TC1240/TC1240A
Positive Doubling Charge Pumps with Shutdown
in a SOT-23 Package
Features General Description 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 ВµA. 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: 17пЃ— (Typical)
TC1240A: 12пЃ— (Typical)
Only Two External Capacitors Required
Low Supply Current, TC1240: 180 ВµA (Typical)
TC1240A: 550 ВµA (Typical)
Power-Saving Shutdown Mode (1 ВµA Maximum) …
