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TC7660MJA Datasheet(PDF) 1 Page - Microchip Technology |
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TC7660MJA Datasheet(HTML) 1 Page - Microchip Technology |
1 / 18 page 2002 Microchip Technology Inc. DS21465B-page 1 M TC7660 Features • Wide Input Voltage Range: +1.5V to +10V • Efficient Voltage Conversion (99.9%, typ) • Excellent Power Efficiency (98%, typ) • Low Power Consumption: 80 µA (typ) @ VIN = 5V • Low Cost and Easy to Use - Only Two External Capacitors Required • Available in 8-Pin Small Outline (SOIC), 8-Pin PDIP and 8-Pin CERDIP Packages • Improved ESD Protection (3 kV HBM) • No External Diode Required for High-Voltage Operation Applications • RS-232 Negative Power Supply • Simple Conversion of +5V to ±5V Supplies • Voltage Multiplication VOUT = ± n V+ • Negative Supplies for Data Acquisition Systems and Instrumentation Package Types General Description The TC7660 is a pin-compatible replacement for the industry standard 7660 charge pump voltage converter. It converts a +1.5V to +10V input to a corresponding -1.5V to -10V output using only two low cost capacitors, eliminating inductors and their associated cost, size and electromagnetic interference (EMI). The on-board oscillator operates at a nominal frequency of 10 kHz. Operation below 10 kHz (for lower supply current applications) is possible by connecting an external capacitor from OSC to ground. The TC7660 is available in 8-Pin PDIP, 8-Pin Small Outline (SOIC) and 8-Pin CERDIP packages in commercial and extended temperature ranges. Functional Block Diagram 1 2 3 4 8 7 6 5 TC7660 NC CAP+ GND CAP- VOUT LOW VOLTAGE (LV) OSC PDIP/CERDIP/SOIC V+ TC7660 GND Internal Voltage Regulator RC Oscillator Voltage Level Translator V+ CAP+ 82 7 6 OSC LV 3 Logic Network VOUT 5 CAP- 4 ÷ 2 Internal Voltage Regulator Charge Pump DC-to-DC Voltage Converter |
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