LM25005
- Integrated 42V, 160mΩ N-channel MOSFET
- Ultra-wide input voltage range: from 7V to 42V
- Internal bias regulator
- Adjustable output voltage: from 1.225V
- Feedback reference accuracy: 1.5%
- Current mode control with emulated inductor current ramp
- Single resistor oscillator frequency setting
- Oscillator synchronization input
- Programmable soft-start
- Shutdown and standby input
- Wide bandwidth error amplifier
- Thermal shutdown
The LM25005 switching regulator features all of the functions necessary to implement an efficient, high voltage buck regulator using a minimum of external components. This easy to use regulator includes a 42V, 160mΩ, N-channel MOSFET, with an output current capability of 2.5A.
The regulator control method is based upon current mode control using an emulated current ramp. Current mode control provides inherent line voltage feed-forward, 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 50kHz to 500kHz. An oscillator synchronization pin allows multiple LM25005 regulators to self-synchronize or synchronize to an external clock.
Additional protection features include current limit, thermal shutdown, and remote shutdown capability. The device is available in a power-enhanced HTSSOP package featuring an exposed die attach pad to aid thermal dissipation.
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 | LM25005 42V, 2.5A Step-Down Switching Regulator datasheet (Rev. D) | PDF | HTML | 2025/12/2 | ||
| 白皮書 | Overcoming Challenges in Designing Step-Dwn Reg Apps w/40V Input Voltage (Rev. A) | 2018/7/3 | ||||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 白皮書 | Buck regulator topologies for wide input/output voltage differentials (Rev. A) | PDF | HTML | 2016/9/15 |
設計與開發
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 20 | Ultra Librarian |