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LM5085-Q1

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汽车级 4.5V 至 75V 宽输入电压、恒定导通时间非同步 PFET 降压控制器

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open-in-new 比较替代产品
功能与比较器件相同但引脚有所不同
LM5141-Q1 正在供货 汽车类宽输入 2.2MHz 低 IQ 同步降压控制器 Optional spread spectrum for improved EMI.

产品详情

Vin (min) (V) 4.5 Vin (max) (V) 75 Vout (min) (V) 1.25 Vout (max) (V) 75 Iout (max) (A) 10 Iq (typ) (mA) 1.3 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 1000 Features Adjustable current limit, Enable, Frequency synchronization Operating temperature range (°C) -40 to 125 Regulated outputs (#) 1 Number of phases 1 Rating Automotive Control mode Constant on-time (COT) Type Controller
Vin (min) (V) 4.5 Vin (max) (V) 75 Vout (min) (V) 1.25 Vout (max) (V) 75 Iout (max) (A) 10 Iq (typ) (mA) 1.3 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 1000 Features Adjustable current limit, Enable, Frequency synchronization Operating temperature range (°C) -40 to 125 Regulated outputs (#) 1 Number of phases 1 Rating Automotive Control mode Constant on-time (COT) Type Controller
HVSSOP (DGN) 8 14.7 mm² 3 x 4.9
  • 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
  • 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.

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.

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类型 标题 下载最新的英语版本 日期
* 数据表 LM5085/-Q1 75-V Constant On-Time PFET Buck Switching Controller 数据表 (Rev. I) PDF | HTML 2015年 8月 12日
EVM 用户指南 AN-1878 LM5085 Evaluation Board (Rev. B) 2013年 4月 30日
应用手册 Constant Current Constant Voltage Buck Converter w/LM25085 (Rev. A) 2013年 4月 23日
应用手册 利用降压P-FET控制器设计非反向降压/升压 (Zeta) 转换器 英语版 2011年 4月 22日

设计和开发

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评估板

LM5085EVAL — LM5085 - 75V 恒准时 PFET 降压开关控制器评估模块

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 (...)

用户指南: PDF
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仿真模型

LM5085 PSpice Transient Model (Rev. A)

SNVM213A.ZIP (135 KB) - PSpice Model
仿真模型

LM5085 PSpice Unencrypted Transient Model (Rev. B)

SNVM213B.ZIP (147 KB) - PSpice Model
仿真模型

LM5085 TINA-TI Load Transient Reference Design (Rev. A)

SNVM496A.TSC (135 KB) - TINA-TI Reference Design
仿真模型

LM5085 TINA-TI Startup Reference Design (Rev. A)

SNVM497A.TSC (136 KB) - TINA-TI Reference Design
仿真模型

LM5085 TINA-TI Transient Spice Model (Rev. A)

SNVM498A.ZIP (20 KB) - TINA-TI Spice Model
仿真模型

LM5085 Unencrypted PSpice Transient Model

SNVM955.ZIP (3 KB) - PSpice Model
计算工具

LM25085-5085QUICK-CALC — LM(2)5085 快速入门计算器

模拟工具

PSPICE-FOR-TI — 适用于 TI 设计和模拟工具的 PSpice®

PSpice® for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence® 的模拟分析引擎。PSpice for TI 可免费使用,包括业内超大的模型库之一,涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

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封装 引脚 下载
HVSSOP (DGN) 8 查看选项

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包含信息:
  • 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
包含信息:
  • 制造厂地点
  • 封装厂地点

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