MAX870:开关电容电压反相器

紧凑的、无电感、小外形反相器,封装尺寸为0.025平方英寸,用于偏置GaAsFET PA

The ultra-small MAX870/MAX871 monolithic, CMOS charge-pump inverters accept input voltages ranging from +1.4V to +5.5V. The MAX870 operates at 125kHz, and the MAX871 operates at 500kHz. Their high efficiency (90%) and low operating current (0.7mA for the MAX870) 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 MAX870/ MAX871 application is generating a -5V supply from a +5V logic supply to power analog circuitry. Both parts come in a 5-pin SOT23-5 package and can deliver 25mA with a voltage drop of 500mV. For a similar device with logic-controlled shutdown, refer to the MAX1720/MAX1721. For applications requiring more power, the MAX860 delivers up to 50mA with a voltage drop of 600mV, in a space-saving µMAX package.

关键特性
  • 5-Pin SOT23-5 Package
  • 99% Voltage Conversion Efficiency
  • Invert Input Supply Voltage
  • 0.7mA Quiescent Current (MAX870)
  • +1.4V to +5.5V Input Voltage
  • Require Only Two Capacitors
  • 25mA Output Current
  • Shutdown Control
MAX870、MAX871:典型工作电路
MAX870、MAX871:典型工作电路
应用
  • 电池供电设备
  • 蜂窝电话
  • 手持终端、PDA
  • 从5V逻辑电源产生本地-5V电源
  • 医疗仪器
  • 小型LCD板
数据手册DataSheet
语言下载文件备注
英文MAX870-MAX871.pdfRev 1; 05/2004
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
MAX870
  • Inverter
  • Unregulated
1.45.51-VIN0.025125-40 to +85SOT/5$2.16 @1k
MAX8713.8500SOT/5$0.71 @1k
技术资料
质量和环境数据
相关产品
  • MAX860:50mA、频率可选的开关电容电压变换器
订购型号
型号状况推荐替代产品封装温度RoHS/无铅
MAX870EUK停止供货MAX870EUK+SOT,;5引脚;9mm²-40°C至+85°CRoHS/无铅:否
MAX870EUK+生产中SOT,;5引脚;9mm²-40°C至+85°CRoHS/无铅:无铅
MAX870EUK+T生产中SOT,;5引脚;9mm²-40°C至+85°CRoHS/无铅:无铅
MAX870EUK-T停止供货MAX870EUK+TSOT,;5引脚;9mm²-40°C至+85°CRoHS/无铅:否
MAX870-MAX871.pdf MAX871
DC-DC Conversion Without Inductors MAX871
MAX870.pdf MAX870
MAX870-MAX871.pdf MAX871