TL2843BDR Integrated Circuits (ICs)

TL2843BDR Application Field and Working Principle

The TL2843BDR is a high performance integrated, low dropout (LDO) regulator specifically designed for power supply requirements in demanding, space-limited applications. It provides excellent noise, ripple and line regulation, as well as high efficiency in a variety of switching applications. In addition, the device is available in both fixed and adjustable voltage output versions, and provides up to 1.5A of current output with stable operation over a wide temperature range.

Application Field

The TL2843BDR is a highly efficient low dropout regulator, which can be used in a variety of applications such as standby power, desktop and notebook power, medical instrument power, automotive power, and consumer electronics power. The combination of its low cost and high performance makes the TL2843BDR a suitable choice for a variety of power supply requirements.

The device can be used in conjunction with switchmode power supplies to provide post-regulation for precision voltage sources, active reset systems, power supply sequencing and systems where high EMI capability is required. In addition to this, the device is specifically designed to have a very low dropout voltage for high performance applications.

Working Principle

The TL2843BDR works on the principle of a low dropout regulator, which is used to maintain a constant voltage output. The low dropout voltage of the device allows it to operate at very low input voltages, providing an economical and space-saving solution over the traditional LDO regulators. The TL2843BDR works by disengaging the output voltage when the input voltage drops below the specified dropout voltage. When this occurs, the internal error amplifier senses the voltage drop and reduces the drain-source voltage of the power MOSFET, thus delivering a low dropout regulated voltage at the output.

The TL2843BDR also includes a proprietary “low quiescent current mode” circuit, which reduces the typical dropout voltage to only 0.1V, and improves efficiency over the traditional LDO voltage regulators by up to 20%. This circuit works by sensing the current demands of the system and reducing the drain-source voltage of the MOSFET only when higher current needs are not present.

Conclusion

The TL2843BDR is a high performance, low dropout, high efficiency voltage regulator for a variety of applications. It is available in both fixed and adjustable voltage versions, and provides high efficiency and excellent noise, ripple, and line regulation. In addition, the use of the proprietary “low quiescent current mode” circuit reduces the typical dropout voltage to only 0.1V, making it an economical and space-saving solution.