LM5088
- 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 2
- Device CDM ESD classification level C5
- Emulated current mode control
- Drives external high-side N-channel MOSFET
- Ultra-wide input voltage range from 4.5 V to 75 V
- Low IQ shutdown and standby modes
- High duty cycle ratio feature for reduced dropout voltage
- Spread spectrum EMI reduction (LM5088-1)
- Hiccup timer for overload protection (LM5088-2)
- Adjustable output voltage from 1.205 V with 1.5% feedback reference accuracy
- Wide bandwidth error amplifier
- Single resistor oscillator frequency setting
- Oscillator synchronization capability
- Programmable soft start
- High voltage, low dropout bias regulator
- Thermal shutdown protection
- 16-pin HTSSOP package
The LM5088 high voltage non-synchronous buck controller features all the necessary functions to implement an efficient, high-voltage buck converter using a minimum number of external components. The LM5088 can be configured to operate over an ultra-wide input voltage range of 4.5 V to 75 V. This easy-to-use controller includes a level-shifted gate driver capable of controlling an external N-channel buck switch. The control method is based upon peak current mode control utilizing an emulated current ramp. 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 and low output voltage applications. The LM5088 switching frequency is programmable from 50 kHz to 1 MHz.
The LM5088 is available in two versions: The LM5088-1 provides a ±5% frequency dithering function to reduce the conducted and radiated EMI, while the LM5088-2 provides a versatile restart timer for overload protection. Additional features include a low dropout bias regulator, tri-level enable input to control shutdown and standby modes, soft start, and oscillator synchronization capability. The device is available in a thermally enhanced 16-pin HTSSOP package.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LM5088, LM5088-Q1 Wide Input Range Non-Synchronous Buck Controller datasheet (Rev. J) | PDF | HTML | 2022年 6月 8日 |
| White paper | Valuing wide VIN, low EMI synchronous buck circuits for cost-driven, demanding a (Rev. A) | 2019年 4月 10日 | ||
| Analog Design Journal | Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics | 2016年 7月 21日 | ||
| Technical article | Power Tips: Automotive EMI Series: Dithering? Not always a bad thing | PDF | HTML | 2016年 2月 10日 | |
| Application note | Load Dump and Cranking Protection for Automotive Backlight LED Power Supply (Rev. A) | 2015年 3月 16日 | ||
| Application note | Automated Frequency Response Analyzer | 2013年 10月 9日 | ||
| EVM User's guide | AN-1913 LM5088 Evaluation Board (Rev. E) | 2013年 4月 30日 | ||
| Application note | Improve Power Converter Reliability Using Hiccup-Mode Current Limiting | 2009年 5月 11日 |
設計與開發
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LM5088MH-1EVAL — LM5088-1 - 具有抖動的寬輸入範圍非同步降壓控制器評估模組
The LM5088-1 evaluation board is designed to provide the design engineer with a fully functional power converter based on Emulated Current Mode Control to evaluate the LM5088 controller IC. The LM5088 evaluation board is available in two versions (like the LM5088 controller): the LM5088-1 (...)
LM5088MH-2EVAL — LM5088-2 - 具有打嗝模式重新啟動的寬輸入範圍非同步降壓控制器
The LM5088-2 evaluation board is designed to provide the design engineer with a fully functional power converter based on Emulated Current Mode Control to evaluate the LM5088 controller IC. The LM5088 evaluation board is available in two versions (like the LM5088 controller): the LM5088-1 (...)
| 封裝 | 引腳 | 下載 |
|---|---|---|
| HTSSOP (PWP) | 16 | 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