LP2985IBL-1.8

LP2985IBL-1.8 is a linear voltage regulator designed for low-dropout low quiescent current applications. It is a power management integrated circuit (PMIC) with a voltage output range from 1.5 V to 7 V and a maximum output current of 300 mA. It has high precision, low ESR and high PSRR, ensuring stable voltage and current supply. This feature makes it suitable for various low power products where power consumption and low-noise performance are critical.

Application Field

LP2985IBL-1.8 is widely used in many applications such as portable electronics, networking equipment, security systems, audio systems, and automotive use. Its low dropout voltage and low quiescent current make it suitable for various applications. For example, it can be used to power LED drivers, battery-powered applications, low power LAN chips, smoke detectors, and non-isolated DC-DC converters. It is also used in medical equipment, industrial automation, automotive systems and consumer devices.

Working Principle

LP2985IBL-1.8 works by regulating input voltage to the output voltage level of 1.5 V to 7 V. It consists of a reference voltage, an error amplifier, a voltage regulator and a low dropout (LDO) current regulator. The reference voltage sets the output voltage in the required range. The error amplifier detects the difference between the output voltage and the reference voltage and provides an error signal. The voltage regulator controls the amount of current entering the LDO current regulator based on the error signal. The LDO current regulator then regulates the voltage to the needed output voltage level.

The LP2985IBL-1.8 is an advanced device that has various features such as thermal protection and reverse current protection. It also has enable/disable feature and a programmable current limit. The enable/disable feature allows the user to completely shut down the device when it is not in use, reducing power consumption. The programmable current limit allows users to set the current limit for the regulator. This feature prevents excessive current and helps to protect the system from over-current conditions.

LP2985IBL-1.8 is a robust and reliable PMIC that delivers high precision output voltage, allowing for efficient and reliable operation. It requires minimal external components, which significantly reduces the design cycle time for applications where board size is a major concern. Its low power consumption, low ESR, and high PSRR make it suitable for a wide range of applications.