LT1521CST-5#TRPBF

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

LT1521CST-5#TRPBF current source/voltage regulator is a cost-effective member of Texas Instrument\'s linear voltage regulator family. It is a low dropout (LDO) regulated output converter which provides superior regulation accuracy through the patented automatic trimming technique, while consuming an ultra-low quiescent current. This regulator is designed to supply voltage and current to analog, digital and power management integrated circuits. It is used in high volume consumer and computing products due to its excellent overall performance and superior stability.

TheLT1521CST-5#TRPBF current source/voltage regulator operates from an input voltage supply between 3V and 30V. Its output current can be adjusted from 0.45mA up to 1.25A and its output voltage can be adjusted from 2.5V to 5.5V. It has a typical drop-out voltage of 67mV at 1.25A load current. The LT1521CST-5#TRPBF features a 0.3% initial accuracy and provides a highly stable output voltage over a wide input voltage and temperature range.

The LT1521CST-5#TRPBF is designed to operate in ultra-low quiescent current mode and has a current starvation operation. It uses an internal 0.8V/1.0V/1.2V reference voltage to achieve a high accuracy of ±0.2%. It also has a built-in low dropout current source (50uA). The output voltage accuracy is further enhanced by the patented automatic trimming circuit, which uses a special current source trim control. The 3-pin shunt resistor and external Zener diode provide additional protections to the device from over-current or over-voltage.

The LT1521CST-5#TRPBF is used in many applications such as DC-DC converters, computer motherboards, power supplies, battery-powered electronic devices, router systems, and vehicle electronics. In each of these applications, it supplies the device with a clean, stable power source with low ripple, noise and voltage dropouts. Its low dropout voltage and high accuracy also make it suitable for systems that need extra current at low output voltage drops.

The basic operating principles of the LT1521CST-5#TRPBF is it consists of a bandgap voltage reference and an error amplifier connected externally through a feedback loop. The external bandgap reference sets the voltage of an external shunt resistor as well as a capacitor-divided voltage divider. This voltage divider sets a reference voltage to the error amplifier. When the feedback voltage is higher than the reference voltage, the amplifier reduces the error by driving down the output voltage at the loop gain (i.e. output voltage controlled by the drive current of the feedback error amplifier). If the feedback voltage is higher than the reference voltage, the output voltage of the regulator will be decreased accordingly.

TheLT1521CST-5#TRPBF also includes a current heat sink, which helps to reduce output resistance and maximize current load capability. In some cases, this heat sink can also be replaced by an external current limiting resistor. The LT1521CST-5#TRPBF regulator can also be used with switching regulators to enable them to operate with low-input voltage, current drawn from the input supply, and enable them to maintain a linear output voltage over a wide range of temperatures and application environments.

In summary, the LT1521CST-5#TRPBF is a versatile current source/voltage regulator that is used in many applications including DC-DC converters, computer motherboards, power supplies, battery-powered devices, router systems, and vehicle electronics. Its patented autotrimming circuit, low dropout stars and high accuracy make it a preferred choice in those applications. Its low quiescent current mode, current starvation, and current limitation capabilities make it a preferred choice when running at a low input voltage, or when supplying and controlling current in high frequency applications.

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