LT1963ET-1.8#PBF

LT1963ET-1.8#PBF is a high-performance, low-noise, low-dropout, CMOS linear voltage regulator. It is classified into PMIC – Voltage Regulators – Linear and is featured with a built-in sense resistor, making it suitable for large output current SPM/LCD applications. Its ultra small dimensions allow integration within microprocessors. Also, its wide input voltage range of 1.8V to 5.5V and output voltage of 1.8V ensures compatibility with many systems.

Features

• Wide Input Voltage Range from 1.8V to 5.5V.
• Stable output 1.8V with load current up to 1A.
• Low dropout voltage: 0.2V at 1A, 0.3V at 0.5A.
• Low quiescent current: 20 μA.
• Integrated voltage sense resistor.
• Thermal overload protection.
• Output current limiting protection.

Application

The LT1963ET-1.8#PBF is widely used in applications with large output current, such as power management systems, LCD backlights and processor cores. It can also be used in applications requiring an adjustable output voltage, such as automotive applications, battery-powered systems and lithium-ion/polymer battery charger.

Working Principle

The LT1963ET-1.8#PBF operating principle is based on a traditional linear voltage regulation circuit. It consists of two major parts, which are the actual voltage regulator and the sense resistor. The sense resistor works in combination with the reference of the regulator, allowing a regulator to automatically compensate for the voltage drop across the coil of the device and to maintain a constant and stable output voltage, even when the load current is varied. The internal control loop of the device ensures that an adequate compensation current is provided, while maintaining a low noise output.

Conclusion

The LT1963ET-1.8#PBF linear voltage regulator is a low-noise, low-dropout, CMOS integrated circuit. It is classified into PMIC – Voltage Regulators – Linear and is capable to deliver stable and adjustable output voltage at current up to 1A. With its wide input voltage range, integrated sense resistor, and low quiescent current, this linear regulator is suitable for many systems and applications.