Power Electronics / Power Management


LDO voltage regulator targets small form-factor applications

13 March 2002 Power Electronics / Power Management

California Micro Devices has launched its Power Wise Regulator (PWR) family of CMOS Low Dropout (LDO) voltage regulators with the introduction of its first chip solution, the CMPWR163-33. Specifying a low output load current (150 mA) as it converts 5,0 V to 3,3 V, the initial entry delivers optimal voltage regulation for small form-factor and battery-operated products, including wireless handsets, CompactFlash cards, PDAs, PC (PCMCIA) cards and SmartMedia cards.

The CMPWR163-33 operates in two power-saving modes for mobile/wireless applications. In the full-operation mode, the LDO regulator is designed to operate with very low current, which helps to conserve battery power. In the shutdown mode, the LDO regulator's supply current drops virtually to zero, further extending battery life. New additions to the PWR family are expected to offer input voltages ranging from 2,5 V to 5,0 V along with a variety of single output voltage options.

To meet the small form-factor requirements in mobile products, the CMPWR163-33 comes packaged in miniature 8-pin MSOP and 5-pin SOT23 packages to conserve circuit board space. While the MSOP package serves low-profile applications such as CompactFlash and PC cards, the SOT23 format is designed for small circuit boards destined for PDA designs.



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