MAX20471

低压同步Boost转换器

业界唯一汽车应用同步Boost转换器,输出电流高达1A,具有真关断和低电平有效RESET输出


点击查看特定型号的库存状况。

说明

MAX20471和MAX20472为高效、低压DC-DC转换器,将3.0V至4.0V输入电源升压至3.8V至5.25V (工厂可配置) @ 500mA、1A或2A。升压转换器在整个负载、电源和温度范围内的输出误差达到±1.5%。

IC可以工作在2.2MHz固定频率强制脉宽调制(FPWM)模式,提供更好的抗噪性和负载瞬态响应;也可工作在脉冲频率调制(跳脉冲)模式,确保轻载下的高效工作。2.2MHz工作频率允许使用全陶瓷电容,使外部元件最小化。可编程扩频调制可最大程度抑制电磁辐射。相对于分立式方案,集成的低RDS(ON)开关可大大提高重负载时的效率,并简化电路布局。

器件的其他特性包括输出真关断、软启动缓变、过流限制和过热保护。

MAX20471, MAX20472: Functional Diagram MAX20471, MAX20472:Functional Diagram 放大+

关键特性

  • 同步Boost转换器
    • 3.8V至5.25V输出,50mV步长
    • 500mA、1A和2A输出版本
  • 3.0V至4.0V工作电压
  • 输出真关断
  • 2.2MHz开关频率
  • 漏极开路复位输出引脚(低电平有效RESET)
  • 扩频使能引脚(EN)
  • 高精度
    • ±1.5%输出电压精度
    • 93 ±2%欠压监测
    • 107 ±2%过压监测
    • 良好的负载瞬态响应
  • 支持汽车环境的可靠性
    • 电流以模式控制、强制PWM和跳脉冲操作
    • 过热和过流保护
    • 12引脚(3mm × 3mm) TDFN封装
    • 8引脚(0.150”) SOIC封装(仅限MAX20471)
    • -40°C至+125°C汽车级温度范围

应用

  • 汽车CAN收发器
  • 汽车负载点

请查看具体的参数规格 Step-Up Switching Regulators (102)


Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
IOUT1
(A)
(min)(max)(min)(max)
MAX20471 344.50.5
MAX20472 1

Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。

MAX20472EVKIT: MAX20472 评估板
MAX20471EVKIT: MAX20471 评估板

工具和模型

  • EE-Sim: MAX20471 设计和仿真
  • MAX20471 SIMPLIS Schematic
  • 申请可靠性报告: MAX20471 
    型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

    备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

    质量管理体系 >
    环境管理体系 >

     
    Status:
    Package:
    Temperature:

    相关资料


    MAX38886
    2.5V to 5.0V, 0.5A/2.5A, Charge/Discharge Regulator for Supercapacitor Backup Applications

    • 2.5V to 5V System Output Voltage
    • Up to 4.5V Capacitor Voltage Range
    • Up to 2.5A Peak Inductor Discharge Current

    MAX17783C
    4.5V to 60V, 2.5A, High Efficiency, Step-Down DC-DC Converter

    • Reduces External Components and Total Cost
    • Reduces Number of DC-DC Regulators to Stock
    • Reduces Power Dissipation

    MAX20028
    Step-Down Controller with Dual 2.1MHz Step-Down DC-DC Converters

    • High-Efficiency Voltage DC-DC Controller Saves Power
    • Dual 2.1MHz DC-DC Converters with Integrated FETs Saves Space
    • High Accuracy to Meet ASIL Specification

    MAX77533
    14V Input, 1.5A High-Efficiency Buck Converter with 9μA IQ

    • 1.5A Single Channel Buck Regulator
    • 3V to 14V Input Voltage Range
    • 0.8V to 99%VSUP Output Voltage Range

    MAX20766
    Smart Slave IC with Integrated Current and Temperature Sensors

    • Increased Power Density with Fewer External Components
    • Accurate Real-Time Telemetry of Critical Parameters
    • Advanced Self-Protection Features for the System and IC

    MAX20796
    Dual-Phase Scalable Integrated Voltage Regulator with PMBus Interface

    • Peak Efficiency 92%; Full-Load Efficiency 90% at VIN = 12V, VOUT = 1V
    • Operating Input Voltage Range 4.5V to 16V
    • Output Voltage Range is 0.5V to 5.5V

    MAX17227A
    400mV to 5.5V Input, 2A nanoPower Boost Converter with Short-Circuit Protection and True Shutdown

    • 350nA Quiescent Supply Current from Output
    • Output Short-Circuit Protection
    • True Shutdown Mode

    MAX20030
    Dual Buck, Sync Boost and LDO–Complete Front-End Power Supply with 17μA IQ

    • Meets Stringent OEM Module Power Consumption and Performance Specifications
    • Enables Crank-Ready Designs
    • EMI Reduction Features Reduce Interference with Sensitive Radio Bands without Sacrificing Wide Input Voltage Range

    MAX20031
    Dual Buck, Sync Boost and LDO–Complete Front-End Power Supply with 17μA IQ

    • Meets Stringent OEM Module Power Consumption and Performance Specifications
    • Enables Crank-Ready Designs
    • EMI Reduction Features Reduce Interference with Sensitive Radio Bands without Sacrificing Wide Input Voltage Range

    MAX25431
    Automotive 40V, 2.2MHz, H-Bridge Buck-Boost Controller

    • Meets Stringent Automotive Quality and Reliability Requirements
    • Efficient Solution in a Small Solutions Size
    • Low Quiescent Current Helps Designers Meet Stringent OEM Current Requirements

    MAX20710
    Integrated, Step-Down Switching Regulator with PMBus

    • High Power Density and Low Component Count
    • Optimized Component Performance and Efficiency with Reduced Design-In Time
    • Increased Power-Supply Reliability with System and IC Self-Protection Features

    MAX17760
    4.5V to 76V, 300mA, High-Efficiency, Synchronous Step-Down DC-DC Converter

    • Reduces External Components and Total Cost
    • Reduces Number of DC-DC Regulators to Stock
    • Reduces Power Dissipation

    MAX20430
    Four-Output Mini PMIC for Safety Applications

    • Multiple Functions for Small Size
    • High-Precision for ASIL Applications
    • Diagnostics and Redundant Circuits

    MAX18066
    High-Efficiency, 4A, Step-Down DC-DC Regulator with Internal Power Switches

    • Feature Integration Shrinks Solution Size
    • High Efficiency Conserves Power
    • Safe, Reliable, Accurate Operation

    MAX18166
    High-Efficiency, 4A, Step-Down DC-DC Regulator with Internal Power Switches

    • Feature Integration Shrinks Solution Size
    • High Efficiency Conserves Power
    • Safe, Reliable, Accurate Operation

    MAX77511
    10V输入、四相位、可配置、3A/相位、高效Buck转换器

    • 3A/相配置Buck调节器
    • 2.3V至10V输入电压范围
    • 0.25V至5.2V输出电压范围

    MAX77711
    10V输入、四相位、可配置、3A/相位、高效Buck转换器

    • 3A/相配置Buck调节器
    • 2.3V至10V输入电压范围
    • 0.25V至5.2V输出电压范围

    MAX15158, MAX15158A
    High-Voltage Multiphase Boost Controller

    • Wide Operating Range
    • Integration Reduces Design Footprint
    • Robust Fault Protection Improves Quality and Reliability

    MAX15158A
    High-Voltage Multiphase Boost Controller

    • Wide Operating Range
    • Integration Reduces Design Footprint
    • Robust Fault Protection Improves Quality and Reliability

    类型 编号 标题
    评估板9908MAX20472EVKIT MAX20472 评估板
    评估板9907MAX20471EVKIT MAX20471 评估板