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MAX17673

MAX17673

集成4.5V至60V、同步、1.5A、HV降压调节器和两个2.7V至5.5V、1A降压调节器

业界首款支持60V的多输出PMIC

数据资料
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概述

说明

MAX17673电源管理集成电路(PMIC)集成60V高压(HV)、高效同步DC-DC降压调节器和两个5.5V、高效同步DC-DC降压调节器。三个调节器全部提供集成功率MOSFET。

HV调节器工作在4.5V至60V输入电压范围，LV调节器工作在2.7V至5.5V输入电压范围。HV调节器支持高达1.5A负载电流，可在0.9V至5.5V范围内调节输出电压；LV调节器支持高达1A负载电流，可在0.75V至4.8V范围内调节输出电压。

MAX17673在三个调节器中提供独立的峰值电流模式控制、打嗝模式过流保护、ENABLE输入和电源就绪信号。LV调节器的开关频率可在1MHz至4MHz范围内调节，HV调节器可编程为工作在LV调节器的分频开关频率。HV调节器提供可调节软启动功能，而LV调节器则为内部固定软启动。用户可选择使器件工作在脉冲频率调制(PFM)或强制脉宽调制(PWM)模式。

器件采用28引脚、5mm x 5mm TQFN封装，工作在-40°C至+125°C温度范围。

MAX17673: Typical Application Circuit MAX17673: Typical Application Circuit 放大+

关键特性

  • 减少外部元件，降低总体成本
    • 同步操作，效率高
    • 内部补偿，具有较宽输出电压范围
    • 全陶瓷电容，布局紧凑
  • 集成3个DC-DC调节器
    • HV调节器的输入电压范围为4.5V至60V；LV调节器的输入电压范围为2.7V至5.5V。
    • HV调节器的输出调节范围为0.9V至5.5V；LV调节器的输出调节范围为0.75V至4.8V。
    • HV调节器可提供高达1.5A负载电流，LV调节器可提供1A负载电流。
    • 可调节开关频率：HV调节器为250KHz至800KHz，LV调节器为1MHz至4MHz
    • 可编程LV/HV开关频率比(2、3、4、5、6、7、8)
    • HV降压调节器具有EN/UVLO，LV调节器具有EN
  • 降低功耗
    • PFM模式下静态电流为550μA，PWM模式下静态电流为10.2mA
    • 峰值效率高于92%
    • 辅助自举LDO，提高效率
    • PFM模式，轻载时保持高效
    • 7.4μA关断电流
  • 在恶劣工业环境下工作可靠
    • 峰值限流保护
    • 打嗝式过载保护
    • 软启动降低启动期间的浪涌电流(HV调节器可调节)
    • 内置输出电压监测，带有POKH、POKA和POKB
    • 启动时单调进入预偏置负载状态
    • 过热保护
    • -40°C至+125°C工作温度范围

应用

  • 基站电源
  • 配电稳压器
  • FPGA/CPLD电源
  • 高压单板系统
  • 工业控制电源

参数规格

Part NumberVIN
(V)		VIN
(V)		VOUT1
(V)		VOUT1
(V)		Output Adjust. MethodIOUT1
(A)		Switch TypeSynchronous SwitchingPower Good SignalDC-DC OutputsOper. Freq.
(kHz)		Design ToolsPackage/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX17673 4.5600.95.5Resistor1.5InternalYesYes3
250
2200
EE-Sim
TQFN-CU/28
$2.78 @1k
查看所有Step-Down Switching Regulators (367)
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。

设计资源


MAX17673EVKIT: MAX176735V、3.3V、1.8V输出电压评估套件

质量和环境数据

申请可靠性报告: MAX17673 
无铅封装的锡（Sn）晶须报告

工具和模型

  • EE-Sim: MAX17673 设计和仿真

    • CAD Symbols and Footprints

  • MAX17673ATI+
    •

    质量与环境

    型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

    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。

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    环境管理体系 >

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    参考设计

    类型 编号 标题
    评估板10092MAX17673EVKIT MAX176735V、3.3V、1.8V输出电压评估套件