LM2773
- Low-Noise Spread Spectrum Operation
- 1.8V/1.6V Selectable Output Voltage
- 2% Output Voltage Regulation
- > 75% Efficiency in 1.8V Mode
- Very Low Output Ripple: 10mV @ 300mA
- Output Currents up to 300mA
- 2.5V to 5.5V Input Voltage Range
- Shutdown Disconnects Load from VIN
- 1.15MHz Switching Frequency
- No Inductors…Small Solution Size
- Short Circuit and Thermal Protection
- 0.5mm pitch, DSBGA-9 (1.511 × 1.511mm × 0.6mm)
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The LM2773 is a switched capacitor step-down regulator that produces a selectable 1.8V or 1.6V output. It is capable of supplying loads up to 300mA. The LM2773 operates with an input voltage from 2.5V to 5.5V, accommodating 1-cell Li-Ion batteries and chargers.
The LM2773 utilizes a regulated charge pump with gains of 2/3x and 1x. It has very low ripple and noise on both the input and output due to its pre-regulated 1.15MHz (typ.) switching frequency and spread spectrum operation. When output currents are low, the LM2773 automatically switches to a low-ripple PFM regulation mode to maintain high efficiency over the entire load range.
The LM2773 is available in TI's 0.5mm pitch 9-bump DSBGA.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | Low-Ripple 1.8V/1.6V Spread-Spectrum Switched Capacitor Step-Down Regulator datasheet (Rev. A) | 2013/5/1 | |||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| EVM User's guide | AN-1769 LM2773 Evaluation Board (Rev. A) | 2013/4/30 |
設計與開發
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| DSBGA (YZR) | 9 | Ultra Librarian |
訂購與品質
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