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降压控制器（外部开关）

LM25116

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6V 至 42V 宽输入电压、电流模式同步降压控制器

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数据表

LM25116

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数据表 立即订购

产品详细信息

Vin (Min) (V) 6 Vin (Max) (V) 42 Vout (Min) (V) 1.215 Vout (Max) (V) 36 Iout (Max) (A) 20 Iq (Typ) (uA) 4600 Switching frequency (Min) (kHz) 50 Switching frequency (Max) (kHz) 1000 Features Adjustable Current Limit, Enable, Frequency Synchronization, Light Load Efficiency, Synchronous Rectification Operating temperature range (C) -40 to 125 Regulated outputs (#) 1 Number of phases 1 Rating Catalog
Vin (Min) (V) 6 Vin (Max) (V) 42 Vout (Min) (V) 1.215 Vout (Max) (V) 36 Iout (Max) (A) 20 Iq (Typ) (uA) 4600 Switching frequency (Min) (kHz) 50 Switching frequency (Max) (kHz) 1000 Features Adjustable Current Limit, Enable, Frequency Synchronization, Light Load Efficiency, Synchronous Rectification Operating temperature range (C) -40 to 125 Regulated outputs (#) 1 Number of phases 1 Rating Catalog
HTSSOP (PWP) 20 42 mm² 6.5 x 6.4
  • Emulated Peak Current Mode
  • Wide Operating Range (Up to 42 V)
  • Low IQ Shutdown (< 10 µA)
  • Drives Standard or Logic Level MOSFETs
  • Robust 3.5-A Peak Gate Drive
  • Free-Run or Synchronous Operation to 1 MHz
  • Optional Diode Emulation Mode
  • Programmable Output From 1.215 V to 36 V
  • Precision 1.5% Voltage Reference
  • Programmable Current Limit
  • Programmable Soft Start
  • Programmable Line Undervoltage Lockout
  • Automatic Switch to External Bias Supply
  • 20-Pin HTSSOP Exposed Pad
  • Thermal Shutdown
  • Emulated Peak Current Mode
  • Wide Operating Range (Up to 42 V)
  • Low IQ Shutdown (< 10 µA)
  • Drives Standard or Logic Level MOSFETs
  • Robust 3.5-A Peak Gate Drive
  • Free-Run or Synchronous Operation to 1 MHz
  • Optional Diode Emulation Mode
  • Programmable Output From 1.215 V to 36 V
  • Precision 1.5% Voltage Reference
  • Programmable Current Limit
  • Programmable Soft Start
  • Programmable Line Undervoltage Lockout
  • Automatic Switch to External Bias Supply
  • 20-Pin HTSSOP Exposed Pad
  • Thermal Shutdown

The LM25116 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 using an emulated current ramp. Current mode control provides inherent line feedforward, 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 LM25116 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, thermal shutdown, frequency synchronization, cycle-by-cycle current limit and adjustable line undervoltage lockout. The device is available in a power enhanced 20-pin HTSSOP package featuring an exposed die attach pad to aid thermal dissipation.

The LM25116 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 using an emulated current ramp. Current mode control provides inherent line feedforward, 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 LM25116 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, thermal shutdown, frequency synchronization, cycle-by-cycle current limit and adjustable line undervoltage lockout. The device is available in a power enhanced 20-pin HTSSOP package featuring an exposed die attach pad to aid thermal dissipation.
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LM25145 正在供货 具有宽占空比范围的 6V 至 42V 同步降压直流/直流控制器 A next-generation solution that provides comparable functionality, smaller solution size and higher efficiency over a 6-V to 42-V operating voltage range.

技术文档

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类型 项目标题 下载最新的英语版本 日期
* 数据表 LM25116 Wide-Range Synchronous Buck Controller 数据表 (Rev. E) PDF | HTML 23 Sep 2016
白皮书 Valuing wide VIN, low EMI synchronous buck circuits for cost-driven, demanding a (Rev. A) 10 Apr 2019
选择指南 电源管理指南 2018 (Rev. K) 31 Jul 2018
白皮书 Overcoming Challenges in Designing Step-Dwn Reg Apps w/40V Input Voltage (Rev. A) 03 Jul 2018
选择指南 电源管理指南 2018 (Rev. R) 25 Jun 2018
模拟设计期刊 Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics 21 Jul 2016
技术文章 High cell battery packs fuel new applications and extend time between charges 03 Sep 2015
应用手册 Automated Frequency Response Analyzer 09 Oct 2013
EVM 用户指南 AN-1596 LM5116 Evaluation Board (Rev. C) 24 Apr 2013
EVM 用户指南 AN-1617 LM25116 Evaluation Board (Rev. A) 24 Apr 2013
EVM 用户指南 AN-1713 LM5116-12 Evaluation Board (Rev. A) 24 Apr 2013
应用手册 Minimizing FET Losses For a High Input Rail Buck Converter (Rev. A) 23 Apr 2013
应用手册 Minimizing FET Losses For a High Input Rail Buck Converter (cn) 下载最新的英文版本 (Rev.A) 05 Sep 2007

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LM25116EVAL — 用于 LM25116 宽范围同步降压控制器的评估板

The LM25116 evaluation board is designed to provide the design engineer with a fully functional power converter based on Emulated Current Mode Control to evaluate the LM25116 controller IC. The evaluation board provides a 5V output with a 7A current capability. The wide input voltage ranges from 7V (...)

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LM25116 PSpice Transient Model LM25116 PSpice Transient Model

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LM25116 PSpice Average Model LM25116 PSpice Average Model

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LM25116 Unencrypted PSpice Transient Model LM25116 Unencrypted PSpice Transient Model

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LM25116 Unencrypted PSpice Average Model LM25116 Unencrypted PSpice Average Model

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LM5116-5116WG-25116DESIGN-CALC LM(2)5116/WG 快速入门组件计算器

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HTSSOP (PWP) 20 了解详情

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  • 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
  • 认证摘要
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