5.0 V fixed LDO in a 0.93x1.11 mm µSMD
The LP2980AIBP-5.0 is a single-output positive fixed LDO from Texas Instruments, delivering a regulated 5.0 V output at up to 50 mA with a maximum dropout of 0.22 V at full load. It packs into a 5-VFBGA (5-µSMD) package measuring 0.93x1.11 mm, making it a fit for space-constrained portable or sensor modules where board area is the limiting factor.
63 dB PSRR at 1 kHz — noise rejection for analog loads
The 63 dB PSRR at 1 kHz means the output rejects supply ripple by a factor of roughly 1400, which is adequate for powering an op-amp or ADC reference from a noisy bus rail. Protection features include over-current, over-temperature, and short-circuit shutdown, which cover the common fault conditions in a 50 mA rail.
The 5-µSMD package is a non-standard footprint — if a board respin is possible, a pin-compatible LP2980 variant in a larger package (e.g., SOT-23-5) may be easier to source, but that requires layout change.