The FS8855 is a low-dropout linear regulator that operates in the input voltage range from +2.5V to +9.0V and delivers 500mA output current. The high-accuracy output voltage is preset at an internally trimmed voltage of 2.5V or 3.3V. Other output voltages can be mask-optioned from 1.3V to 4.5V with 100mV increment, except for FS8855-29Cx, which has a 2.85V output voltage. The FS8855 consists of a 1.25V bandgap reference, an error amplifier, and a P-channel pass transistor. Other features include short-circuit protection and thermal shutdown protection. The FS8855 devices are available in TO-92, SOT-89, and SOT-223 packages.
The Fortune FS8855 is a 500 mA LDO linear regulator that operates from a 2.5 V to 9.0 V input range. It offers preset 2.5 V and 3.3 V outputs, with mask‑optioned voltages from 1.3 V to 4.5 V in 100 mV steps.
The device includes a 1.25 V band‑gap reference, error amplifier, P‑channel pass transistor, short‑circuit protection and thermal‑shutdown protection, and is offered in TO‑92, SOT‑89 and SOT‑223 packages.
| Input voltage range | 2.5 V to 9.0 V |
|---|---|
| Output current | 500 mA |
| Typical dropout voltage at 500 mA | 650 mV |
| Output voltage accuracy | ±35 mV |
| Package types | TO‑92, SOT‑89, SOT‑223 |
| Maximum input voltage (absolute max) | 10 V |
| Output current limit (absolute max) | 0.8 A |
| Thermal shutdown temperature | 155 °C |
| Junction temperature rating | +155 °C |
| Storage temperature range | -55 °C to +150 °C |
The typical dropout voltage is 650 mV at 500 mA load.
The FS8855 is offered in TO‑92, SOT‑89 and SOT‑223 packages.
The absolute maximum input voltage is 10 V.