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TC1240ECH Folha de dados(PDF) 1 Page - TelCom Semiconductor, Inc |
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TC1240ECH Folha de dados(HTML) 1 Page - TelCom Semiconductor, Inc |
1 / 9 page 1 TC1240 Positive Doubling Charge Pump with Shutdown in SOT Package TC1240-1 7/7/00 Positive Doubling Charge Pump with Shutdown in SOT Package GENERAL DESCRIPTION The 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 con- sumption of the device to less than 1 µA. 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 180 µA and the device is available in a 6-Pin SOT-23A surface mount package. FEATURES s Space Saving 6-Pin SOT-23A Package s >99% Typical Voltage Conversion Efficiency s Voltage Doubling s Operates from +2.5V to +4.0V s Low Output Resistance (17 Ω Typical) s Only Two External Capacitors Required s Consumes 180 µA (Typical) in Active Mode s Power-Saving Shutdown Mode (1 µA Maximum) s Fully Compliant with 1.8V Logic Sytems APPLICATIONS s Cellular Phones s Pagers s PDAs, Portable Dataloggers s Battery-Powered Devices s Handheld Instruments ORDERING INFORMATION Part Number Package Temp. Range TC1240ECH 6-Pin SOT-23A –40 °C to +85°C TC1240 TelCom Semiconductor reserves the right to make changes in the circuitry and specifications of its devices. TYPICAL OPERATING CIRCUIT PIN CONFIGURATION Positive Voltage Doubler TC1240 VIN 2 x INPUT C+ C– C1 C2 INPUT GND OUT SHDN OFF ON 6-Pin SOT-23A C+ C– GND TC1240ECH 1 2 3 6 VIN OUT 4 5 SHDN NOTE: *6-Pin SOT-23A is equivalent to EIAJ SC-74 |
Nº de peça semelhante - TC1240ECH |
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Descrição semelhante - TC1240ECH |
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