Semtech announced the very cost competitive SC560, a family of ultra small, dual-output low dropout (LDO) linear regulators. The SC560 devices measure 1.5 x 1.5 x 0.6mm (MLPQ-UT-8) and feature a dropout of only 200mV maximum at a current of 200mA per output. The SC560 devices are optimized for battery-powered and low power applications with a very low 100μA quiescent current (both outputs enabled), and a 0.1μA shutdown current. The input voltage range for all devices is 2.5V to 5.5V, and the optional noise bypass pin enables the SC560 to be used to power noise sensitive devices.

There are eight devices in the SC560 family, each distinguished by their output voltages and pin options. Three devices, the SC560A, B and C, have adjustable output voltages on both LDOs, ranging from 1.2V to 3.3V. The SC560A also features a low-noise bypass, the SC560B offers a second LDO enable pin and the SC560C comes with a power good pin with 200ms delay.

The five other parts (SC560D, E, F, G, H) offer combinations of fixed voltage outputs for specific applications, ranging from 1.5V to 3.3V. Each of these devices is fully featured with individual enable capabilities for each LDO, a low noise bypass and power good output with 200ms delay that can be used for system reset. The devices also provide protection circuitry such as current limiting, under-voltage lockout, and thermal protection.

The SC560 gives designers all that they expect in a state-of-the art LDO regulator while requiring only 40% of the board space of competitive alternatives. With dual 300mA output capability, low dropout, low noise, two enable pins, a PGOOD timer for microprocessor power-on-reset, and tiny size, the SC560 matches or exceeds the requirements for most low power applications.

Also new from Semtech are two versions of the SC1458 dual output LDO linear regulators, which come in 3 x 3 mm MLPD-W6 packages, but boast the same features as the SC560 devices. The SC1458A has fixed outputs of 2.8V and 1.8V, and the SC1458B has fixed outputs of 2.85V and 2.85V.