MAX1951A

1MHz、2A、2.6V至5.5V输入、PWM DC-DC降压调节器,具有使能控制

1MHz、全陶瓷电容、2.6V至5.5V输入、2A、PWM降压型DC-DC调节器,只需10µF陶瓷电容


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说明

MAX1951A高效率、DC-DC降压开关转换器可以提供高达2A的输出电流。该器件能够从2.6V至5.5V的输入电压产生0.8V至VIN的可调输出电压,使得MAX1951A非常适合板上后续稳压应用。在整个负载、输入电源、工作温度范围内,MAX1951A的总输出误差小于±1.5%。

MAX1951A工作在1MHz固定工作频率,效率高达94%。较高的工作频率可减小外部元件尺寸。内部软启动控制电路降低了浪涌电流。短路和热过载保护提高了设计的可靠性。

MAX1951A提供带预偏置输出或无预置输出的安全启动。该功能简化了核电源和I/O电源应用中的电源跟踪设计以及冗余电源设计。

MAX1951A采用8引脚SO封装,工作在-40°C至+85°C扩展级温度范围。
MAX1951A:典型工作电路 MAX1951A:典型工作电路 放大+

关键特性

  • 紧凑的0.385in²电路板尺寸
  • 2A输出时可选用10µF陶瓷输入、输出电容以及2µH电感
  • 效率高达94%
  • 在整个负载、输入电源和工作温度范围内保持1.5%的输出精度
  • 确保2A的输出电流
  • 工作于2.6V至5.5V电源电压
  • 0.8V至VIN可调输出
  • 内部数字软启动
  • 短路和热过载保护
  • 1MHz开关频率减小了元件尺寸
  • 使能输入音频关断,可降低功耗
  • 安全启动至预偏置输出电压

应用

  • ASIC/DSP/µP/FPGA核及I/O电压
  • 网络与电信系统
  • 服务器
  • 机顶盒
  • TV
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
MAX1951A 2.65.50.85Resistor2InternalYes11000
SOIC (N)/8
$2.44 @1k
查看所有Step-Down Switching Regulators (388)
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

申请可靠性报告: MAX1951A 
无铅封装的锡(Sn)晶须报告
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 >

 
Status:
Package:
Temperature:

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