Vishay Intertechnology, Inc. Voltage Regulators - Linear SI91871DMP-12-E3

The SI91871DMP-12-E3 is a 300-mA low-dropout (LDO) linear voltage regulator designed for low voltage and low power applications. It features an ultra-low dropout voltage of 300 mV at a 300-mA load, making it suitable for battery-operated devices. The regulator provides an output voltage accuracy of 1.5% and can handle peak output currents of up to 400 mA. It operates with a ground current of only 130 ¬µA at full load, enhancing its efficiency in portable electronics. This device is characterized by its low output noise of 30 ¬µVRMS across a frequency range of 10 Hz to 100 kHz, which is beneficial for noise-sensitive applications such as RF systems. The SI91871 includes built-in protection features such as thermal shutdown, short circuit protection, and reverse battery protection, ensuring reliable operation in various conditions. It also supports fast start-up times of 50 ¬µs and quick transient response times of approximately 30 ¬µs. The regulator is available in a compact MLP33-5 package and is specified to operate over an industrial temperature range of -40¬8C to 85¬8C. It is compatible with low ESR ceramic capacitors, which are recommended for optimal performance. The device also includes a shutdown control feature and an auto-discharge option for the output voltage when in shutdown mode.