TC1240 Series

Positive Doubling Charge Pumps with Shutdown

Catalog

Positive Doubling Charge Pumps with Shutdown

Part	Voltage - Input (Min) [Min]	Output Configuration	Voltage - Output (Min/Fixed)	Mounting Type	Number of Outputs	Operating Temperature [Max]	Operating Temperature [Min]	Output Type	Package / Case	Function	Frequency - Switching	Supplier Device Package	Voltage - Input (Max) [Max]	Current - Output	Voltage - Input (Max)
Microchip Technology TC1240AECHTR
Microchip Technology TC1240AECHTR	2.5 V	Positive	2Vin	Surface Mount	1	85 °C	-40 °C	1.81 mOhm	SOT-23-6	Ratiometric	80 kHz	SOT-23-6	5.5 V	40 mA
Microchip Technology TC1240ECHTR
Microchip Technology TC1240ECHTR	2.5 V	Positive	2Vin	Surface Mount	1	85 °C	-40 °C	1.81 mOhm	SOT-23-6	Ratiometric	80 kHz	SOT-23-6		40 mA	4 V

Catalog

Positive Doubling Charge Pumps with Shutdown

Key Features

• * >99% Typical Voltage Conversion Efficiency

• * Voltage Doubling

• * Low Output Resistance (12Ohms 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 Sytems

Description

The TC1240A is a doubling CMOS charge-pump voltage converter in a small 6-Pin SOT-23A package. TC1240A doubles an input voltage which can range from +2.5V to +5.5V. Conversion efficiency is typically >99%. Internal oscillator frequency is 160kHz for the TC1240A. The TC1240A 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 550µA and the device is available in a 6-Pin SOT-23A surface mount package.