MAX8952

2.5A降压型调节器,提供远端检测,2mm x 2mm WLP封装

允许手持产品的应用处理器运行在最高时钟频率


点击查看特定型号的库存状况。

说明

MAX8952高效DC-DC降压开关调节器可提供高达2.5A输出电流。器件工作于2.5V至5.5V输入电压范围,支持手持产品中的通用电池技术。输出电压可通过I²C接口在0.77V至1.40V范围内设置。远端检测保证了负载端精确的直流电压。在整个负载、电源和温度范围内输出总误差小于±1.5%。

该款IC工作于3.25MHz固定频率,较高的工作频率大大减小了外部元件尺寸。转换器的开关频率可以同步至系统主时钟。当同步至外部时钟时,IC测量外部时钟的频率,确保在开关频率转换到外部时钟频率之前保持该时钟稳定。

片内DAC允许以10mV步长调节输出电压。输出电压可以通过I²C接口直接设置,也可以预先加载至片内寄存器,然后使用2个VID逻辑信号选择适当的寄存器。器件的其它功能包括可降低浪涌电流的内部软启动控制电路、输出过压、过流和过热保护。
MAX8952:典型工作电路 MAX8952:典型工作电路 放大+

关键特性

  • 确保2.5A输出电流
  • 通过I²C接口可编程VOUT (770mV至1.40V,以10mV为步长)
  • 1.40V输出时,初始精度为±0.5%
  • 在整个负载、电源和温度范围内输出精度为±1.5% (DCR ≤ 38.5mΩ)
  • 电源省电模式提高轻载效率
  • 固定3.25MHz PWM开关频率
  • 1.0µH小尺寸电感
  • 可以同步到13MHz、19.2MHz或26MHz系统时钟
  • 过压和过流保护
  • 工作在2.5V至5.5V输入电源
  • 热关断保护
  • 片上FET和同步整流器
  • 400kHz I²C接口
  • < 1µA的关断电流
  • 16焊球、2mm x 2mm WLP封装

应用

  • 蜂窝电话与智能电话
  • PDA和MP3播放器
  • 平板PC
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeSynchronous SwitchingDC-DC OutputsOper. Freq.
(kHz)
Package/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX8952 2.55.50.771.4Digital/VID2.5InternalYes13250
WLP/16
$1.89 @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。

质量和环境数据

产品可靠性报告: MAX8952.pdf 
无铅封装的锡(Sn)晶须报告

CAD Symbols and Footprints

  • MAX8952AEWE+T
  • MAX8952BEWE+T
  • MAX8952EWE+
  • MAX8952EWE+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 >
    环境管理体系 >

     
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