TC1240/A Data Sheet
http://www.microchip.com/stellent/images/mchpsiteimages/dwnfolder.gifTC1240/A Data SheetThe TC1240 is a doubling CMOS charge-pump voltage converter in a small 6-Pin SOT-23A package. TC1240 doubles an input voltage which can range from +2.5V to +4.0V. Conversion efficiency is typically >99%. Internal oscillator frequency is 160kHz for the TC1240. The TC1240 has an active high shutdown which limits the current consumption of the device to less than 1µA. External component requirement is only two capacitors for standard voltage doubler applications. All other circuitry, including control, oscillator, power MOSFETs are integrated on-chip. Typical supply current is 180µA and the device is available in a 6-Pin SOT-23A surface mount package.
Parameter NameValue
Typical Active Output Current (mA)40
Output Voltage (V)Vout = 2Vin
Typical Quiescent Current (µA)180
Input Voltage Range (V)2.5 to 4.0
Operating Temp. Range (°C)-45 to 85
Device DescriptionInverting or Doubling
Features
- >99% Typical Voltage Conversion Efficiency
- Voltage Doubling
- Low Output Resistance (17Ohms Typical)
- Only Two External Capacitors Required
- Consumes 180µA (Typical) in Active Mode
- Power-Saving Shutdown Mode (1µA Maximum)
- Fully Compliant with 1.8V Logic Sytems
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