UCC284DP-ADJG4

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The Texas Instruments UCC284DP-ADJG4 is a PMIC – Voltage Regulators – Linear. It is a low dropout regulator (LDO) designed to provide reliable, low-voltage power to integrated circuits. The UCC284DP-ADJG4 is designed to be used in mission-critical applications such as process control & industrial automation, avionics, transportation, medical, and military. It has a wide input voltage range (2.7V to 6V) and is able to provide up to 500mA of output current.

The UCC284DP-ADJG4 is an adjustable linear regulator, meaning it can be set to a desired output voltage. This makes it ideal for applications that require a specific output voltage, such as powering a microcontroller or other sensitive electronics. It has a low voltage dropout of 0.4V typical at full load, making it energy efficient.

The UCC284DP-ADJG4 uses a dual-transistor topology for regulating the output voltage. The topology comprises two transistors, one operating in a linear mode and one in a series or shunt mode. In this arrangement, the shunt transistor is used to sense the output voltage. It is connected to an external resistive divider network. When the desired output voltage is reached, the shunt transistor turns off, allowing the linear transistor to remain on, thus regulating the output voltage.

The UCC284DP-ADJG4 also has a thermal protection feature to protect itself from overheating. This is done by connecting an internal temperature sensor to the junction between the shunt and linear transistors. When the junction temperature exceeds 130°C, the thermal protection feature is triggered and the output current is reduced, preventing the device from further overheating.

In addition, the UCC284DP-ADJG4 offers other features such as under-voltage lockout, current limiting and short-circuit protection. UVLO protects the device from low input voltage, while current limiting prevents over-current damage. Short-circuit protection occurs when the output is shorted and the device shuts down automatically to prevent damage.

The UCC284DP-ADJG4 is available in an 8-pin DIP package, making it easy to integrate into a system. In summary, the UCC284DP-ADJG4 is a versatile, low-dropout linear regulator designed to provide reliable, low-voltage power in mission-critical applications. With its wide input voltage range and adjustable output voltage, it is an ideal choice for powering sensitive, precise electronics.

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