5V fixed LDO for automotive and industrial rails
The BD3571YHFP-MTR: It accepts a wide input range up to 36 V, making it suitable for 12 V and 24 V automotive or industrial supply rails that see transients and cold-crank dips. The 50 µA quiescent current keeps the regulator's own draw low in always-on ECU or sensor modules, while the 55 dB PSRR at 120 Hz filters 60/100 Hz ripple from a rectified or switched front end — important for analog supply rails feeding an ADC or op-amp.
Dropout, protection, and temperature range
At full 500 mA the dropout is higher but not specified; derate the headroom accordingly. Built-in over-current, over-temperature, and short-circuit protection let the regulator survive a faulted load without external crowbar or fuse — the thermal shutdown cycles the output until the fault clears.
Package and thermal path
The HRP-5 supplier package designation matches the standard D²Pak footprint.