MAX15021

双通道、4A/2A、4MHz、降压型DC-DC调节器,提供跟踪/排序功能

4MHz、双通道同步整流调节器,能够提供4A/2A电流,采用小尺寸5mm x 5mm封装


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说明

MAX15021是带有跟踪(同步和比例)和排序功能的双输出、脉宽调制(PWM)、降压型DC-DC调节器。该器件工作在2.5V至5.5V输入电压范围,每路输出电压可在0.6V与输入电压(VAVIN)之间调节。MAX15021能够提供高达4A (调节器1)和2A (调节器2)的输出电流。该器件还能够在500kHz至4MHz之间调节开关频率,从而在尺寸和性能之间进行平衡,实现优化设计。

MAX15021采用外部补偿电压模式控制架构,提供优异的噪声抑制,并可灵活选择电感值和电容类型。两路开关调节器可工作在180°错相模式,大大降低了输入纹波电流的RMS,减小了输入旁路电容的尺寸。

在上电和断电过程中,MAX15021具有跟踪(同步或比例)或排序功能。上电排序时,器件能够无干扰地进入预偏置输出。

此外,器件还可提供带有滞回的欠压锁定和数字软启动/软停止功能,从而消除上电和断电过程中的干扰。保护功能包括无损耗逐周期限流、打嗝模式输出短路保护以及热关断。

MAX15021采用节省空间的5mm x 5mm、28引脚TQFN-EP封装,工作于-40°C至+125°C温度范围。
MAX15021:典型工作电路 MAX15021:典型工作电路 放大+

关键特性

  • 2.5V至5.5V输入电压范围
  • 双路输出同步buck调节器
  • 内部开关支持4A和2A输出电流
  • 180°错相工作
  • 输出电压可调范围为0.6V至VAVIN
  • 无损耗逐周期电流检测
  • 外部补偿提供更灵活的设计
  • 数字软启动和软停止支持跟踪应用
  • 排序过程中,数字软启动可进入预偏置负载
  • 排序或同步/比例跟踪
  • 500kHz至4MHz可编程开关频率
  • 热关断和打嗝模式短路保护
  • 20µA关断电流
  • 100%最大占空比
  • 节省空间(5mm x 5mm)的28引脚TQFN封装

应用

  • 汽车多媒体设备
  • 多电压供电
  • 网络/电信
  • 以太网供电(PoE) IP电话
  • RFID读卡器
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeSynchronous SwitchingDC-DC OutputsOper. Freq.
(kHz)
Design ToolsPackage/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX15021 2.55.50.65.5Resistor4InternalYes24000EE-Sim
TQFN/28
$3.68 @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。

工具和模型

  • EE-Sim: MAX15021 设计和仿真
  • MAX15021 SIMPLIS Schematic
  • CAD Symbols and Footprints

  • MAX15021ATI+
  • MAX15021ATI+T
  • MAX15021ATI/V+
  • MAX15021ATI/V+T
  • 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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