MAX828:开关电容电压反相器

无电感电源,用于寻呼LCD

The ultra-small MAX828/MAX829 monolithic, CMOS charge-pump inverters accept input voltages ranging from +1.5V to +5.5V. The MAX828 operates at 12kHz, and the MAX829 operates at 35kHz. Their high efficiency (greater than 90% over most of the load-current range) and low operating current (60µA for the MAX828) make these devices ideal for both battery-powered and board-level voltage-conversion applications. The MAX828/MAX829 combine low quiescent current and high efficiency. Oscillator control circuitry and four power MOSFET switches are included on-chip. Applications include 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 MAX1719/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
  • 95% Voltage Conversion Efficiency
  • Inverts Input Supply Voltage
  • 60µA Quiescent Current (MAX828)
  • +1.5V to +5.5V Input Voltage Range
  • Requires Only Two Capacitors
  • 25mA Output Current
MAX828、MAX829:典型工作电路
MAX828、MAX829:典型工作电路
应用
  • 电池供电应用
  • 蜂窝电话
  • 手持终端、PDA
  • 医疗仪器
  • 小型LCD板
数据手册DataSheet
语言下载文件备注
英文MAX828-MAX829.pdfRev 3; 05/2000
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
MAX828
  • Inverter
  • Unregulated
1.55.50.09-VIN0.02512
  • -40 to +85
  • 0 to +70
SOT/5$2.16 @1k
MAX8290.2635SOT/5
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
MAX828EUK停止供货MAX828EUK+SOT,;5引脚;9mm²-40°C至+85°CRoHS/无铅:否
MAX828EUK+生产中SOT,;5引脚;9mm²-40°C至+85°CRoHS/无铅:无铅
MAX828EUK+T生产中SOT,;5引脚;9mm²-40°C至+85°CRoHS/无铅:无铅
MAX828EUK-T停止供货MAX828EUK+TSOT,;5引脚;9mm²-40°C至+85°CRoHS/无铅:否
MAX828-MAX829.pdf MAX829
Tiny Charge Pump Provides Highly Reliable Low-Cost Solution to Negative Reference Voltage MAX829
Choosing the Right Power-Supply IC for your Application MAX6774
DC-DC Conversion Without Inductors MAX871
MAX828.pdf MAX828
MAX828-MAX829.pdf MAX828