Toshiba's TCR13AGADJ is a CMOS single-output voltage regulator with an ON / OFF control input, and featuring ultra-low dropout voltage, low in-rush current, and fast load transient response. This voltage regulator is available in output voltage adjustable type from 0.55 V to 3.6 V and is capable of driving up to 1.3 A. Other features include overcurrent protection, overtemperature protection, in-rush current protection circuit, undervoltage lockout function, and auto-discharge function. The TCR13AGADJ is offered in the ultra-small package WCSP6F [0.8 mm x 1.2 mm, t: 0.33 mm (maximum)]. As small ceramic input and output capacitors can be used with the TCR13AGADJ, this device is ideal for portable applications that require high-density board assembly such as cellular phones.

Click to see the LDO efficiency advantage over a DC-DC convertor