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Motore di ricerca datesheet componenti elettronici |
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TCM680 Scheda tecnica(PDF) 1 Page - TelCom Semiconductor, Inc |
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TCM680 Scheda tecnica(HTML) 1 Page - TelCom Semiconductor, Inc |
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1 / 7 page  4-13 TELCOM SEMICONDUCTOR, INC. 7 6 5 4 3 1 2 8 FEATURES s 99% Voltage Conversion Efficiency s 85% Power Conversion Efficiency s Wide Voltage Range ......................... +2.0V to +5.5V s Only 4 External Capacitors Required s Space Saving 8-Pin SOIC Design APPLICATIONS s ±10V From +5V Logic Supply s ±6V From a 3V Lithium Cell s Handheld Instruments s Portable Cellular Phones s LCD Display Bias Generator s Panel Meters s Operational Amplifier Power Supplies GENERAL DESCRIPTION The TCM680 is a dual charge pump voltage converter that develops output voltages of +2VIN and – 2VIN from a single input voltage of +2.0V to +5.5V. Common applica- tions include ±10V from a single +5V logic supply, and ±6V from a +3V lithium battery. The TCM680 is packaged in a space-saving 8-pin SOIC package and requires only four inexpensive external capacitors. The charge pumps are clocked by an on-board 8kHz oscillator. Low output source impedances (typically 150 Ω) provides maximum output currents of 10mA for each output. Typical power conversion efficiency is 85%. High efficiency, small installed size and low cost make the TCM680 suitable for a wide variety of applications that need both positive and negative power supplies derived from a single input voltage. TYPICAL OPERATING CIRCUIT PIN CONFIGURATIONS (DIP AND SOIC) C1 C1 V IN VOUT VOUT = (– 2 x VIN) VOUT VOUT = (2xVIN) GND GND GND TCM680 4.7 µF 4.7 µFC4 C3 C1 4.7 µF 2.0V<VIN < +5.5V C2 4.7 µF +5V C2 C2 + + + + + + – – – – + + 1 2 3 4 8 7 6 5 C1 VOUT VOUT VOUT VOUT VIN GND C1– VIN GND TCM680CPA TCM680EPA 18 2 7 3 6 4 5 TCM680COA TCM680EOA + + – – C1 + C2 + C1 + C2 + C2 – – C2 – ORDERING INFORMATION Part No. Package Temperature TCM680COA 8-Pin SOIC 0 °C to +70°C TCM680CPA 8-Pin Plastic DIP 0 °C to +70°C TCM680EOA 8-Pin SOIC – 40 °C to +85°C TCM680EPA 8-Pin Plastic DIP – 40 °C to +85°C TC7660EV Charge Pump Family Evaluation Kit +5V TO ±10V VOLTAGE CONVERTER TCM680 EVALUATION KIT AVAILABLE TC660-2 9/4/96 |
Codice articolo simile - TCM680 |
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Descrizione simile - TCM680 |
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