LM25011
- LM25011-Q1 is an Automotive Grade Product that is AEC-Q100 Grade 1 Qualified (–40°C to +125°C Operating Junction Temperature)
- LM25011A Allows Low-Dropout Operation at High Switching Frequency
- Input Operating Voltage Range: 6 V to 42 V
- Absolute Maximum Input Rating: 45 V
- Integrated 2-A N-Channel Buck Switch
- Adjustable Current Limit Allows for Smaller Inductor
- Adjustable Output Voltage from 2.51 V
- Minimum Ripple Voltage at VOUT
- Power Good Output
- Switching Frequency Adjustable to 2 MHz
- COT Topology Features:
- Switching Frequency Remains Nearly Constant with Load Current and Input Voltage Variations
- Ultra-Fast Transient Response
- No Loop Compensation Required
- Stable Operation with Ceramic Output Capacitors
- Allows for Smaller Output Capacitor and Current Sense Resistor
- Adjustable Soft-Start Timing
- Thermal Shutdown
- Precision 2% Feedback Reference
- Package: 10-Pin, HVSSOP
- Create a Custom Design Using the LM25011 Family with the WEBENCH Power Designer
The LM25011 constant on-time step-down switching regulator features all the functions needed to implement a low-cost, efficient, buck bias regulator capable of supplying up to 2 A of load current. This high-voltage regulator contains an N-Channel Buck switch, a startup regulator, current limit detection, and internal ripple control. The constant on-time regulation principle requires no loop compensation, results in fast load transient response, and simplifies circuit implementation. The operating frequency remains constant with line and load. The adjustable valley current limit detection results in a smooth transition from constant voltage to constant current mode when current limit is reached, without the use of current limit foldback. The PGD output indicates the output voltage has increased to within 5% of the expected regulation value. Additional features include: Low output ripple, VIN under-voltage lock-out, adjustable soft-start timing, thermal shutdown, gate drive pre-charge, gate drive under-voltage lock-out, and maximum duty cycle limit.
The LM25011A has a shorter minimum off-time than the LM25011, which allows for higher frequency operation at low input voltages.
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 | LM25011, LM25011-Q1, LM25011A, LM25011A-Q1 42-V 2-A Constant On-Time Switching Regulator With Adjustable Current Limit datasheet (Rev. H) | PDF | HTML | 2014/9/3 | ||
| 白皮書 | Valuing wide VIN, low EMI synchronous buck circuits for cost-driven, demanding a (Rev. A) | 2019/4/10 | ||||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 白皮書 | Wide VIN power management ICs simplify white paper (Rev. A) | 2013/9/19 |
設計與開發
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LM25011MY-EVAL — LM25011 寬輸入電壓切換穩壓器評估模組
The LM25011EVAL evaluation board provides the design engineer with a fully functional buck regulator, employing the constant on-time (COT) operating principle. This evaluation board provides a 5V output over an input range of 8V to 42V. The circuit features an adjustable load current in excess of (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HVSSOP (DGQ) | 10 | Ultra Librarian |
訂購與品質
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。