Toshiba Electronics Europe has a family of 200mA low drop out (LDO) voltage regulators in wafer-level chip scale (WCSP) packages measuring 0.79mm x 0.79mm x 0.5mm.

Capable of driving up to 200mA, the new LDO families offer fixed voltage outputs ranging from 1.2V to 3.6V with output voltage levels provided in 100mV intervals. The regulators are single output devices and exhibit typical dropout voltages of only 90mV at 2.5V output voltage.

The devices incorporate overcurrent protection and are equipped with an on/off control function to minimise total system power consumption.

The TCR4SxxDWBG family also features an auto discharge function for rapid discharge of the LDO when switched off using the control voltage

Designed for low power operation, devices in the new LDO families have low typical quiescent bias currents of 45µA, while typical standby currents are down to just 1µA. Typical power supply ripple rejection ratio is a high 80dB (IOUT = 10mA, f = 1kHz), while output noise voltage is rated at only 30µVrms.
 
For more information, see http://www.toshiba-components.com