LM285Z-2.5G

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Voltage reference is an important part of the power management IC (PMIC) due to its critical role in precision control of the power supply circuit. LM285Z-2.5G is one of the widely used voltage references in the PMIC industry. In this article, we will discuss the application field and working principle of LM285Z-2.5G.

LM285Z-2.5G is a two-terminal voltage reference with a 0.2V to 2.5V operating range. It features low noise, low drift, low power consumption and wide temperature range operation (-25℃ to 85℃). The device is offered in a small form factor PLCC2 surface-mount package that can easily fit space-constrained designs. Due to its reliability and stability, LM285Z-2.5G is often used in portable devices and high-precision cryptographic systems.

LM285Z-2.5G is designed to provide a stable, low temperature coefficient output voltage that is independent of operating temperature and current levels. It has an accuracy of typically ±2.5mV, allowing it to be used in low-voltage power supplies and precision control circuits. It also features short-circuit and thermal protection, making it ideal for use in systems with limited power supply circuitry.

The working principle of LM285Z-2.5G is based on the Zener diode. It consists of a Zener diode connected to a resistive divider circuit. The Zener diode creates a voltage clamp path that limits the output voltage to a predetermined level. The resistive divider will then subtract the desired reference voltage from the output voltage, resulting in a stable and accurate output voltage of ±2.5mV.

In addition to being used in precision control circuits, LM285Z-2.5G also finds application in other areas such as battery chargers, temperature sensors, and automatic power supply cut-off. It can also be used as an offset voltage source in sensing circuits and data converters. It can even be used to regulate power consumption in low-voltage circuits.

In conclusion, LM285Z-2.5G is a two-terminal voltage reference with a 0.2V to 2.5V operating range. It features low noise, low drift, low power consumption and wide temperature range operation. It is often used in portable devices and high-precision cryptographic systems. The working principle of LM285Z-2.5G is based on the Zener diode, with a resistive divider circuit to subtract the desired reference voltage from the output voltage. It can also be used for other applications such as battery chargers, temperature sensors, data converters, and automatic power supply cut-off.

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