UCC284DPTR-5

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UCC284DPTR-5 is a three-terminal low dropout linear regulator that provides low-voltage power supply solutions for a wide variety of applications. The UCC284DPTR-5 is designed to minimize the number of external components and provide excellent transient response to small output changes. The linear regulator is ideal for providing stable, isolated, low-voltage output while consuming minimal input voltage.

Application Field

The UCC284DPTR-5 is typically used in applications requiring a low-noise, low-dropout voltage regulator with a wide input voltage range. The differential input voltage is designed to effectively isolate the noise generated by the external load. The device is ideal for various battery operated equipment applications and other applications requiring a low-power output, such as low-power audio equipment, portable/automotive/industrial electronics, LED drivers, and security systems.

Working Principle

UCC284DPTR-5 is a three-terminal linear regulator having a positive input voltage and a negative output voltage. The linear regulator operates in a similar fashion to the popular LM78xx series, with the voltage regulation being accomplished by varying the pass transistor base-emitter voltage to stabilize the voltage across an internal feedback divider. A capacitor placed in parallel with the feedback divider helps to control the transient response of the device. An internal thermal shutdown protection circuit monitors the temperature of the internal power transistor and shuts it off if it gets too hot.

The output voltage is set by the combination of a resistor divider applied to the output terminal of the UCC284DPTR-5 and the equivalent impedance of the output capacitors. The voltage regulation achieved by this configuration is determined by the output impedance of the device. The UCC284DPTR-5 is designed to operate over a wide input range, so its voltage regulation characteristics are adjustable to suit a variety of applications.

The UCC284DPTR-5 offers a wide operating temperature range and low quiescent current drain making it an ideal choice for portable and automotive applications which demand longer battery life. The device also includes a power-on reset (POR) circuit which is used to initialize the device’s output and keep it from going out of regulation in the event of an input voltage dip.

In summary, the UCC284DPTR-5 is a robust, low dropout linear regulator which offers a wide input voltage range and improved transient response. With its wide temperature range, low quiescent current, and on-board reset circuit, it is ideally suited for battery operated applications such as portable and automotive electronics, LED drivers, and security systems.

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