The LP2989 is a fixed-output 500 mA precision LDO regulator designed for use with ceramic output capacitors. It features ultra-low dropout voltage, low output noise, and low quiescent current.
The LP2989 is a fixed‑output 500 mA precision LDO regulator designed for use with ceramic output capacitors. It offers ultra‑low dropout voltage, very low output noise, and a shutdown mode that draws less than 0.8 pA. The device provides 0.75 % output voltage accuracy (A‑grade) and operates over a wide supply range up to 16 V.
The regulator is available in SO‑8, Mini SO‑8, and 8‑lead LLP surface‑mount packages. The document includes connection diagrams, ordering information for multiple voltage grades, absolute maximum ratings, electrical characteristics, physical dimensions, and a life‑support policy disclaimer.
| Dropout Voltage (500 mA) | 310 mV (typical) |
|---|---|
| Ground Pin Current (500 mA) | 3 mA (typical) |
| Output Voltage Accuracy (A‑grade) | 0.75 % |
| Maximum Supply Voltage | 16 V |
| Operating Temperature Range | -40 °C to +125 °C |
| Package Types | SO‑8, Mini SO‑8, 8‑Lead LLP |
| Peak Output Current | 800 mA (typical) |
The typical dropout voltage is 310 mV at a 500 mA load.
The A‑grade version provides 0.75 % output voltage accuracy.
The LP2989 is offered in SO‑8, Mini SO‑8, and 8‑Lead LLP packages.