の同期整流・降圧レギュレータの評価モジュール
LM20145EVAL — 5A、PowerWise® 可変周波数の同期整流・降圧レギュレータの評価モジュール
技術資料
| タイプ | タイトル | 最新の英語版をダウンロード | 日付 | |||
|---|---|---|---|---|---|---|
| * | EVM ユーザー ガイド (英語) | AN-1693 LM20145 Evaluation Board (Rev. B) | 2013/05/05 | |||
| 証明書 | LM20145EVAL EU Declaration of Conformity (DoC) | 2019/01/02 | ||||
| アプリケーション・ノート | Application Note 1693 LM20145 Evaluation Board (jp) | 2007/10/30 |