L4995J

PMIC - Voltage Regulators - Linear

Voltage regulation is a broad field that includes a variety of devices used to control the voltage of a system. Linear voltage regulators are a type of voltage regulator that utilizes a variable element to control the output voltage. The L4995J is a low-dropout regulator (LDO) that is designed specifically for automotive applications. It offers excellent accuracy, high output voltage accuracy, wide input voltage range and a wide temperature range. The device is designed to maintain a regulated output voltage of 3.1 volts with a voltage range of 3.0-18V.

The L4995J is a three-terminal, low-output voltage linear regulator. It is designed to deliver an output voltage that is stable, accurate, and free from noise, common to switching regulators. It has an internal reference voltage and error amplification, which are the core components that allow it to adjust the output voltage using linear regulation. The device also includes internal protection from over-voltage conditions and current-limit protection.

The L4995J operates in the same manner as other linear regulators, with the primary difference being that it uses a negative temperature coefficient (NTC). This works similarly to the NTC thermistors used to regulate refrigerator temperatures. As temperatures rise, the NTC causes the output voltage of the regulator to decrease.

The device also utilizes an over-voltage safety feature which is designed to protect against over-voltage conditions. This is accomplished by monitoring the output voltage with an internal OVP control. When an over-voltage condition is detected, the device will trip and shut down the internal circuitry, preventing further damage to the system.

The device is available in a 0.6mm 3x2mm QFN-56 (Quad Flat Non-Leaded) package, making it suitable for use in tight spaces. The device is also available in a wide temperature range (-40°C to +125°C) making it ideal for automotive applications. The device can take up to 18V of input voltage, making it useful for applications that require a higher voltage than what standard 3.3V or 5V regulators offer.

The L4995J can be used in a variety of automotive applications, such as in power supplies, sensors, fuel gauges, and electrical engine control systems. Additionally, it is also suitable for industrial applications that require an accurate, reliable source of regulated power. In any environment, its rugged construction ensures a long product life.

In summary, the L4995J is a low-dropout linear regulator that is designed for automotive applications. It features excellent accuracy, wide input voltage range, wide temperature range and a variety of protection features. Its small size and flexibility make it ideal for a variety of automotive and industrial applications.