TC1142 Datasheet - Microchip

Inductorless -2x Boost/Buck Regulator

TC1142 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

TC1142 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. An internal voltage comparator inhibits the charge pump when VO.

TC1142 Datasheet (419.90 KB)