KA78L18AZTA

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

KA78L18AZTA is a positive voltage regulator from the PMIC voltage regulators category under the linear regulator. It is designed to provide 1.8V with a maximum current of 1A from the input 5V power source. This miniature 3-pin SOT-89 package device is suitable for many 1.8V low voltage applications, such as DSPs, microprocessors, and FPGAs.

Working Principle

The linear voltage regulator is a type of three-terminal device that provides a constant output voltage when sourcing or sinking a load. KA78L18AZTA voltage regulator is specifically designed with an internally fixed 1.8V output voltage. It is a positive type of regulator, meaning that the output voltage is always positive relative to the ground terminal. This device is an adjustable type of linear regulator, meaning that by adding a resistor divider to the output pin, we can adjust the output voltage to a value other than 1.8V.

Internally this device employs a series pass regulator, which works as an adjustable current source. This is achieved by a shunt regulator - a voltage-controlled voltage source (VVCS). The chip also includes an internal current limiter, which reduces its power dissipation.

The output voltage is maintained highly constant over load and temperature variations due to its design. This voltage regulator implements in-built over-temperature protection and over-current protection. The chip also offers short-circuit protection, which turns off the device when the output is shorted to ground.

Typical Applications

KA78L18AZTA voltage regulator has many applications where a 1.8V output voltage is required. It is mostly used in digital systems such as microprocessors, DSPs, and FPGAs. It is also used in power management ICs, mobile phone chargers and battery circuits. This device can also be used to generate +1.8V for low noise audio pre-amplifiers.

This voltage regulator also finds its application in computer systems such as memory circuit, internal clocks, and power supplies. It is also used in audio amplifiers and motor drivers to provide the required 1.8V rail. It is also used in consumer and portable electronic devices such as MP3 players, digital cameras and watches.

Features

• Internally Fixed Output voltage
• Adjustable output voltage
• Input voltage range of 5V
• Maximum output current of 1A
• Short-circuit protection
• Highly regulated output voltage
• Over-temperature and over-current protection

The specific data is subject to PDF, and the above content is for reference