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

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.

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)
MAX1719、MAX1720、MAX1721:典型工作电路
MAX1719、MAX1720、MAX1721:典型工作电路
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
数据手册DataSheet
语言下载文件备注
英文MAX1719-MAX1721.pdfRev 2; 06/2004
关键参数
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 +85SOT/6$0.71 @1k
MAX17200.0912SOT/6
MAX17210.65125SOT/6
技术资料
相关产品
  • MAX860:50mA、频率可选的开关电容电压变换器
  • MAX868:稳压型、可调节、-2倍压反相电荷泵
  • MAX870:开关电容电压反相器
  • MAX828:开关电容电压反相器
订购型号
型号状况推荐替代产品封装温度RoHS/无铅
MAX1720EUT生产中SOT,;6引脚;9mm²-40°C至+85°CRoHS/无铅:否
MAX1720EUT+生产中SOT,;6引脚;9mm²-40°C至+85°CRoHS/无铅:无铅
MAX1720EUT+T生产中SOT,;6引脚;9mm²-40°C至+85°CRoHS/无铅:无铅
MAX1720EUT-T停止供货MAX1720EUT+TSOT,;6引脚;9mm²-40°C至+85°CRoHS/无铅:否
MAX1719-MAX1721.pdf MAX1721
DC-DC Conversion Without Inductors MAX871
MAX1719-MAX1721.pdf MAX1721