Torex LDO ideal for space-conscious applications

The XC6503 series LDO from Torex Semiconductor integrates internal phase compensation circuitry, removing the need for output capacitors and reducing the necessary PCB layout area. Even with no capacitor, the XC6503 can deliver output currents up to 500mA and is available with fixed output voltages from 1.2V to 5.0V in 0.05V increments. It is said to offer fast transient response and high PSRR (55dB at 1kHz) while consuming 15uA in operation and less than 0.1uA in standby mode.

The voltage drop is also optimised to maximise battery life with only 300mV required at 500mA. The XC6503 is also safe, with integrated short-circuit protection, thermal shutdown and built-in current limiter. The LDO can also work with an output capacitor if required and includes an optional CL discharge function to immediately discharge of the output capacitor, ensuring that the Vout pin drops down to ground quickly should the XC6503 be turned off via the CE pin.

The small USP-4 package measures 1.2 x 1.6 x 0.6mm, making the XC6503 ideal for space-conscious applications. When additional power dissipation is required, larger SOT25, SOT89-5 or TO252 packages are also available.

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