LM2664 Datasheet | National Semiconductor

Description The LM2664 CMOS charge-pump voltage converter inverts a positive voltage in the range of +1.8V to +5.5V to the corresponding negative voltage of - 1.8V to - 5.5V. The LM2664 uses two low cost capacitors to provide up to 40 m A of output current. The LM2664 operates at 160 k Hz 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. The device is in SOT-23-6 package. Features n n n n n Inverts Input Supply Voltage SOT23-6 Package 12Ω Typical Output Impedance 91% Typical Conversion Efficiency at 40 m A 1µA Typical Shutdown Current Applications n n n n n n Cellular Phones Pagers PDAs Operational Amplifier Power Suppliers Interface Power Suppliers Handheld Instruments Basic Application Circuits Voltage Inverter DS100031-1 +5V to - 10V Converter DS100031-25 © 1999 National Semiconductor Corporation DS100031 .national. Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage (V+ to GND, or GND to OUT) SD 5.8V Continuous Power Dissipation (TA = 25˚C)(Note 3) TJMax(Note 3) θJA (Note 3) Operating Junction Temperature Range Storage Temperature Range Lead Temp. (Soldering, 10 seconds) ESD Rating 600 m W 150˚C 210˚C/W - 40˚ to 85˚C - 65˚C to +150˚C 300˚C 2k V (GND - 0.3V) to (V+ + 0.3V) 50 m A 1 sec. V+ and OUT Continuous Output Current Output Short-Circuit Duration to GND (Note 2) Electrical Characteristics Limits in standard typeface are for TJ = 25˚C, and limits in boldface type apply over the full operating temperature range. Unless otherwise specified: V+ = 5V, C1 = C2 = 3.3 µF. (Note 4) Symbol V+ IQ ISD VSD Parameter Supply Voltage Supply Current Shutdown Supply Current Shutdown Pin Input...