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TC7660SCPA 데이터시트(PDF) 1 Page - Microchip Technology |
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TC7660SCPA 데이터시트(HTML) 1 Page - Microchip Technology |
1 / 24 page 2001-2015 Microchip Technology Inc. DS20001467C-page 1 TC7660S Features • Oscillator boost from 10 kHz to 45 kHz • Converts +5V Logic Supply to ±5V System • Wide Input Voltage Range: +1.5V to +12V • Efficient Voltage Conversion (99.9%, typical) • Excellent Power Efficiency (98%, typical) • Low PowerConsumption:80 µA(typical)@VIN=5V • Low Cost and Easy to Use - Only Two External Capacitors Required • Available in 8-Pin Small Outline (SOIC) and 8-Pin PDIP Packages • Improved ESD Protection (10 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 TC7660S device is a pin-compatible replacement for the industry standard 7660 charge pump voltage converter. It converts a +1.5V to +12V input to a corre- sponding -1.5V to -12V output using only two low-cost capacitors, eliminating inductors and their associated cost, size and electromagnetic interference (EMI). Added features include an extended supply range to 12V, and a frequency boost pin for higher operating fre- quency, allowing the use of smaller external capacitors. The on-board oscillator operates at a nominal fre- quency of 10 kHz. Frequency is increased to 45 kHz when pin 1 is connected to V+. Operation below 10 kHz (for lower supply current applications) is possible by connecting an external capacitor from OSC to ground (with pin 1 open). The TC7660S is available in 8-Pin PDIP and 8-Pin Small Outline (SOIC) packages in commercial and extended temperature ranges. 1 2 3 4 8 7 6 5 TC7660S BOOST CAP+ GND CAP- VOUT LOW VOLTAGE (LV) OSC PDIP/SOIC V+ Super Charge Pump DC-to-DC Voltage Converter |
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