現在提供此產品的更新版本
功能相同，但引腳輸出與所比較的裝置不同
LMR14020-Q1
- Qualified for automotive applications
- AEC-Q100 qualified with the following results:
- Device temperature grade 1: –40 °C to 125 °C ambient operating temperature range
- Device HBM ESD classification level H1C
- Device CDM ESD classification level C4A
- 4V to 40V input range
- 2A continuous output current
- Ultra-low 40µA operating quiescent current
- 90mΩ high-side MOSFET
- 75ns minimum switch-on time
- Current mode control
- Adjustable switching frequency from 200kHz to 2.5MHz
- Frequency synchronization to external clock
- Spread spectrum option for reduced EMI
- Fixed 5V output option
- Internal compensation for ease of use
- High duty cycle operation supported
- Precision enable input
- 1µA shutdown current
- External soft start
- Thermal, overvoltage, and short protection
The LMR14020-Q1 is a 40V, 2A step-down regulator with an integrated high-side MOSFET. With a wide input range from 4V to 40V, the device is designed for various applications from industrial to automotive for power conditioning from unregulated sources. An extended family is available in 3.5A and 5A options in pin-to-pin compatible packages, including LMR14030-Q1 and LMR14050-Q1. The regulator quiescent current is 40µA in sleep mode, which is designed for battery powered systems. An ultra-low 1µA current in shutdown mode can further prolong battery life. A wide adjustable switching frequency range allows either efficiency or external component size to be optimized. Internal loop compensation means that the user is free from the tedious task of loop compensation design. This internal loop compensation also minimizes the external components of the device. A precision enable input allows simplification of regulator control and system power sequencing. The device also has built-in protection features such as cycle-by-cycle current limit, thermal sensing and shutdown due to excessive power dissipation, and output overvoltage protection.
The LMR14020-Q1 is available in an 8-pin, HSOIC or 10-pin, WSON package with exposed pad for low thermal resistance.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 日期 |
|---|---|---|---|---|
| * | Data sheet | LMR14020-Q1 SIMPLE SWITCHER® Power Converter, 40V, 2A, Automotive, Step-Down Converter With 40µA IQ datasheet (Rev. B) | PDF | HTML | 2024年 12月 20日 |
| Application note | Design Consideration on Boot Resistor in Buck Converter | PDF | HTML | 2023年 5月 15日 | |
| Application note | Reduce Conducted EMI in Automotive Buck Converter Applications | 2019年 7月 31日 | ||
| Application note | How to Evaluate Junction Temperature Properly with Thermal Metrics (Rev. B) | 2019年 3月 29日 | ||
| Application note | How SYNC Logic Affects EMI Performance for Dual-Channel Buck Converters | 2018年 4月 27日 | ||
| Application note | Low Conducted EMI Power Solution for Automotive Digital Cockpit With LMR14050 an | 2018年 2月 7日 | ||
| Application note | Design Feedforward Capacitor for LMR14020 | 2017年 12月 20日 | ||
| Application note | How to Evaluate the Maximum Inductor in Internal Compensation PCM Buck Converter | 2017年 9月 20日 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
LMR14020QDPREVM — LMR14020QDPR 寬輸入電壓降壓轉換器評估模組
LMR14020SEVM — LMR14020S 降壓轉換器評估模組
LMR14020SEVM 是完全組裝過且經測試的電路，可用於評估 LMR14020S 的降壓轉換器。LMR14020SEVM 的運作輸入電壓範圍為 7V 至 30V（額定電壓為 12V），並可提供 5.0V 或 3.3V (2A) 的輸出。該電路板也配備跳線連接器，以啟用或停用轉換器運作、變更輸出電壓以及與外部時脈同步。電路板還具備用於回饋迴路量測的 AC 訊號注入端子。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HSOIC (DDA) | 8 | Ultra Librarian |
| WSON (DPR) | 10 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中的可靠性監測
- 晶圓廠位置
- 組裝地點
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。