LM25116
- New, similar products available:
- Emulated peak current mode
- Wide operating range (up to 42 V)
- Low I Q shutdown (< 10 µA)
- Drives standard or logic level MOSFETs
- Robust 3.5-A peak gate drive
- Free-run or synchronous operation to 1 MHz
- Optional diode emulation mode
- Programmable output from 1.215 V to 36 V
- Precision 1.5% voltage reference
- Programmable current limit
- Programmable soft start
- Programmable line undervoltage lockout
- Automatic switch to external bias supply
- 20-pin HTSSOP exposed pad
- Thermal shutdown
The LM25116 is a synchronous buck controller intended for step-down regulator applications from a high voltage or widely varying input supply. The control method is based upon current mode control using an emulated current ramp. Current mode control provides inherent line feedforward, cycle-by-cycle current limiting and ease of loop compensation. The use of an emulated control ramp reduces noise sensitivity of the pulse-width modulation circuit, allowing reliable control of very small duty cycles necessary in high input voltage applications. The operating frequency is programmable from 50 kHz to 1 MHz. The LM25116 drives external high-side and low-side NMOS power switches with adaptive dead-time control. A user-selectable diode emulation mode enables discontinuous mode operation for improved efficiency at light load conditions. A low quiescent current shutdown disables the controller and consumes less than 10 µA of total input current. Additional features include a high voltage bias regulator, automatic switch-over to external bias for improved efficiency, thermal shutdown, frequency synchronization, cycle-by-cycle current limit and adjustable line undervoltage lockout. The device is available in a power enhanced 20-pin HTSSOP package featuring an exposed die attach pad to aid thermal dissipation.
New products (LM25141, LM5141, LM25148, and LM25149) offer reduced BOM cost, higher efficiency, and reduced design size among many other features.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LM25116 Wide-Range Synchronous Buck Controller datasheet (Rev. F) | PDF | HTML | 2023年 11月 3日 |
| White paper | Valuing wide VIN, low EMI synchronous buck circuits for cost-driven, demanding a (Rev. A) | 2019年 4月 10日 | ||
| White paper | Overcoming Challenges in Designing Step-Dwn Reg Apps w/40V Input Voltage (Rev. A) | 2018年 7月 3日 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018年 6月 25日 | ||
| Analog Design Journal | Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics | 2016年 7月 21日 | ||
| Application note | Automated Frequency Response Analyzer | 2013年 10月 9日 | ||
| EVM User's guide | AN-1596 LM5116 Evaluation Board (Rev. C) | 2013年 4月 24日 | ||
| EVM User's guide | AN-1617 LM25116 Evaluation Board (Rev. A) | 2013年 4月 24日 | ||
| EVM User's guide | AN-1713 LM5116-12 Evaluation Board (Rev. A) | 2013年 4月 24日 | ||
| Application note | Minimizing FET Losses For a High Input Rail Buck Converter (Rev. A) | 2013年 4月 23日 |
設計與開發
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LM25116EVAL — 適用於 LM25116 寬輸入電壓同步降壓控制器的評估板
The LM25116 evaluation board is designed to provide the design engineer with a fully functional power converter based on Emulated Current Mode Control to evaluate the LM25116 controller IC. The evaluation board provides a 5V output with a 7A current capability. The wide input voltage ranges from 7V (...)
LM5116-5116WG-25116DESIGN-CALC — LM(2)5116/WG 快速入門元件計算機
| 封裝 | 引腳 | 下載 |
|---|---|---|
| HTSSOP (PWP) | 20 | 檢視選項 |
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
- 資格摘要
- 進行中可靠性監測
- 晶圓廠位置
- 組裝地點