LM5085
- LM5085-Q1 is an Automotive Grade Product that
is AEC-Q100 Grade 1 Qualified (–40°C to 125°C
Operating Junction Temperature) - Wide 4.5-V to 75-V Input Voltage Range
- Adjustable Current Limit Using RDS(ON) or a
Current Sense Resistor - Programmable Switching Frequency to 1MHz
- No Loop Compensation Required
- Ultra-Fast Transient Response
- Nearly Constant Operating Frequency with Line
and Load Variations - Adjustable Output Voltage from 1.25 V
- Precision ±2% Feedback Reference
- Capable of 100% Duty Cycle Operation
- Internal Soft-start Timer
- Integrated High Voltage Bias Regulator
- Thermal Shutdown
- Package:
- HVSSOP-8
- VSSOP-8
- WSON-8
The LM5085 is a high efficiency PFET switching regulator controller that can be used to quickly and easily develop a small, efficient buck regulator for a wide range of applications. This high voltage controller contains a PFET gate driver and a high voltage bias regulator which operates over a wide 4.5-V to 75-V input range. The constant on-time regulation principle requires no loop compensation, simplifies circuit implementation, and results in ultrafast load transient response. The operating frequency remains nearly constant with line and load variations due to the inverse relationship between the input voltage and the on-time. The PFET architecture allows 100% duty cycle operation for a low dropout voltage. Either the RDS(ON) of the PFET or an external sense resistor can be used to sense current for over-current detection.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LM5085/-Q1 75-V Constant On-Time PFET Buck Switching Controller datasheet (Rev. I) | PDF | HTML | 2015年 8月 12日 |
| Technical article | Crafty idea: Create a 150V non synchronous buck solution with a lower Vin rated co | PDF | HTML | 2017年 8月 25日 | |
| Analog Design Journal | Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics | 2016年 7月 21日 | ||
| Technical article | How to design for EMC and isolation with Fly-Buck™ converters | PDF | HTML | 2015年 7月 28日 | |
| Application note | Transient Response versus Ripple – An Analysis of Ripple Injection Techniques | 2014年 4月 28日 | ||
| White paper | Wide VIN power management ICs simplify white paper (Rev. A) | 2013年 9月 19日 | ||
| EVM User's guide | AN-1878 LM5085 Evaluation Board (Rev. B) | 2013年 4月 30日 | ||
| Application note | Constant Current Constant Voltage Buck Converter w/LM25085 (Rev. A) | 2013年 4月 23日 | ||
| Application note | Designing Non-Invert Buck-Boost (Zeta) Cnvrts w/a Buck P-FET Cntrl | 2011年 4月 22日 |
設計與開發
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LM5085EVAL — LM5085 - 75V 廣泛 Vin 固定導通時間 PFET 降壓式切換控制器評估模組
The LM5085 evaluation board provides the design engineer with a fully functional buck regulator, employing the LM5085 PFET switching controller which uses the constant on-time (COT) operating principle. The evaluation board provides a 5V output over an input range of 5.5V to 55V. The circuit (...)
LM5085 TINA-TI Load Transient Reference Design (Rev. A)
LM5085 TINA-TI Startup Reference Design (Rev. A)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HVSSOP (DGN) | 8 | Ultra Librarian |
| VSSOP (DGK) | 8 | Ultra Librarian |
| WSON (NGQ) | 8 | 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
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點