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参数

Vin (Min) (V) 4.5 Vin (Max) (V) 75 Vout (Min) (V) 1.205 Vout (Max) (V) 70 Iout (Max) (A) 10 Iq (Typ) (mA) 3.8 Switching frequency (Min) (kHz) 50 Switching frequency (Max) (kHz) 1000 Features Adjustable Current Limit, Enable, Frequency Synchronization, Spread Spectrum Operating temperature range (C) -40 to 125 Regulated outputs (#) 1 Number of Phases 1 Rating Catalog open-in-new 查找其它 降压控制器(外部开关)

封装|引脚|尺寸

HTSSOP (PWP) 16 32 mm² 5 x 6.4 open-in-new 查找其它 降压控制器(外部开关)

特性

  • LM5088-Q1 is an Automotive Grade Product
    that is AEC-Q100 Grade 1 Qualified
    (–40°C to +125°C Operating Junction Temperature)
  • Emulated Current Mode Control
  • Drives External High-Side N-channel MOSFET
  • Ultra-Wide Input Voltage Range from 4.5V to 75V
  • 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
  • Package: HTSSOP (16 Pin)
open-in-new 查找其它 降压控制器(外部开关)

描述

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/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 HTSSOP-16 pin package.

open-in-new 查找其它 降压控制器(外部开关)
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技术文档

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类型 标题 下载最新的英文版本 发布
* 数据表 LM5088, LM5088-Q1 Wide Input Range Non-Synchronous Buck Controller 数据表 2014年 8月 8日
白皮书 Valuing wide VIN, low EMI synchronous buck circuits for cost-driven, demanding a 2019年 4月 10日
应用手册 Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics 2016年 7月 21日
技术文章 Power Tips: Automotive EMI Series: Dithering? Not always a bad thing 2016年 2月 10日
应用手册 Load Dump and Cranking Protection for Automotive Backlight LED Power Supply 2015年 3月 16日
应用手册 Automated Frequency Response Analyzer 2013年 10月 9日
用户指南 AN-1913 LM5088 Evaluation Board 2013年 4月 30日
应用手册 Improve Power Converter Reliability Using Hiccup-Mode Current Limiting 2009年 5月 11日
用户指南 Application Note 1913 LM5088 Evaluation Board (cn) 2008年 12月 9日

设计与开发

有关其他条款或所需资源,请点击下面的任何链接来查看详情页面。

硬件开发

评估板 下载
document-generic 用户指南
$49.00
说明

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 evaluation (...)

评估板 下载
document-generic 用户指南
$49.00
说明

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 evaluation (...)

设计工具和仿真

仿真模型 下载
SNVM021.ZIP (16 KB) - TINA-TI Spice Model
仿真模型 下载
SNVM022.TSC (136 KB) - TINA-TI Reference Design
仿真模型 下载
SNVM355.ZIP (46 KB) - PSpice Model
仿真模型 下载
SNVM356.ZIP (200 KB) - PSpice Model
仿真模型 下载
SNVM956.ZIP (2 KB) - PSpice Model
仿真模型 下载
SNVM957.ZIP (1 KB) - PSpice Model
计算工具 下载
LM(2)5088 快速入门计算器
LM25088-5088QUICK-CALC

CAD/CAE 符号

封装 引脚 下载
HTSSOP (PWP) 16 了解详情

订购与质量

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