LM5116WG
- Hermetic Package for Harsh Operating Environments
- Emulated Peak Current Mode
- Wide Operating Range up to 100V
- Low IQ Shutdown (< 10 µA)
- Drives Standard or Logic Level MOSFETs
- Robust 3.5A Peak Gate Drive
- Free-Run or Synchronous Operation to 1 MHz
- Optional Diode Emulation Mode
- Programmable Output from 1.215V to 80V
- Precision 1.5% Voltage Reference
- Programmable Current Limit
- Programmable Soft-Start
- Programmable Line Under-Voltage Lockout
- Automatic Switch to External Bias Supply
- CPGA-20 with No Thermal Shutdown
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The LM5116WG 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 utilizing an emulated current ramp. Current mode control provides inherent line 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 50 kHz to 1 MHz. The LM5116WG 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, frequency synchronization, cycle by cycle current limit and adjustable line under-voltage lockout. The device is available in a CPGA-20 high temperature ceramic package with the thermal shutdown feature disabled.
技术文档
类型 | 标题 | 下载最新的英语版本 | 日期 | |||
---|---|---|---|---|---|---|
* | 数据表 | LM5116WG Wide Range Synchronous Buck Controller 数据表 (Rev. D) | 2013年 3月 17日 | |||
EVM 用户指南 | AN-1596 LM5116 Evaluation Board (Rev. C) | 2013年 4月 24日 | ||||
EVM 用户指南 | AN-1713 LM5116-12 Evaluation Board (Rev. A) | 2013年 4月 24日 | ||||
应用手册 | Minimizing FET Losses For a High Input Rail Buck Converter (Rev. A) | 2013年 4月 23日 | ||||
应用手册 | Minimizing FET Losses For a High Input Rail Buck Converter (cn) | 最新英语版本 (Rev.A) | 2007年 9月 5日 |
设计和开发
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LM5116-5116WG-25116DESIGN-CALC — LM(2)5116/WG 快速入门组件计算器
封装 | 引脚 | CAD 符号、封装和 3D 模型 |
---|---|---|
CFP (NAR) | 20 | Ultra Librarian |
订购和质量
- RoHS
- REACH
- 器件标识
- 引脚镀层/焊球材料
- MSL 等级/回流焊峰值温度
- MTBF/时基故障估算
- 材料成分
- 鉴定摘要
- 持续可靠性监测
- 制造厂地点
- 封装厂地点