200 mA LDO for the 2.8 V rail
The MAX1598EZK28-T is a single-output positive LDO from Analog Devices, delivering 200 mA at a fixed 2.8 V.
Dropout, quiescent current, and enable
Quiescent current is 180 µA typical — not an ultra-low-Iq part for always-on battery nodes, but acceptable for peripherals that cycle in and out of enable. The enable pin lets a GPIO or supervisor shut down the output, dropping the load to near zero when the rail is not needed. Input voltage range goes up to 6.5 V, so the part can run from a 5 V rail or a 3.6 V Li-ion cell without a pre-regulator.
Package and temperature grade
Housed in a TSOT-23-5 (thin SOT-23-5), the part occupies minimal board area — about 3×3 mm footprint.