The LTM8002’s pinout is FMEA (Failure Mode Effects Analysis) compliant, so in the event of short-circuit to GND, short circuit to a neighboring pin or if the pin is left floating, the output voltage safely stays at or below the regulated voltage. The maximum junction temperature of the H grade is 150°C and I grade is 125°C.
The LTM8002 H grade can deliver 2.8A of output current up to 105°C ambient without a heat sink or airflow under the12VIN to 5VOUT condition. The device’s wide input voltage range, FMEA compliant pinout, high temperature operation and small solution provide a suitable point-of-load regulator for applications requiring stricter reliability and higher durability, such as automotive and industrial equipment.
The switching frequency is adjustable with a resistor or can be synchronised to an external clock from 200kHz to 3MHz to avoid interference by operating the device in or out of a system’s specific frequency or frequency range.
The LTM8002 has four modes: Burst Mode operation, pulse-skipping mode, pulse-skipping mode with spread spectrum mode and external synchronisation mode. The quiescent current in Burst Mode operation is 25µA, suitable for battery-operated systems, specifically for systems that require a ‘keep alive’ function.
The output voltage is adjustable with one resistor from 0.97-18V or fixed at 3.3V. This wide output voltage range provides the versatility of using one product to generate common system bus voltages of 3.3, 5, 12 and 15V.