LM2664 开关电容器电压转换器 | 德州仪器 TI.com.cn

LM2664 (正在供货)

开关电容器电压转换器

开关电容器电压转换器 - LM2664
数据表
 

描述

The LM2664 CMOS charge-pump voltage converter inverts a positive voltage in the range of 1.8 V to 5.5 V to the corresponding negative voltage of −1.8 V to −5.5 V. The device uses two low-cost capacitors to provide up to 40 mA of output current.

The LM2664 operates at 160-kHz oscillator frequency to reduce output resistance and voltage ripple. With an operating current of only 220 µA (operating efficiency greater than 91% with most loads) and 1-µA typical shutdown current, the LM2664 provides ideal performance for battery-powered systems.

特性

  • Inverts Input Supply Voltage
  • 6-Pin SOT-23 Package
  • 12-Ω Typical Output Impedance
  • 91% Typical Conversion Efficiency at 40 mA
  • 1-µA Typical Shutdown Current

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参数 与其它产品相比 降压/升压或反相充电泵 (无电感器)

 
Topology
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Operating Temperature Range (C)
Rating
Package Group
LM2664
Inverting    
1.8    
5.8    
-5.8    
-1.8    
0.04    
40    
80    
-40 to 85    
Catalog    
SOT-23