LM385BDG4-1-2

The LM385BDG4-1-2 voltage reference is a family of 1.2 V to 5 V voltage references designed to operate with a maximum output current of 0.25 mA. It belongs to PMIC - Voltage Reference which is a backup power supply used mainly for systems that need long time stable power maintenance. They are found in applications such as automotive, telecom communications, portable electronic devices and household appliances.

The main feature of LM385BDG4-1-2 is its small size which makes it the ideal choice for space-sensitive applications. It requires only one external capacitor to provide stable output voltage and has good load and line regulation. The internal circuit has a temperature compensating circuit and an over-temperature alarm/shutdown circuit to guarantee over temperature protection.

The working principle of LM385BDG4-1-2 is based on two main components, a voltage reference and an amplifier. There is a Zener diode with a specified breakdown voltage inside the voltage reference, and a circuit connected to an adjustable sink loaded on the amplifier allows the output voltage to be adjusted. The amplifier will adjust the output voltage to match the reference. Once the circuit is in balance, a stabilized output voltage is obtained.

The LM385BDG4-1-2 voltage reference is most suitable for use in applications needing low voltage, high accuracy, and overload/over temperature protection. The low power consumption and wide range of operating temperatures make it a good choice for low noise circuitry and battery operated applications. Its adjustable output voltage, along with its small size, makes it a great fit for space-sensitive equipment. Finally, its low output impedance makes it an ideal choice for systems needing a stable voltage under varying temperature or noise conditions.

In summary, the LM385BDG4-1-2 voltage reference is a low voltage, high accuracy voltage reference designed for space-sensitive applications. Its small size makes it ideal for mobile devices, automotive applications, telecom communications, and other applications that require low power consumption and reliable operation in a variety of environmental conditions. It requires only one external capacitor to provide stable output voltage, with good load and line regulation, over temperature protection, and low output impedance. The LM385BDG4-1-2 voltage reference is an ideal choice for systems needing a stable voltage under varying temperature or noise conditions.