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MAX5033

MAX5033

500mA、76V、高效率、MAXPower降压型DC-DC转换器

500mA、76V、高效率、MAXPower降压型DC-DC转换器，空载时仅消耗350µA静态电流

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概述

说明

MAX5033为易于使用、高效率、高压、降压型DC-DC转换器，工作于高达76V的输入电压，空载时仅消耗270µA的静态电流。脉宽调制(PWM)转换器重载时工作在固定的125kHz开关频率，轻载时可自动切换到脉冲跳频模式，以达到低静态电流和高效率。MAX5033包括内部频率补偿，简化了电路应用。器件内部采用低导通电阻、高电压DMOS晶体管，以获得高效率和降低整个系统成本。此器件包括欠压锁存、逐周期限流、间歇模式输出短路保护及热关断功能。

MAX5033可提供高达500mA的输出电流。提供外部关断模式，具有10µA (典型)的关断电流。MAX5033A/B/C型号分别提供固定的3.3V、5V或12V输出电压；MAX5033D提供1.25V至13.2V的可调输出电压。

MAX5033采用节省空间的8引脚SO或8引脚塑料DIP封装，工作在汽车级(-40°C至+125°C)温度范围内。
MAX5033：典型工作电路 MAX5033：典型工作电路 放大+

关键特性

  • 7.5V至76V的宽输入电压范围
  • 提供固定的(3.3V、5V、12V)及可调的电压(1.25V至13.2V)
  • 500mA输出电流
  • 效率高达94%
  • 内置0.4Ω高端DMOS FET
  • 空载时，270µA的静态电流；10µA的关断电流
  • 内部频率补偿
  • 固定的125kHz开关频率
  • 热关断及短路电流限制
  • 8引脚SO和PDIP封装

应用

  • 消费类电子
  • 分布式电源
  • 工业

参数规格

Part NumberVIN
(V)		VIN
(V)		VOUT1
(V)		VOUT1
(V)		Preset VOUT
(V)		Output Adjust. MethodIOUT1
(A)		Switch TypeDC-DC OutputsOper. Freq.
(kHz)		Package/PinsBudgetary
Price
minmaxminmaxmaxSee Notes
MAX5033 7.5761.2513.2
3.3
5
12
Preset
Resistor
0.5Internal1125
PDIP/8
SOIC (N)/8
$1.58 @1k
查看所有Step-Down Switching Regulators (404)
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

技术资料

用户指南 5861 EE-SIM Design and Simulation Environment User Guide
设计指南 4701 可编程逻辑控制器(PLC)和主要系统模块的功能
参考原理图 4381 MR-16 LED驱动器和用于脉冲LED冷却器供电的5V辅助电源
应用笔记 3668 为高亮度LED提供高效电流驱动

质量和环境数据

产品可靠性报告: MAX5033.pdf 
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。

质量管理体系 >
环境管理体系 >

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    技术文档

    参考设计

    类型 编号 标题
    参考电路4381MR-16 LED驱动器和用于脉冲LED冷却器供电的5V辅助电源