Micrel Expands ULDO Linear Regulator Family for Automotive Environments

frozenviolet

Micrel Expands ULDO Linear Regulator Family for Automotive Environments [Copy link]

Micrel (Micrel, USA) recently announced the launch of new miniature dual ultra-low dropout (ULDO) linear regulators. The MIC5320 and MIC5321 are part of the new dual low-dropout linear regulators, providing 35mV@150mA ultra-low dropout, power supply ripple suppression performance of 73bd, and low output noise, all in a very small form factor. These parts are supplied in one of the smallest packages in the industry - 1.6mmx1.6mm 6-pin MLF package , suitable for today's portable product applications, including mobile phone RF power supplies, camera modules, image sensors for digital cameras and digital video cameras, PDAs, PMPs, and PC cameras.

Mindray's new MIC5321 is targeted at applications that require high power supply ripple rejection as it provides a bypass pin for additional noise filtering. This feature, combined with low voltage drop, brings many benefits to applications that require high power supply ripple rejection at low input to output voltages.

For general use or digital applications requiring power supply ripple rejection performance exceeding 60db, the company introduced the MIC5320. This device eliminates the need for bypass capacitors and provides two startup pins for applications requiring orderly startup. These integrated circuits provide the industry's lowest voltage drop for 150mA dual low-dropout linear regulators, which can extend battery life when using lithium batteries to power portable applications.

MIC5320 and MIC5321 integrate two high-performance low-dropout linear regulators with good transient performance and only require small, inexpensive 1uF ceramic capacitors. These two devices have low quiescent current, fast turn-on time (only 30us), current limiting and thermal shutdown protection, and can operate between -40℃ and 125℃.

The MIC5320 and MIC5321 are available in volume now, with pricing starting at $0.64 in 1,000-unit quantities. Additional integrated circuits are planned to be introduced later this year.