Semtech SC630A/SC632A buck-boost regulators

Semtech has released the latest devices in its charge pump platform.

The 3.3 V, SC630A and 5 V, SC632A are said to be the world’s smallest 300 and 275 mA buck-boost regulators and are designed to be used with 2.2 µF capacitors.

The devices are three-mode charge pumps (1x, 1.5x, 2x) with continuous outputs of 300 mA (SC630A) and 275 mA (SC632A). They are designed to provide low EMI solutions compared with inductive boost regulators and are optimised for use in a wide range of applications.

The regulators operate as LDO linear devices when the input is greater than the 3.3 or 5 V output voltages. When the input is less than the required output voltages, the devices automatically activate the charge pump to provide voltage boost and the headroom needed for voltage regulation.

Both pumps offer a shutdown current of 0.1 µA and full protection features, including internal soft-start to minimise inrush current, as well as overcurrent, short-circuit and overtemperature protection.