MAX1720

SOT23封装、开关电容电压反相器,带有关断

尺寸最小的高效偏置电源,用于小型LCD/GaAsFET PA偏置电源: 小尺寸、无需电感、低电源电流


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说明

The ultra-small MAX1719/MAX1720/MAX1721 monolithic, CMOS charge-pump inverters accept input voltages ranging from +1.5V to +5.5V. The MAX1720 operates at 12kHz, and the MAX1719/MAX1721 operate at 125kHz. High efficiency, small external components, and logic-controlled shutdown make these devices ideal for both battery-powered and board-level voltage conversion applications.

Oscillator control circuitry and four power MOSFET switches are included on-chip. A typical MAX1719/MAX1720/MAX1721 application is generating a -5V supply from a +5V logic supply to power analog circuitry. All three parts come in a 6-pin SOT23 package and can deliver a continuous 25mA output current.

For pin-compatible SOT23 switched-capacitor voltage inverters without shutdown (5-pin SOT23), see the MAX828/MAX829 and MAX870/MAX871 data sheets. For applications requiring more power, the MAX860/MAX861 deliver up to 50mA. For regulated outputs (up to -2 x VIN), refer to the MAX868. The MAX860/MAX861 and MAX868 are available in space-saving µMAX® packages.
MAX1719、MAX1720、MAX1721:典型工作电路 MAX1719、MAX1720、MAX1721:典型工作电路 放大+

关键特性

  • 1nA Logic-Controlled Shutdown
  • 6-Pin SOT23 Package
  • 99.9% Voltage Conversion Efficiency
  • 50µA Quiescent Current (MAX1720)
  • +1.5V to +5.5V Input Voltage Range
  • 25mA Output Current
  • Requires Only Two 1µF Capacitors (MAX1719/MAX1721)

应用

  • 电池供电应用
  • GaAs PA偏置电源
  • 手持终端、PDA
  • 从正电源产生本地负电源
  • 小型LCD板
Part NumberTopologyVIN
(V)
VIN
(V)
ICC
(mA)
Unadj. VOUT
(V)
IOUT
(A)
Oper. Freq.
(kHz)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
minmaxmaxtypSee Notes
MAX1719 
Inverter
Unregulated
1.55.50.65-VIN0.025125-40 to +85
SOT23/6
$0.71 @1k
MAX1720 0.0912
SOT23/6
$0.72 @1k
MAX1721 0.65125
SOT23/6
$0.71 @1k
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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。

技术资料

设计指南 725 DC-DC Conversion Without Inductors

质量和环境数据

申请可靠性报告: MAX1720 
无铅封装的锡(Sn)晶须报告

CAD Symbols and Footprints

  • MAX1720EUT+
  • MAX1720EUT+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。

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    相关资料

    类型 编号 PDF 标题
    设计指南 725 DC-DC Conversion Without Inductors