MAX1534ETE

高效率、三路输出、不间断电源,用于笔记本电脑

高效率、三路输出、不间断电源,用于笔记本电脑


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说明

MAX1534是高效、三输出的电源芯片,用于不间断供电(持续供电)。这款500mA的buck控制器内置0.5Ω限流PMOS管,能够将电池或墙上适配器电源降压至固定的5V或一个可调的输出电压。两个集成的低电压线性稳压器置于该输出之后,可提供两个独立的、预置输出电压为3.3V或1.8V或可调节的输出电压。

MAX1534 buck稳压器采用峰值电流受限的脉冲频率调制(PFM)结构,轻载时可获得很高转换效率,有利于延长电池寿命。高开关频率(高达200kHz)允许使用小巧的表贴电感和输出电容。100%占空比使压差降至最小(500mA时250mV)。

低压差线性稳压器采用内置PMOS调整管,可进一步降低电源电流、并提供高达160mA的连续电流。

MAX1534包含一个电源就绪(POK)输出,用于指示所有输出电压是否正常。/SHDN输入引脚具有精度为4%的门限,可以被用做低电池检测。

MAX1534采用小尺寸、16引脚、薄型QFN (4mm x 4mm)封装,比分立方案节省33%的板上空间。
MAX1534:典型工作电路 MAX1534:典型工作电路 放大+

关键特性

  • 包含一路开关控制器和两路线性稳压器
  • 开关控制器
    • +4.5V至+24V输入电压范围
    • 效率高于95%
    • 最高500mA输出电流
    • 最高200kHz开关频率
    • 固定5V或可调输出电压
    • 内置0.5Ω PMOS开关
    • 100%占空比提供低压差特性
  • 两个低压差线性稳压器:
    • 高达160mA的输出电流(每路)
    • OUT1:3.3V或可调电压输出
    • OUT2:1.8V或可调电压输出
  • ±1.5%输出电压精度
  • ±4%关断精度用于低电池检测
  • 热关断保护
  • 电源就绪(POK)输出
  • 1mW待机功率(典型值)

应用

  • 2节至4节Li+电池供电设备
  • 手持式设备
  • 不间断电源
  • 笔记本电脑和亚笔记本电脑
  • 待机电源
  • Wake On LAN®

请查看具体的参数规格 Step-Down Switching Regulators (409)


Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
IOUT1
(A)
(min)(max)(min)(max)
MAX1534 4.52410.55

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。

MAX1534EVKIT: MAX1534评估板
申请可靠性报告: MAX1534ETE 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

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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