Maxim
›
产品
›
电源管理
›
›
MAX17244

MAX17244

3.5V至36V、2.5A、同步Buck转换器，28μA静态电流和低EMI

低静态电流和同步转换延长电池寿命

数据资料
订阅

点击查看特定型号的库存状况。

概述

说明

MAX17244高效、同步降压型DC-DC转换器内置MOSFET，工作在3.5V至36V输入电压范围，具有42V输入瞬态保护。能够以98%占空比工作在低压差条件。转换器提供高达2.5A输出电流，产生3.3V/5V固定输出电压，同时具备在1V至10V范围内编程输出电压的能力。

MAX17244采用电流模式控制架构。器件可工作在脉宽调制(PWM)或脉冲频率调制(PFM)控制模式。PWM工作模式在任何负载条件下都保持固定频率工作，在对开关频率敏感的应用中非常有用。PFM工作模式消除了负向电感电流以及轻载条件下额外的跳脉冲，以提高效率。轻载应用中，外部同步引脚FSYNC逻辑输出允许器件工作在PFM模式或固定频率FPWM (强制PWM)模式；前者可降低耗流，后者可避免频率波动，最大程度减小EMI。对于设计用于RF收发器的电源，要求严格的辐射控制，固定频率FPWM模式极其有用。

器件采用小尺寸16引脚(5mm x 5mm) TQFN封装，带裸焊盘；以及16引脚TSSOP封装。-40°C至+85°C工作温度范围。

MAX17244: Internal Block Diagram MAX17244: Internal Block Diagram 放大+

关键特性

  • 无需外部元件，降低总体成本
    • 集成高边和低边开关支持同步操作，实现高效率和低成本
    • 全陶瓷电容方案，支持超紧凑方案尺寸
    • 220kHz至2.2MHz可调节频率，带外同步
    • 电源就绪输出和高压EN输入，简化电源排序
  • 提高设计灵活性
    • SYNCOUT引脚180°错相输出，支持级联电源，提高功率输出
    • 固定输出电压，输出精度为±2% (5V/3.3V)；或外部电阻可调(1V至10V)
  • 降低功耗
    • 峰值效率高于90%
    • PWM和PFM操作优化从重载到轻载的转换效率
    • LX摆率自动调节，整个工作频率范围内实现效率最优化
    • 5µA (典型值)低关断电流
    • 28µA (典型值)静态电流
  • 工作可靠
    • 42V输入电压瞬态保护
    • 固定8ms内部软启动，降低输入浪涌电流
    • 逐周期限流，自动恢复热关断
    • 通过扩频控制降低EMI辐射

应用

  • 配电稳压器
  • 通用负载点电源
  • 壁式变压器稳压

参数规格

Part NumberVIN
(V)		VIN
(V)		VOUT1
(V)		VOUT1
(V)		Preset VOUT
(V)		Output Adjust. MethodIOUT1
(A)		Switch TypePower Good SignalDC-DC OutputsOper. Freq.
(kHz)		Design ToolsPackage/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX17244 3.542110
3.3
5
Preset
Resistor
2.5InternalYes1
200
2200
EE-Sim
TQFN-CU/16
$2.31 @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


MAX17244EVKIT: Evaluation Kit for the MAX17244

质量和环境数据

申请可靠性报告: MAX17244 
无铅封装的锡（Sn）晶须报告

工具和模型

  • EE-Sim: MAX17244 设计和仿真
  • MAX17244 SIMPLIS Schematic

    • CAD Symbols and Footprints

  • MAX17244ETERA+
  • MAX17244ETERA+T
  • MAX17244ETERB+
  • MAX17244ETERB+T
  • MAX17244ETESA+
  • MAX17244ETESA+T
  • MAX17244ETESB+
  • MAX17244ETESB+T
    •

    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。

    质量管理体系 >
    环境管理体系 >

    订购

     
    Status:
    Package:
    Temperature:

    相关资料

    相关产品

    新产品


    MAX15158Z
    High-Voltage Multiphase Boost Controller

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

    MAX20079
    Automotive 36V 3.5A Buck Converter with 3.5μA IQ

    • Synchronous DC-DC Converter with Integrated FETs
    • Small Solution Size Saves Space
    • PGOOD Output and High-Voltage EN Input Simplify Power Sequencing

    MAX20026S
    Automotive Quad, Low-Voltage Step-Down DC-DC Converters with Low-Noise LDO

    • High-Integration Shrinks Solution Size
    • Performance Designed for Automotive Point-of-Load Regulation
    • Low-Noise Features Improve EMI Performance

    MAX20026, MAX20026S
    Automotive Quad, Low-Voltage Step-Down DC-DC Converters with Low-Noise LDO

    • High-Integration Shrinks Solution Size
    • Performance Designed for Automotive Point-of-Load Regulation
    • Low-Noise Features Improve EMI Performance

    MAX20801
    MPP Tracking DC-DC Converter

    • Performs MPPT on 20-24 Series Connected PV Cells
    • Fast MPPT Reacts Quickly to Changing Conditions
    • Integrated Voltage-Limiting Clamps Output Voltage

    MAX20800
    MPP Tracking DC-DC Converter

    • Performs MPPT on 20-24 Series Connected PV Cells
    • Fast MPPT Reacts Quickly to Changing Conditions
    • Integrated Voltage-Limiting Clamps Output Voltage

    MAX20059
    72V, 1A, Automotive Synchronous Step-Down DC-DC Converter

    • Synchronous DC-DC Converters with Integrated FETs
    • Flexibility
    • Active-Low RESET Output and EN Input (26V max) Simplify Power Sequencing

    MAX20058
    60V, 1A, Automotive Synchronous Step-Down DC-DC Converter

    • Synchronous DC-DC Converters with Integrated FETs
    • Flexibility
    • Active-Low RESET Output and EN Input (26V max) Simplify Power Sequencing

    MAXM15066
    4.5V to 60V, 300mA Step-Down uSLIC Power Module

    • Easy to Use
    • High Efficiency
    • Flexible Design

    MAXM15067
    4.5V to 60V, 300mA Step-Down uSLIC Power Module

    • Easy to Use
    • High Efficiency
    • Flexible Design

    MAXM15065
    4.5V to 60V, 300mA Step-Down uSLIC Power Module

    • Easy to Use
    • High Efficiency
    • Flexible Design

    MAXM17904
    4.5V to 24V, 300mA Himalaya uSLIC Step-Down Power Module

    • Easy to Use
    • High Efficiency
    • Flexible Design

    MAXM17905
    4.5V to 24V, 300mA Himalaya uSLIC Step-Down Power Module

    • Easy to Use
    • High Efficiency
    • Flexible Design

    MAXM17906
    4.5V to 24V, 300mA Himalaya uSLIC Step-Down Power Module

    • Easy to Use
    • High Efficiency
    • Flexible Design

    MAX20048
    Automotive 40V, 55µA IQ, 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

    MAX20010C
    Automotive Single 6A Step-Down Converters

    • Fully Integrated, Synchronous 6A DC-DC Converter Enables Small Solution Size
    • High-Precision Voltage Regulator for Applications Processors
    • Low-Noise Feature Reduces EMI

    MAX20010D
    Automotive Single 6A Step-Down Converters

    • Fully Integrated, Synchronous 6A DC-DC Converter Enables Small Solution Size
    • High-Precision Voltage Regulator for Applications Processors
    • Low-Noise Feature Reduces EMI

    MAX20039
    Automotive, 2V to 36V, 2.2MHz, 0.6A/1.2A Buck-Boost Converters with Integrated H-Bridge Architecture

    • Meets Stringent Automotive Quality and Reliability Requirements
    • Low Quiescent Current Helps Designers Meet Stringent OEM Current Requirements (B and D version only)
    • High Switching Frequency Allows Use of Small External Components

    MAX20040
    Automotive, 2V to 36V, 2.2MHz, 0.6A/1.2A Buck-Boost Converters with Integrated H-Bridge Architecture

    • Meets Stringent Automotive Quality and Reliability Requirements
    • Low Quiescent Current Helps Designers Meet Stringent OEM Current Requirements (B and D version only)
    • High Switching Frequency Allows Use of Small External Components

    MAX20029B
    Automotive Quad/Triple/Quad Low-Voltage Step-Down DC-DC Converters

    • Quad Step-Down DC-DC Converters with Integrated FETs
    • Operate from 3.0V to 5.5V Supply Voltage
    • 1.0V to 4.0V Fixed or Adjustable Output Voltage

    MAX20029, MAX20029B, MAX20029C
    Automotive Quad/Triple/Quad Low-Voltage Step-Down DC-DC Converters

    • Quad Step-Down DC-DC Converters with Integrated FETs
    • Operate from 3.0V to 5.5V Supply Voltage
    • 1.0V to 4.0V Fixed or Adjustable Output Voltage

    MAX20029C
    Automotive Quad/Triple/Quad Low-Voltage Step-Down DC-DC Converters

    • Quad Step-Down DC-DC Converters with Integrated FETs
    • Operate from 3.0V to 5.5V Supply Voltage
    • 1.0V to 4.0V Fixed or Adjustable Output Voltage

    MAX77827
    5.5V Input, 1.8A/3.1A Switch Buck-Boost Converter with 6μA IQ

    • 1.8V to 5.5V Input Voltage Range
    • 2.3V to 5.3V Single Resistor Adjustable Output Voltage
    • 1.6A Maximum Output Current (3.1A ILIM Option, Buck Mode)

    MAXM15465
    4.5V to 42V, 300mA Himalaya uSLIC Step-Down Power Module

    • Easy to Use
    • High Efficiency
    • Flexible Design

    MAXM15466
    4.5V to 42V, 300mA Himalaya uSLIC Step-Down Power Module

    • Easy to Use
    • High Efficiency
    • Flexible Design

    MAXM15467
    4.5V to 42V, 300mA Himalaya uSLIC Step-Down Power Module

    • Easy to Use
    • High Efficiency
    • Flexible Design

    MAXM17624
    2.9V to 5.5V, 1A Himalaya uSLIC Step-Down Power Modules

    • Easy to Use
    • High Efficiency
    • Flexible Design

    MAXM17623
    2.9V to 5.5V, 1A Himalaya uSLIC Step-Down Power Modules

    • Easy to Use
    • High Efficiency
    • Flexible Design

    工具和模型

    参考设计