TC3684

Input Voltage (V_IN to GND)...................... +6.0V, -0.3V
Output Voltage (V_OUT to GND).............. -12.0V, +0.3V
Current at V_OUT Pin............................................20mA
Short-Circuit Duration V_OUT to GND .............Indefinite
Power Dissipation (T_A 70)
        8-Pin MSOP .............................................320mW
Operating Temperature Range.............-40 to +85
Storage Temperature (Unbiased) .......-65to +150

*Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the operation sections of the specifications is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability.

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