The MAX8867/MAX8868 are low-noise, low-dropout linear regulators that operate from a 2.5V to 6.5V input and deliver up to 150mA. Typical output noise for these devices is just 30µVRMS, and typical dropout is only 165mV at 150mA. The output voltage is preset to voltages in the range of 2.5V to 5.0V, in 100mV increments. The MAX8867 and MAX8868 are pin-compatible with the MAX8863 and MAX8864, except for the BP pin. Designed with an internal P-channel MOSFET pass transistor, the MAX8867/MAX8868 maintain a low 100µA supply current, independent of the load current and dropout voltage. Other features include a 10nA logic-controlled shutdown mode, short-circuit and thermal-shutdown protection, and reverse battery protection. The MAX8868 also includes an auto-discharge function, which actively discharges the output voltage to ground when the device is placed in shutdown. Both devices come in regular and thin 5-pin SOT23 packages.
The MAX8867 and MAX8868 are low‑noise, low‑dropout linear regulators designed for battery‑powered applications. They operate from 2.5 V to 6.5 V input and provide preset output voltages from 2.5 V to 5.0 V in 100 mV steps, with a maximum load current of 150 mA.
Key features include 30 µV RMS output noise, a typical dropout of 55 mV at 50 mA (165 mV at 150 mA), 100 µA quiescent current, 10 nA shutdown supply current, short‑circuit and thermal‑overload protection, reverse‑battery protection, and an auto‑discharge function on the MAX8868 version.
| Input voltage range | 2.5 V to 6.5 V |
|---|---|
| Maximum output current | 150 mA |
| Dropout voltage (50 mA) | 55 mV |
| Quiescent (no‑load) supply current | 100 µA |
| Shutdown supply current | 10 nA |
| Operating temperature range | -40 °C to +85 °C |
| Package types | Regular 5‑pin SOT‑23, Thin 5‑pin SOT‑23 |
The shutdown mode draws only 10 nA of supply current.
Output voltages are preset from 2.5 V to 5.0 V in 100 mV increments.