The product is a 1A bipolar transistor LDO voltage regulator with fixed output voltages of 1.8V, 2.5V, 3.3V and 5.0V, and adjustable output voltages for the XB1117K series by external resistors.
The XB1117 series from Torex provides 1 A bipolar LDO regulators with fixed output voltages of 1.8 V, 2.5 V, 3.3 V and 5.0 V, and an adjustable version (XB1117K) set by external resistors. The devices feature low dropout (≈1.2 V typical), over‑current and thermal protection, and are supplied in a RoHS‑compliant SOT‑223 package.
Typical applications include efficient linear regulation, DC‑DC conversion, battery charging, and local power supplies for equipment and battery‑powered devices. The datasheet includes pin configurations, absolute maximum ratings, electrical characteristics, and recommended application circuits.
| Typical Dropout Voltage | 1.2 V (typ.) |
|---|---|
| Output Voltage Accuracy (adjustable) | 0.04 % (typ.) |
| Adjust Pin Current | < 120 µA (typ.) |
| Package | SOT‑223 |
Typical dropout voltage is about 1.2 V at 1 A load.
They are supplied in an SOT‑223 surface‑mount package.