A8603KLPTR-T

A8603KLPTR-T Application Field and Working Principle

A8603KLPTR-T is a special type of voltage regulator produced by STMicroelectronics. It is in the PMIC (Power Management Integrated Circuit) grouping and it is categorized in the Voltage Regulators – Special Purpose sector. Its main application field is for battery-powered portable devices, where it can provided surge protection for batteries with its built-in low quiescent current.

Features

• Low quiescent current: 6µA maximum
• Operating voltage range from 2,4V to 5,5V
• Variable dropout voltage from Read to 2,5V at up to 10mA
• Three-state ENABLE control
• High output current up to 100mA

Working Principle

The working principle of A8603KLPTR-T is simple. When the ENABLE pin is low, the regulator is disabled; when it is high, the regulator is turned on and will start regulating the voltage. The voltage regulation is done by controlling the quiescent current of the circuit and varying the dropout voltage above the output voltage.

The quiescent current is kept at the minimum level (6µA maximum) to reduce the power consumption when the regulator is in standby mode. This is achieved by using a negative-feedback circuit with an externally adjustable low-current threshold current. When the output voltage deviates from the desired voltage, the quiescent current is adjusted so as to restore the voltage to the desired value.

Advantages

The A8603KLPTR-T offers many advantages over conventional voltage regulators. With its low quiescent current, it has the potential to dramatically reduce power consumption in battery-powered devices, thereby extending the battery life. Additionally, it can provide surge protection for battery packs due to its high current capability and variable dropout voltage feature. Finally, the three-state ENABLE control function allows for easy integration with microcontrollers and reduces the board space required for implementation.

Conclusion

The A8603KLPTR-T is a special type of voltage regulator designed for use in portable battery-powered devices. Its low quiescent current and variable dropout voltage make it an ideal choice for providing surge protection for battery packs, as well as minimizing power consumption while in standby mode. Additionally, its three-state ENABLE control and high current capability make it suitable for use with microcontrollers and small board sizes.