現在提供此產品的更新版本
功能相同，但針腳輸出與所比較的裝置不同。
LM3671-Q1
- LM3671-Q1 is Qualified for Automotive Applications
- AEC Q100-Qualified With the Following Results
- Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
- 16-µA Typical Quiescent Current
- 600-mA Maximum Load Capability
- 2-MHz PWM Fixed Switching Frequency (Typical)
- Automatic PFM-PWM Mode Switching
- Internal Synchronous Rectification for High Efficiency
- Internal Soft Start
- 0.01-µA Typical Shutdown Current
- Operates from a Single Li-Ion Cell Battery
- Only Three Tiny Surface-Mount External Components Required (One Inductor, Two Ceramic Capacitors)
- Current Overload and Thermal Shutdown Protection
- Available in Fixed Output Voltages and Adjustable Version
The LM3671 step-down DC-DC converter is optimized for powering low voltage circuits from a single Li-Ion cell battery and input voltage rails from 2.7 V to 5.5 V. It provides up to 600-mA load current, over the entire input voltage range. There are several different fixed voltage output options available as well as an adjustable output voltage version range from 1.1 V to 3.3 V.
The device offers superior features and performance for mobile phones and similar portable systems. Automatic intelligent switching between PWM low-noise and PFM low-current mode offers improved system control. During PWM mode, the device operates at a fixed-frequency of 2 MHz (typical). Hysteretic PFM mode extends the battery life by reducing the quiescent current to 16 µA (typical) during light load and standby operation. Internal synchronous rectification provides high efficiency during PWM mode operation. In shutdown mode, the device turns off and reduces battery consumption to 0.01 µA (typical).
A high-switching frequency of 2 MHz (typical) allows use of tiny surface-mount components. Only three external surface-mount components, an inductor, and two ceramic capacitors, are required.
For all available packages, see the orderable addendum at the end of the datasheet.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 | LM3671/-Q1 2-MHz, 600-mA Step-Down DC-DC Converter datasheet (Rev. S) | PDF | HTML | 2016/5/12 | ||
| 應用說明 | Power Management Design for Applications Processors | 2007/3/22 |
設計與開發
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LM3671TL-1.8EV — 採用 SOT23-5 和 5-Bump 微型 SMD 封裝的 2 MHz、600mA 降壓 DC-DC 轉換器
The LM3671 evaluation board is a working demonstration of a step down DC-DC converter. The application note contains information about the evaluation board. The LM3671 step-down DC-DC converter is optimized for powering ultra-low voltage circuits from a single Li-Ion cell or 3 cell NiMH/NiCd (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| DSBGA (YZR) | 5 | Ultra Librarian |
| SOT-23 (DBV) | 5 | Ultra Librarian |