New family of 60V/4A and 36V/8A buck-boost micromodule regulators

Linear Technology has introduced a new family of buck-boost µModule (micromodule) regulators. The LTM8055 and LTM8056 seamlessly regulate an output voltage equal to, greater or less than the input voltage. Housed in 15mm x 15mm x 4.92mm BGA package, the devices include the inductor, DC-DC regulator, MOSFETs and the supporting components. The LTM8055 operates from input voltages ranging from 5V to 36V, delivering a load current up to 8A. The LTM8056 has a higher input voltage, up to 60V with 4A load current capability. The compact solution provided by these devices free PCB board space in systems such as battery operated devices, industrial control, avionics and solar-powered equipment. For battery charging or precision load current adjustment, both devices enable input and output average current limit setting. Moreover, input and output current can be monitored by measuring voltage on a signal pin. Switching frequency is adjustable from 100kHz to 800kHz, while each device can be synchronized to an external clock frequency from 200kHz to 700kHz. With one resistor, the output voltage can be adjusted from 1.2V to 36V (LTM8055) and 1.2V to 48V (LTM8056). The LTM8055 and LTM8056 are operational for -40C to 125C and -55C to 125C.