Toshiba's TCR3DM Series CMOS LDO Voltage Regulators are general-purpose single-output voltage regulators with an on/off control input, featuring low dropout voltage, low output noise voltage and low inrush current. These voltage regulators are available in fixed output voltages between 1.0V and 4.5V and capable of driving up to 300mA. They feature over-current protection, over-temperature protection, Inrush current protection circuit and Auto-discharge function. The TCR3DM series are offered in the ultra small plastic mold package DFN4 (1.0mm x 1.0mm; t 0.58mm). It has a low dropout voltage of 210mV (2.5V output, IOUT = 300mA) with low output noise voltage of 38μVrms (2.5V output) and a load transient response of only ⊿VOUT = ±80 mV ( IOUT = 1 mA⇔300mA, COUT =1.0μF). As small ceramic input and output capacitors can be used with the TCR3DM series, these devices are ideal for portable applications that require high-density board assembly such as cellular phones.