MIC3775-1.8YMM

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PMIC - Voltage Regulators - Linear

MIC3775-1.8YMM is a low power, 1A low dropout, linear voltage regulator designed to provide easy point-of-load, bias voltage regulation in a wide range of applications. It offers a fast transient response and a high PSRR, making it a great regulator for external power supplies. It also offers a wide input voltage range, wide operating temperature range and low external component count. It also features a slew rate limit feature, which provides a low-ripple alternative to a traditional 1.2V LDO.

This device is widely used in many application fields such as cellular phone, radio communication, portable equipment, audio applications, and automotive electronics. The combination of a low Iq and small package size makes it especially suitable for space limited applications.

Working principle

The MIC3775-1.8YMM is a three-terminal, low dropout regulator designed to provide 1A and adjustable output voltage between 1.2V and 5.5V. It offers fast transient response and high ripple rejection, thanks to its wide bandwidth of nearly 500KHz. The device also features a programmable Slew Rate Limit (SRL) feature, allowing users to reduce output voltage ripple with a slow ramp-up time. The SRL feature provides a low-ripple alternative for design engineers.

This low-dropout regulator operates with an input voltage of 2V to 21V and provides a 1A output current at a dropout of 0.2V (typical). The device has a selected on-resistance of 29 mOhm and a low power operating quiescent current of only 10 μA, which makes it particularly suitable for battery-operated systems.

This device also has built-in over-current and short circuit protection, which prevents the device from being damaged if an over-current occurs. In addition, the output voltage is protected against over-voltage and reverse-battery conditions.

Conclusion

To sum up, the MIC3775-1.8YMM voltage regulator is a compact and efficient low-dropout linear regulator with low power quiescent current and wide bandwidth, making it suitable for a wide range of applications. It provides excellent output voltage accuracy, fast transient response and high PSRR, as well as over-current and over-voltage protection.

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