TC1240AECHTR

The TC1240/TC1240A is a doubling CMOS charge pump voltage converter in a small 6-Pin SOT-23A package. The TC1240 doubles an input voltage that can range from +2.5V to +4.0V, while the TC1240A doubles an input voltage that can range from +2.5V to +5.5V. Conversion efficiency is typically >99%. Internal oscillator frequency is 160 kHz for both devices. The TC1240 and TC1240A have an active-high shutdown that limits the current consumption of the devices to less than 1 μA. 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. Typical supply current is 180 μA for the TC1240 and 550 μA for the TC1240A. Both devices are available in a 6-Pin SOT23A surface mount package.

Applications

• Cellular Phones
• Pagers
• PDAs, Portable Data Loggers
• Battery Powered Devices
• Handheld Instruments

Key features

• Charge Pumps in 6-Pin SOT-23A Package
• >99% Typical Voltage Conversion Efficiency
• Voltage Doubling
• Input Voltage Range, TC1240: +2.5V to +4.0V, TC1240A: +2.5V to +5.5V
• Low Output Resistance, TC1240: 17Ω (Typical) TC1240A: 12Ω (Typical)
• Only Two External Capacitors Required
• Low Supply Current, TC1240: 180 μA (Typical) TC1240A: 550 μA (Typical)
• Power-Saving Shutdown Mode (1 μA Maximum)
• Shutdown Input Fully Compatible with 1.8V Logic Systems