LM2681M6X ,Switched Capacitor Voltage ConverterFeaturesn Doubles or Splits Input Supply VoltageThe LM2681 CMOS charge-pump voltage converter oper- ..
LM2681M6X ,Switched Capacitor Voltage ConverterApplications+11V in half.n Cellular PhonesThe LM2681 operates at 160 kHz oscillator frequency ton P ..
LM2681M6X ,Switched Capacitor Voltage ConverterApplications+11V in half.n Cellular PhonesThe LM2681 operates at 160 kHz oscillator frequency ton P ..
LM2681M6X ,Switched Capacitor Voltage ConverterElectrical CharacteristicsLimits in standard typeface are for T = 25˚C, and limits in boldface type ..
LM2681M6X ,Switched Capacitor Voltage ConverterFeaturesn Doubles or Splits Input Supply VoltageThe LM2681 CMOS charge-pump voltage converter oper- ..
LM2682M ,Switched Capacitor Voltage Doubling InverterElectrical Characteristics.>Note2: The maximum power dissipation must be de-rated at elevated tempe ..
LM556CN ,Dual TimerMICROCIRCUIT DATA SHEETOriginal Creation Date: 08/02/95MNLM556-X REV 0BLLast Update Date: 11/12/98L ..
LM556J ,18 V, dual timerGeneral Description
The LM556 Dual timing circuit is a highly stable Controller
capable of prod ..
LM556J ,18 V, dual timerApplications
I Precision timing
I Pulse generation
I Sequential timing
I Time delay gen ..
LM556J-MIL ,Dual TimerLM556 Dual TimerMarch 2000LM556Dual Timer
LM556J-MIL ,Dual TimerFeaturesn Direct replacement for SE556/NE556The LM556 Dual timing circuit is a highly stable contro ..
LM5574MT ,SIMPLE SWITCHER? 75V, 0.5A Step-Down Switching Regulator 16-TSSOP -40 to 125Connection Diagram1 16VCC BST2 15PRESD3 14SWVIN4 13SYNC IS5 12COMP PGND6 11FB OUT7 10RT SS8 9RAMP A ..
LM2681M6-LM2681M6X
Switched Capacitor Voltage Converter
LM2681
Switched Capacitor Voltage Converter
General DescriptionThe LM2681 CMOS charge-pump voltage converter oper-
atesasa voltage doublerforan input voltageinthe rangeof
+2.5Vto +5.5V. Two low cost capacitors anda diode
(needed during start-up)is usedin this circuitto provideup20 mAof output current. The LM2681 can also workasa
voltage dividerto splita voltagein the rangeof +1.8Vto
+11Vin half.
The LM2681 operatesat 160 kHz oscillator frequencyto
reduce output resistance and voltage ripple. Withan operat-
ing currentof only 550µA (operating efficiency greater than
90% with most loads) the LM2681 provides ideal perfor-
mancefor battery powered systems. The deviceisin SOT-
23-6 package.
Features Doublesor Splits Input Supply Voltage SOT23-6 Package 15Ω Typical Output Impedance 90% Typical Conversion Efficiencyat20 mA
Applications Cellular Phones Pagers PDAs Operational Amplifier Power Suppliers Interface Power Suppliers Handheld Instruments
Basic Application Circuits
Voltage DoublerSplittingVinin Half
January 2003
LM2681
Switched
Capacitor
oltage
Converter
