ZSR300N8TA Integrated Circuits (ICs)

Linear voltage regulators are a type of DC-DC regulator that functions by controlling output voltage so that mains input power is converted into a regulated output voltage. The ZSR300N8TA is a high-performance & cost-effective monolithic linear voltage regulator series and is the optimal choice for applications requiring low quiescent current, low ultra-low drop-out voltage, high efficiency and high power output.

Features of ZSR300N8TA include:

• Low Quiescent Current: Low quiescent current (<500μA) reduces consumption, allowing for longer battery life.
• Low Output Voltage Drop: The low output voltage drop of ZSR300N8TA maximizes efficiency and provides stable voltage regulation even at light loads.
• Output Current: ZSR300N8TA delivers up to 6A of continuous current with a built-in thermal protection function.
• High Accuracy: Low output voltage ripple and output voltage accuracy of ±1% enables designers to integrate a regulator into applications requiring high accuracy output voltage.
• Low EMI: Pin to pin stackable LDO allows designers to reduce inductive components, while still maintaining board level EMI compliance.
• Wide Operating Alarm Voltage Range: Ultra-wide input voltage range of 2.5V to 15V supports a wide variety of applications.

Applications

ZSR300N8TA is applicable for a wide range of applications, including mobile phones and tablets, VR/AR devices, gaming consoles, smartphones, cameras, and IoT edge nodes. It is suitable as a single linear power supply for professional digital imaging, audio impedance output, medical test and measurement, industrial controls, and various other applications.

Working Principle

The ZSR300N8TA voltage regulator has an internal voltage reference that provides a stable output voltage. It regulates an input voltage down to a chosen value through an unsaturated pass transistor. When the load current is increased, the base current to the pass transistor increases and limits the output voltage. The voltage regulator acts in a non-linear fashion and does not cause excessive loading on the power supply.

The output voltage is regulated by a voltage reference terminal when the output voltage is adjusted to a desired voltage level. The output voltage of the ZSR300N8TA is further stabilized with a built-in V-FET transistor, which functions like a voltage-controlled resistance to providing greater output stability even under heavy load conditions. The result is consistent and accurate output voltage regulation.