Power

CMOS LDOs meet battery operated device requirements

11th February 2015
Nat Bowers
0

Suited for use in smartphones, tablet PCs and other portable, battery operated devices that require low power consumption, high performance and minimum PCB space, the TCR3DM family of ultra-miniature CMOS LDOs has been introduced by Toshiba Electronics Europe. The regulators offer an output voltage range of 1.0-4.5V with the possibility to specify the fixed output voltage in steps of 50mV.

Offering a typical output noise voltage of just 38μVrms (at 2.5V and 10mA outputs), the LDOs provide a typical high ripple rejection of 70dB. An 80mV load transient response for output current changes between 1 and 300mA further contributes to the devices' performance.

Despite the small 1.0x1.0x0.58mm DFN4 package, the series offers typical drop out voltages of just 210mV (at 2.5V and 300mA outputs). Integrated features include inrush current protection, overcurrent protection, thermal shutdown protection and a built in output auto-discharge function, all enabling optimised system performance with respect to noise and battery lifetime, as well as a reduced demand for external components.

This 300mA regulator is also available as the TCR3DF family in a general purpose SOT-25 package that makes it suitable for standard industrial and consumer applications.

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