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MAX20026

MAX20026, MAX20026S

汽车应用、四通道、低压、降压型DC-DC转换，带低噪声LDO

四个1A、低压、高效DC-DC转换器和一个低噪声200mA LDO

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概述

说明

MAX20026/MAX20026S电源管理IC (PMIC)集成4个低压、高效、降压型DC-DC转换器和一个低噪声LDO线性调节器。其中每个降压型DC-DC转换器输出由工厂设置，可提供高达1.0A电流。LDO线性调节器输出可设置为2.5V或可调节，可提供200mA电流。PMIC工作在3.0V至5.5V，是汽车负载点和后端调节应用的理想选择。

PMIC具有固定频率PWM工作模式，开关频率为3.2MHz。高频操作允许使用全陶瓷电容设计，以及小尺寸外部元件。低阻片上开关保证在重负载下具有高效率，并将关键性的电感降至最小，与分立式方案相比，布局要简单得多。内部电流检测和环路补偿降低电路板空间和系统成本。

4个降压转换器中的2个转换器与内部时钟错相180°工作，可减小必须的输入电容，且改善EMI。所有降压转换器在AM带外工作在恒定PWM模式。PMIC提供SYNC输入，以同步到外部时钟。PMIC提供独立使能输入和电源就绪输出。

PMIC提供多种重要保护特性，包括输入过压保护、输入欠压监测、输入欠压锁定、逐周期限流，以及过热关断。当输入下降到低于欠压监测(UVM)门限时，输入欠压监测器将PGOOD驱动为低电平，表示掉电条件。

MAX20026/MAX20026S PMIC采用28引脚TQFN封装，带裸焊盘，工作在-40°C至+125°C汽车级温度范围。

关键特性

  • 高度集成减小方案尺寸
    • 四个降压型DC-DC转换器，集成MOSFET，每个转换器可提供1.0A电流
    • 一个200mA LDO，输出电压可调节
    • 混合负载线架构，支持较小输出电容
  • 设计性能支持汽车应用负载点调节
    • 工作在3.0V至5.5V供电电压范围
    • 每路输出拥有独立使能信号
    • UV/OV/UVM/PGOOD
    • 软启动和电源排序降低浪涌电流
  • 低噪声特性改善EMI性能
    • 3.2MHz开关频率
    • 强制PWM工作模式
    • 2路通道180°错相操作
    • SYNC输入
  • 支持汽车环境的可靠性
    • 28引脚(4mm x 4mm x 0.8mm) TQFN-EP封装
    • -40°C至+125°C工作温度范围
    • 经过AEC-Q100认证

应用

  • 汽车
  • 工业

参数规格

Part NumberPrimary TopologyMonitor/Control FeaturesDC-DC/Power FeaturesVOUT
(V)		VOUT
(V)		Max. IOUT
(A)		Oper. Freq.
(kHz)		Package/Pins
minmax
MAX20026 Step-Down
External Synch.
Output OVP
Output UVP
Shutdown
Volt. or PWM Controlled Output
Current Limit
Fixed Freq./PWM
Internal Switch
Soft Start
Sync. Rectifier
1413200
See Data Sheet
查看所有Multifunction PMICs (85)

Part NumberVIN
(V)		VIN
(V)		VOUT1
(V)		VOUT1
(V)		Preset VOUT
(V)		Output Adjust. MethodIOUT1
(A)		Switch TypeSynchronous SwitchingPower Good SignalDC-DC OutputsOper. Freq.
(kHz)		Package/Pins
minmaxminmax
MAX20026 --14--1InternalYesYes4-
TQFN-CU/28
MAX20026S 35.50.83.8
1.35
3.3
Preset
Resistor
3200
TQFN-CU/28
查看所有Step-Down Switching Regulators (388)
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


MAX20026EVKIT: Evaluation Kit for the MAX20026/MAX20026S

质量和环境数据

申请可靠性报告: MAX20026  MAX20026S 
无铅封装的锡（Sn）晶须报告

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10328MAX20026EVKIT MAX20026/MAX20026S 评估套件