L7824CD2T-TR Integrated Circuits (ICs)

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The L7824CD2T-TR is a three-terminal linear voltage regulator from STMicroelectronics. It is actively used in a variety of devices due to its reliability, cost-effectiveness, and simple design. This article covers the application field and working principle of the L7824CD2T-TR.

Application Field

The L7824CD2T-TR regulator is designed to provide a constant output voltage, typically set with two external resistors. It is well suited for many situations as its wide selection of output voltages ranges from 1.5 V to 28 V. It can be used to provide single- or dual-output VDD supply. It also features a low-power shutdown mode and has a built-in output voltage clamp.

It is commonly used in consumer applications such as household electronics, automotive systems, and industrial control systems. It is also commonly found in designs for consumer appliances, mobile phones, tablets, and other portable devices.

Working Principle

The L7824CD2T-TR voltage regulator employs a three-terminal feedback control scheme. It works by comparing the output voltage to a reference voltage. The reference voltage is internally set with precision dividers and external resistors. The error signal generated is compared with an internal reference and drives a pass transistor. The pass transistor is used to control the output voltage.

The regulator can also be adjusted using two external resistors. The two external resistors are used to program the output voltage, while the output voltage can also be regulated with the load current.

The L7824CD2T-TR has a wide input voltage range and is protected against overvoltage, overcurrent, and overtemperature. It also has a low voltage shutdown mode that can be used to shut down the regulator when the input voltage is too low.

The L7824CD2T-TR offers reliable and cost-effective performance in a variety of applications. Its practical and simple design makes it a good choice for many applications.

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