YB1231 is a series of ultra-low-noise, low dropout (LDO) linear regulators with 2.0% output voltage accuracy
The YB1231 is an ultra‑low‑noise, low‑dropout linear regulator designed for hand‑held and portable devices. It offers 2 % output voltage accuracy, a typical 600 mA output current, and can operate with only a 2.2 µF ceramic capacitor on the input and output.
It is supplied in SOT‑23, SOT‑25 and SOT‑89 packages and includes features such as thermal shutdown, short‑circuit protection, soft‑start circuitry and a sub‑picoamp shutdown mode. Typical applications include PDAs, notebook computers, camera modules, USB‑based portable devices and wireless LAN modules.
| Typical Output Current | 600 mA |
|---|---|
| Dropout Voltage (4.5 V output, 600 mA) | 440 mV |
| Shutdown Supply Current | < 1 pA |
| Output Voltage Accuracy | ±2.0 % |
| Output Voltage Range | 3.2 V ~ 4.5 V |
| Thermal Shutdown Temperature | 160 °C |
| Package Types | SOT‑23, SOT‑25, SOT‑89 |
The YB1231 can supply up to 600 mA of output current.
The dropout voltage is 440 mV under those conditions.
In shutdown mode the device consumes less than 1 pA.
It is offered in SOT‑23, SOT‑25 and SOT‑89 packages.