The ADP3333 is a member of the ADP333x family of precision low dropout (LDO) anyCAP® voltage regulators.
The ADP3333 Rev. B is a precision low‑dropout (LDO) regulator offering high accuracy (±0.8% at 25 °C) and low noise in an ultrasmall 8‑lead MSOP package. It operates from 2.6 V to 12 V supply voltage, delivers up to 300 mA load current, and requires only a 1.0 µF output capacitor for stability, making it suitable for space‑constrained applications such as cellular phones and PDAs.
The datasheet provides detailed specifications, absolute maximum ratings, pin descriptions, typical performance curves, theory of operation, and design guidance including capacitor selection, thermal overload protection, shutdown mode, PCB layout recommendations, outline dimensions and ordering information.
| Line Regulation | 0.04 mV/V |
|---|---|
| Load Regulation | 0.04 mV/mA |
| Dropout Voltage (300 mA, typical) | 140 mV |
| Output Noise (10 Hz‑100 kHz, 10 µF, 300 mA) | 45 µV rms |
| Shutdown Current (typical) | < 1 µA |
| Supply Voltage Range | 2.6 V to 12 V |
| Operating Ambient Temperature Range | −40 °C to +85 °C |
| Package | 8‑Lead MSOP |
The device delivers up to 300 mA continuous load current, with a short‑circuit limit of about 1 A.
Only a 1.0 µF output capacitor is needed, and any type (including MLCC) is supported.
In shutdown mode the quiescent current is reduced to less than 1 µA.
The typical dropout voltage is 140 mV at a load of 300 mA.