LM2750
- Inductorless solution: Application requires only 3 small ceramic capacitors
- Fixed 5.0V output and adjustable output voltage options available
- 85% Peak Efficiency 70% Average Efficiency over Li-Ion Input Range (2.9V-to-4.2V)
- Output Current up to 120mA with 2.9V <= VIN <= 5.6V Output Current up to 40mA with 2.7V <= VIN <= 2.9V
- Wide Input Voltage Range: 2.7V to 5.6V
- Fixed 1.7MHz switching frequency for a low-noise, low-ripple output signal
- Pre-regulation minimizes input current ripple, keeping the battery line (VIN) virtually noise-free
- Tiny LLP package with outstanding power dissipation: Usually no derating required.
- Shutdown Supply Current less than 2µA
The LM2750 is a regulated switched-capacitor doubler that produces a low-noise output voltage. The 5.0V output voltage option (LM2750-5.0) can supply up to 120mA of output current over a 2.9V to 5.6V input range, as well as up to 40mA of output current when the input voltage is as low as 2.7V. An adjustable output voltage option with similar output current capabilities is also available (LM2750-ADJ). The LM2750 has been placed in National's 10-pin LLP, a package with excellent thermal properties that keeps the part from overheating under almost all rated operating conditions
A perfect fit for space-constrained, battery-powered applications, the LM2750 requires only 3 external components: one input capacitor, one output capacitor, and one flying capacitor. Small, inexpensive ceramic capacitors are recommended for use. These capacitors, in conjunction with the 1.7MHz fixed switching frequency of the LM2750, yield low output voltage ripple, beneficial for systems requiring a low-noise supply. Pre-regulation minimizes input current ripple, reducing input noise to negligible levels.
A tightly controlled soft-start feature limits inrush currents during part activation. Shutdown completely disconnects the load from the input. Output current limiting and thermal shutdown circuitry protect both the LM2750 and connected devices in the event of output shorts or excessive current loads.
技術資料
種類 | タイトル | 最新の英語版をダウンロード | 日付 | |||
---|---|---|---|---|---|---|
* | データシート | LM2750 Low Noise Switched Capacitor Boost Regulator (jp) データシート (Rev. K 翻訳版) | 最新英語版 (Rev.N) | PDF | HTML | 2005年 12月 21日 | |
EVM ユーザー ガイド (英語) | AN-1269 LM2750-5.0 Evaluation Board (Rev. A) | 2013年 4月 30日 | ||||
EVM ユーザー ガイド (英語) | AN-1302 LM2750-ADJ Evaluation Board (Rev. B) | 2013年 4月 30日 |
設計と開発
その他のアイテムや必要なリソースを参照するには、以下のタイトルをクリックして詳細ページをご覧ください。
パッケージ | ピン数 | ダウンロード |
---|---|---|
WSON (DSC) | 10 | オプションの表示 |
WSON (NGY) | 10 | オプションの表示 |
購入と品質
- RoHS
- REACH
- デバイスのマーキング
- リード端子の仕上げ / ボールの原材料
- MSL 定格 / ピーク リフロー
- MTBF/FIT 推定値
- 材質成分
- 認定試験結果
- 継続的な信頼性モニタ試験結果
- ファブの拠点
- 組み立てを実施した拠点