MAX17631

4.5V至36V、1.5A、高效、同步降压型DC-DC转换器

高效、高压、同步降压型DC-DC转换器,集成MOSFET


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说明

MAX17631为高效、高压、同步降压型DC-DC转换器,集成MOSFET,工作在4.5V至36V输入电压范围。器件可提供高达1.5A电流。MAX17631有三种版本:MAX17631A、MAX17631B和MAX17631C。MAX17631A和MAX17631B分别为3.3V和5V固定输出器件;MAX17631C为可调节输出电压(0.9V至90% VIN)器件。内部补偿覆盖整个输出电压范围,无需外部补偿元件。

MAX17631采用峰值电流模式控制架构。器件可在强制脉宽调制(PWM)、脉冲频率调制(PFM)或非连续导通模式(DCM)三种开关状态下工作,支持在满载和轻载条件下实现高效率。MAX17631具有极低最小导通时间,允许高开关频率和较小方案尺寸。

MAX17631A/MAX17631B/MAX17631C的反馈电压调节精度在-40°C至+125°C温度范围内为±1.2%。器件采用16引脚(3mm x 3mm) TQFN封装。该器件可提供仿真模型。

关键特性

  • 减少外部元件,降低总体成本
    • 无外部同步肖特基操作
    • 内部补偿元件
    • 全陶瓷电容设计,布局紧凑
  • 减少DC-DC稳压器库存种类
    • 4.5V至36V较宽输入电压
    • 0.9V至90% VIN可调节输出电压范围
    • 整个温度范围内可提供高达1.5A电流
    • 400kHz至2.2MHz可调节频率,带外部时钟同步
    • 采用16引脚、3mm x 3mm TQFN封装
  • 降低功耗
    • 95%峰值效率
    • PFM和DCM模式,轻载时保持高效
    • 辅助自举电源(EXTVCC),提高效率
    • 2.8μA关断电流
  • 在恶劣工业环境下工作可靠
    • 打嗝式过流保护
    • 可调节和单调启动,带预偏置输出电压
    • 内置输出电压监测,带RESET (低电平有效)
    • 可编程EN/UVLO门限
    • 过热保护
    • 工业级高温-40°C至+125°C工作温度范围/-40°C至+150°C结温范围

应用

  • 工业控制电源
  • 通用负载点电源
  • 配电稳压器
  • 基站电源
  • 壁式变压器稳压
  • 高压单板系统
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)
Design ToolsPackage/PinsBudgetary
Price
minmaxminmaxmaxSee Notes
MAX17631 NEW!4.5360.932.4
3.3
5
Preset
Resistor
1.5InternalYesYes1
400
2200
EE-Sim
TQFN-CU/16
$1.50 @1k
查看所有Step-Down Switching Regulators (402)
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。


MAX17631C5EVKIT: Evaluation Kit for the MAX17631 5V Output-Voltage Application
MAX17631AEVKIT: Evaluation Kit for the MAX17631 3.3V Output-Voltage Application
MAX17631BEVKIT: Evaluation Kit for the MAX17631 5V Output-Voltage Application

质量和环境数据

申请可靠性报告: MAX17631 
无铅封装的锡(Sn)晶须报告

工具和模型

  • EE-Sim: MAX17631 设计和仿真
  • 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 >

     
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    Package:
    Temperature:

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