The XC6225 series is a high accuracy, low noise, and low dropout CMOS LDO regulator. The series includes a reference voltage source, an error amplifier, a driver transistor, a current limiter, and a phase compensation circuit. The CE function enables the entire circuit to be turned off by a low level input signal to the CE pin. In this stand-by state, the XC6225B series can discharge the electric charge stored at the output capacitor through the internal auto-discharge switch, and as a result the VOUT pin quickly returns to the VSS level. The output stabilization capacitor (CL) is also compatible with low ESR ceramic capacitors. Output voltage is selectable in 0.05V increments within a range of 0.8V~5.0V. The current limit fold-back circuit works as a short circuit protection as well as the output current limiter. The series achieves a fast response with only 25μA of low power consumption. The current limit is set to 50mA (TYP.) so that the device is optimized to protect the circuit from over-current. It is ideally suited for applications requiring 30 mA or less. A small USP-4 package makes high density mounting possible.
The XC6225 Series LDO regulator from Torex provides a high‑accuracy, low‑noise solution for portable electronics such as cellular phones, cameras, and PDAs. It features a reference voltage source, error amplifier, driver transistor, current limiter, and phase‑compensation circuit, with a CE pin that can shut down the entire circuit.
The device is offered in USP‑4, SOT‑25, and SSOT‑24 packages and supports output voltages from 0.8 V to 5.0 V in 0.05 V steps. It delivers up to 30 mA typical output current (50 mA limit) with a dropout voltage of 70 mV at 30 mA, and consumes only 25 µA standby current.
| Output Current | 30 mA (typical) < 50 mA limit |
|---|---|
| Dropout Voltage | 70 mV @ IOUT=30 mA, VOUT=3.2 V |
| Operating Voltage Range | 2.5 V ~ 6.0 V (for 0.8 V~5.0 V output range) |
| Output Voltage Range | 0.8 V ~ 5.0 V selectable in 0.05 V steps |
| Stand‑by Current | 25 µA typ. |
| Package Options | USP‑4, SOT‑25, SSOT‑24 (under development) |
| Ripple Rejection | 70 dB @ 1 kHz |
The device provides a typical output current of 30 mA and a limit of 50 mA.
The CE pin can be driven low to shut down the entire circuit, and the XC6225B version also discharges the output capacitor automatically.
It is offered in USP‑4, SOT‑25, and SSOT‑24 (the latter under development).