MAX1836

24V内置开关、100%占空比、降压型转换器


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说明

The MAX1836/MAX1837 high-efficiency step-down converters provide a preset 3.3V or 5V output voltage from supply voltages as high as 24V. Using external feedback resistors, the output voltage can be adjusted from 1.25V to VIN. An internal current-limited switching MOSFET delivers load currents up to 125mA (MAX1836) or 250mA (MAX1837).

The unique current-limited control scheme, operating with duty cycles up to 100%, minimizes the dropout voltage (120mV at 100mA). Additionally, this control scheme reduces supply current under light loads to 12µA. High switching frequencies allow the use of tiny surface-mount inductors and output capacitors.

The MAX1836/MAX1837 step-down converters with internal switching MOSFETs are available in 6-pin SOT23 and 3mm x 3mm TDFN packages, making them ideal for low-cost, low-power, space-sensitive applications. For increased output drive capability, use the MAX1776 step-down converter that uses an internal 24V switch to deliver up to 500mA. For even higher currents, use the MAX1626/MAX1627 step-down controllers that drive an external P-channel MOSFET to deliver up to 20W.
MAX1836、MAX1837:典型工作电路 MAX1836、MAX1837:典型工作电路 放大+

关键特性

  • 4.5V to 24V Input Voltage Range
  • Preset 3.3V or 5V Output
  • Adjustable Output from 1.25V to VIN
  • Output Currents Up to 125mA (MAX1836) or 250mA (MAX1837)
  • Efficiency Over 90%
  • 12µA Quiescent Current
  • 3µA Shutdown Current
  • 100% Maximum Duty Cycle for Low Dropout
  • Small 6-Pin SOT23 and TDFN Packages

应用

  • 4mA至20mA环路供电
  • 9V电池系统
  • 备用电源
  • 分布式供电系统
  • 手持式设备
  • 工业控制电源
  • 笔记本电脑
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeDC-DC OutputsOper. Freq.
(kHz)
Design ToolsPackage/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX1836 4.5241.2524
3.3
5
Preset
Resistor
0.125Internal1200EE-Sim
SOT23/6
TDFN/6
$2.07 @1k
MAX1837 0.25
SOT23/6
TDFN/6
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。


MAX1837EVKIT: MAX1836、MAX1837评估板

技术资料

用户指南 5861 EE-SIM Design and Simulation Environment User Guide

质量和环境数据

产品可靠性报告: MAX1836.pdf 
无铅封装的锡(Sn)晶须报告

工具和模型

  • EE-Sim: MAX1836 设计和仿真
  • MAX1836 SIMPLIS Schematic
  • CAD Symbols and Footprints

  • MAX1836ETT33+
  • MAX1836ETT33+T
  • MAX1836ETT50+
  • MAX1836ETT50+T
  • MAX1836EUT+T
  • MAX1836EUT33
  • MAX1836EUT33#G16
  • MAX1836EUT33#TG16
  • MAX1836EUT33+
  • MAX1836EUT33+T
  • MAX1836EUT33-T
  • MAX1836EUT50#G16
  • MAX1836EUT50#TG16
  • MAX1836EUT50#TG40
  • MAX1836EUT50+
  • MAX1836EUT50+T
  • MAX1836EUT50-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。

    质量管理体系 >
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    类型 编号 PDF 标题
    用户指南 5861 EE-SIM Design and Simulation Environment User Guide
    类型 编号 标题
    评估板2515MAX1837EVKIT MAX1836、MAX1837评估板