The RT9161/A is a 300/500mA fixed output voltage low dropout linear regulator. Typical ground current is approximately 110μA, from zero to maximum loading conditions. Wide range of available output voltage fits most of applications. Built-in output current-limiting most thermal-limiting provide maximal protection against any fault conditions. For ease of application, the RT9161/A comes in the popular 3-pin SOT-23 (300mA), SOT-89 (300mA), SOT-223 (500mA), or TO-92 packages.
The RT9161/A is a 300 mA/500 mA fixed‑output low‑dropout linear regulator offered in SOT‑23, SOT‑89, SOT‑223, and TO‑92 packages. It features low ground current, internal current‑limiting, thermal protection, and a wide input voltage range up to 12 V.
Key specifications include dropout voltages as low as 200 mV at 100 mA, 450 mV at 300 mA and 750 mV at 500 mA, output‑voltage accuracy of ±2 %, and RoHS‑compliant, lead‑free construction. The datasheet also provides pin‑out diagrams, absolute maximum ratings, and recommended application circuits with stability guidelines.
| Output Voltage Options | 1.5 V, 1.6 V, 4.9 V, 5.0 V |
|---|---|
| Fixed Output Current | 300 mA / 500 mA |
| Dropout Voltage | 200 mV @100 mA, 450 mV @300 mA, 750 mV @500 mA |
| Input Voltage Range | Up to 12 V |
| Output Voltage Accuracy | ±2 % |
| Power Dissipation (SOT‑23‑3) | 0.4 W |
| Thermal Resistance (SOT‑23‑3) | 250 °C/W |
The device provides fixed output currents of 300 mA or 500 mA depending on the package.
It supports an input voltage range up to 12 V.
Yes, the RT9161/A is RoHS compliant and 100 % lead‑free.