PSRR profile and rail noise rejection
The LP5912-1.0DRVT delivers 65 dB of PSRR at 100 Hz, rolling off to 40 dB at 100 kHz. For a 1V rail feeding a sensitive ADC or PLL, that means ripple from a 100 kHz switching regulator is attenuated by 40 dB — enough to keep the supply noise below the converter's LSB threshold in most 12-bit systems. At 500 mA output, the fixed 1V rail powers low-voltage digital cores or I/O banks. The 55 µA quiescent current keeps the regulator's own draw negligible in battery-powered designs where every microamp counts.
Active lifecycle and compliance posture
ROHS3 compliant, so it clears EU and global regulatory requirements for lead-free assembly.
Protection and control for robust power delivery
Built-in protection covers over-temperature, short-circuit, and reverse polarity — the reverse polarity clamp means the regulator survives a swapped input without external diode protection. Control features include an enable pin for sequencing, a power-good flag for reset generation or supply-rail monitoring, and a soft-start circuit that limits inrush current during startup.