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TC1240AECH データシート(PDF) 1 Page - Microchip Technology |
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TC1240AECH データシート(HTML) 1 Page - Microchip Technology |
1 / 18 page 2001-2012 Microchip Technology Inc. DS21516D-page 1 TC1240/TC1240A 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: 17 (Typical) TC1240A: 12 (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 Applications • Cellular Phones • Pagers • PDAs, Portable Data Loggers • Battery Powered Devices • Handheld Instruments Package Type 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 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 cur- rent is 180 µA for the TC1240 and 550 µA for the TC1240A. Both devices are available in a 6-Pin SOT- 23A surface mount package. Typical Application Circuit NOTE: 6-Pin SOT-23A is equivalent to the C- 6 6-Pin SOT-23A TC1240ECH TC1240AECH 13 4 2 VIN C+ GND 5 SHDN VOUT EIAJ (SC-74A) Positive Voltage Doubler VIN 2 x INPUT C+ C- C1 INPUT GND VOUT SHDN OFF ON TC1240 TC1240A + + C2 Positive Doubling Charge Pumps with Shutdown in a SOT-23 Package |
同様の部品番号 - TC1240AECH |
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同様の説明 - TC1240AECH |
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