Dual-rail LDO for mixed-voltage sensor and MCU supplies
The MIC5380-MGYFT-TR is a dual-output positive-voltage LDO from Microchip Technology, delivering two independent 150 mA rails from a single 5.5 V max input. The fixed outputs are 1.8 V and 2.8 V — a common pairing for powering a 1.8 V MCU core alongside a 2.8 V analog front-end or sensor bias rail, all in a single 1x1 mm 6-TMLF package.
Noise rejection and quiescent draw for always-on portable gear
PSRR is 60 dB at 1 kHz — this attenuates switching-regulator ripple by a factor of 1000 at that frequency, keeping the output clean enough for a 10-bit ADC reference or a precision op-amp supply. Above 100 kHz the rejection rolls off, so upstream filtering ahead of the LDO is still advisable if the switcher runs at 2 MHz. Quiescent current is 45 µA typical, with a maximum supply current of 85 µA. For a battery-powered device that spends most of its time in a low-power idle state, this LDO's own draw sits below the self-discharge rate of a 100 mAh coin cell — the system can sleep for weeks without draining the rail.
Thermal and protection envelope for automotive-grade environments
Operating temperature spans -40°C to 125°C, covering the full automotive Grade 1 ambient range and industrial extended-temperature applications. Built-in over-current and over-temperature protection means the LDO folds back or shuts down before the die exceeds its safe operating area — no external crowbar or thermal switch needed for fault-tolerant rail design.
Active lifecycle and compliance for BOM planning
ROHS3 compliant, with no restricted substances under the current directive.