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TC7660EPA датащи(PDF) 1 Page - Microchip Technology |
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TC7660EPA датащи(HTML) 1 Page - Microchip Technology |
1 / 18 page © 2005 Microchip Technology Inc. DS21486C-page 1 TCM680 Features • 99% Voltage Conversion Efficiency • 85% Power Conversion Efficiency • Input Voltage Range: - +2.0V to +5.5V • Only 4 External Capacitors Required • 8-Pin SOIC Package Applications • ±10V From +5V Logic Supply • ±6V From a 3V Lithium Cell • Handheld Instruments • Portable Cellular Phones • LCD Display Bias Generator • Panel Meters • Operational Amplifier Power Supplies Typical Operating Circuit General Description The TCM680 is a dual charge pump, voltage converter that produces output voltages of +2VIN and -2VIN from a single input voltage of +2.0V to +5.5V. Common applications include ±10V from a single +5V logic supply and ±6V from a +3V lithium battery. The TCM680 is packaged in 8-pin SOIC and PDIP packages and requires only four inexpensive, external capacitors. The charge pumps are clocked by an on- board 8 kHz oscillator. Low output source impedances (typically 140 Ω) provide maximum output currents of 10 mA for each output. Typical power conversion effi- ciency is 85%. High efficiency, small 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. Package Type VOUT - = -(2 x V IN) GND TCM680 VOUT + + + + GND GND + VOUT + = (2 x V IN) +5V VIN VOUT - C1 + C2 + C1 - C2 - C1 4.7 µF C2 4.7 µF C4 4.7 µF C3 4.7 µF 1 2 3 4 8 7 6 5 TCM680CPA TCM680EPA GND VOUT - C1 + PDIP VIN C2 + C1 - C2 - VOUT + 1 2 3 4 8 7 6 5 TCM680COA TCM680EOA GND VOUT - C1 + SOIC VIN C2 + C1 - C2 - VOUT + +5V To ±10V Voltage Converter Obsolete Device |
Аналогичный номер детали - TC7660EPA |
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Аналогичное описание - TC7660EPA |
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