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Home > 1.ANALOG, LDO > How to Apply Low-Dropout Regulators Successfully

How to Apply Low-Dropout Regulators Successfully

September 1, 2015 Leave a comment Go to comments

A low-dropout regulator (LDO) is capable of maintaining its specified output voltage over a wide range of load current and input voltage, down to a very small difference between input and output voltages. This difference, known as the dropout voltage or headroom requirement, can be as low as 80 mV at 2 A. The adjustable-output low-dropout regulator1 first came to public attention in 1977. Nowadays, portable devices often require up to 20 low-dropout linear regulators. Many of the LDOs in today’s portable devices are integrated into multifunction power-management ICs2 (PMICs)—highly integrated systems with 20 or more power domains for audio, battery charging, housekeeping, lighting, communications, and other functions.

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Categories: 1.ANALOG, LDO
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