LM385LP-1-2

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Power Management Integrated Circuit (PMIC) is a family of devices that are used in various applications to convert energy into electricity, regulate and regulate it, and make the entire system operate efficiently and in a reliable manner. Voltage references play a key role in the effective and reliable operation of PMICs.

One of the most widely used voltage references is the LM385LP-1-2. This device is designed to provide accurate and stable reference voltage outputs over a wide temperature range. It also offers improved stability and accuracy compared to its predecessors, allowing it to be used in a variety of applications.

The reference output can be obtained with a supply voltage between 2.7V and 5.5V, providing a convenient reference voltage source. Its design offers improved accuracy and dynamic load regulation, making it ideal for a variety of applications such as:

• Temperature sensing
• Battery monitoring
• Precision current regulation
• Level shifting
• System calibration

The LM385LP-1-2 is a low power, low cost voltage reference with a typical output accuracy of +2 to -2 mV. Its maximum temperature operating range is from -55°C to 125°C, and a maximum supply current of 4μA. Furthermore, the device offers improved power supply rejection ratio (PSRR) and input bias current (Ib) compared to other voltage references.

Its working principle is based on a bandgap reference that produces a precise reference voltage across the device’s output terminals. The device works by producing a fixed voltage across its external resistor using the internal bandgap reference circuit. This voltage is then buffered by an amplifier and regulated by an external resistor and a current-limit circuit.

The output voltage is calibrated using an integrated metal-oxide-semiconductor (MOS) FET, providing a precise, low power, and low noise reference voltage source. The reference voltage is then regulated by an external resistor and a current-limit circuit.

In summary, the LM385LP-1-2 is an ideal low cost, low power voltage reference, able to deliver stable, precise and highly accurate reference voltage across a wide temperature range. It has improved dynamic and power supply regulation for precise voltage regulation in a variety of applications.

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