TC1240AECHTR

The TC1240AECHTR is a doubling CMOS charge Pump Voltage Converter for battery powered devices, PDAs and portable data loggers. The TC1240A doubles an input voltage that can range from +2.5 to +5.5V. Conversion efficiency is typically <gt/>99%. Internal oscillator frequency is 160kHz for both devices. The TC1240A have an active-high shutdown that limits the current consumption of the devices to less than 1μA. External component requirement is only two capacitors for standard voltage doubler applications. All other circuitry (including control, oscillator and power MOSFETs) are integrated on-chip.

• <gt/>99% Typical voltage conversion efficiency
• Voltage doubling
• Low output resistance (12Ω typical)
• Only two external capacitors required
• Consumes 550µA (typical) in active mode
• Power-saving shutdown mode (1µA maximum)
• Shutdown input fully compatible with 1.8V logic systems