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TC1142 - Inductorless -2x Boost/Buck Regulator

General Description

The TC1142 generates a regulated negative voltage from -3V to -5V at 20mA from an input of 2.5V to 5.5V, using only three external capacitors.

Other boost/buck switching regulators must use an inductor, which is larger and radiates EMI.

Key Features

  • TC1142 Package Type 8-Pin MSOP VOUT 1 C2.
  • 2 C2+ 3 8 CCLK VIN C1+ GND Inductorless -2x Boost/Buck Regulator Input Range 2.5V to 5.5V Regulated Output Options from -3.0 to -5.0V Output Current 20mA (max) 200kHz Internal Oscillator Frequency External Synchronizing Clock Input Logic Level Shutdown - 1µA (max) Supply Current.
  • Available in 8-Pin MSOP Package TC1142 7 6 5 C1.
  • 4.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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M Features • • • • • • TC1142 Package Type 8-Pin MSOP VOUT 1 C2– 2 C2+ 3 8 CCLK VIN C1+ GND Inductorless -2x Boost/Buck Regulator Input Range 2.5V to 5.5V Regulated Output Options from -3.0 to -5.0V Output Current 20mA (max) 200kHz Internal Oscillator Frequency External Synchronizing Clock Input Logic Level Shutdown - 1µA (max) Supply Current • Available in 8-Pin MSOP Package TC1142 7 6 5 C1– 4 Applications • Cellular Phones • Battery Powered/Portable Equipment General Description The TC1142 generates a regulated negative voltage from -3V to -5V at 20mA from an input of 2.5V to 5.5V, using only three external capacitors. Other boost/buck switching regulators must use an inductor, which is larger and radiates EMI.