LM5118-Q1
- AEC-Q100 Qualified for Automotive Applications
- Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C6
- Ultra-Wide Input Voltage Range From 3 V to 75 V
- Emulated Peak Current Mode Control
- Smooth Transition Between Step-Down and Step-Up Modes
- Switching Frequency Programmable to 500 KHz
- Oscillator Synchronization Capability
- Internal High Voltage Bias Regulator
- Integrated High and Low-Side Gate Drivers
- Programmable Soft-Start Time
- Ultra-Low Shutdown Current
- Enable Input Wide Bandwidth Error Amplifier
- 1.5% Feedback Reference Accuracy
- Thermal Shutdown
- Package: 20-Pin HTSSOP (Exposed Pad)
- Create a Custom Design Using the LM5118-Q1 With the WEBENCH® Power Designer
The LM5118-Q1 wide voltage range Buck-Boost switching regulator controller features all of the functions necessary to implement a high-performance, cost-efficient Buck-Boost regulator using a minimum of external components. The Buck-Boost topology maintains output voltage regulation when the input voltage is either less than or greater than the output voltage, making it especially suitable for automotive applications. The LM5118-Q1 operates as a buck regulator while the input voltage is sufficiently greater than the regulated output voltage and gradually transitions to the buck-boost mode as the input voltage approaches the output. This dual-mode approach maintains regulation over a wide range of input voltages with optimal conversion efficiency in the buck mode and a glitch-free output during mode transitions. This easy-to-use controller includes drivers for the high-side buck MOSFET and the low-side boost MOSFET. The regulators control method is based upon current mode control using an emulated current ramp. Emulated current mode control reduces noise sensitivity of the pulse-width modulation circuit, allowing reliable control of the very small duty cycles necessary in high input voltage applications. Additional protection features include current limit, thermal shutdown and an enable input. The device is available in a power-enhanced, 20-pin HTSSOP package featuring an exposed die attach pad to aid thermal dissipation.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | LM5118-Q1 Wide Voltage Range Buck-Boost Controller datasheet | PDF | HTML | 2017年 9月 14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 | ||
EVM User's guide | AN-1819 LM5118 Evaluation Board (Rev. B) | 2014年 1月 17日 | ||
User guide | AN-2178 LM5118 Four Switch Conversion (Rev. E) | 2013年 5月 6日 |
設計與開發
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The LM5118 evaluation board is designed to provide the design engineer with a fully functional, Emulated Current Mode Control, buck-boost power converter to evaluate the LM5118 controller IC. The evaluation board provides a 12V output with 3A of output current capability. The evaluation board's (...)
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封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
HTSSOP (PWP) | 20 | 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