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TC3682/TC3683/TC3684 pdf datas
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大小:333 |
2009-01-19
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The TC3682/TC3683/TC3684 are CMOS charge pump converters that provide an inverted doubled output from a single positive supply. An on-board oscillator provides the clock and only three external capacitors are required for full circuit implementation. Switching
frequencies are 12kHz for the TC3682, 35kHz for the TC3683, and 125kHz for the TC3684. When the SHDN pin is held at a logic low, the device goes into a very low power mode of operation consuming less than 1μA (typ) of supply current.Low output source impedance (typically 120Ω), provides output current up to 10mA. The TC3682/TC3683/
TC3684 feature a 1.8V to 5.5V operating voltage range and high efficiency, which make them an ideal choice for a wide variety of applications requiring a negative doubled voltage derived from a single positive supply (for example: generation of -7.2V from a +3.6V lithium
cell or -10V generated from a +5V logic supply).The minimum external part count, small physical size and shutdown mode feature make this family of products useful for a wide variety of negative bias power supply applications.
frequencies are 12kHz for the TC3682, 35kHz for the TC3683, and 125kHz for the TC3684. When the SHDN pin is held at a logic low, the device goes into a very low power mode of operation consuming less than 1μA (typ) of supply current.Low output source impedance (typically 120Ω), provides output current up to 10mA. The TC3682/TC3683/
TC3684 feature a 1.8V to 5.5V operating voltage range and high efficiency, which make them an ideal choice for a wide variety of applications requiring a negative doubled voltage derived from a single positive supply (for example: generation of -7.2V from a +3.6V lithium
cell or -10V generated from a +5V logic supply).The minimum external part count, small physical size and shutdown mode feature make this family of products useful for a wide variety of negative bias power supply applications.
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