L7905ACD2T

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L7905ACD2T is a linear voltage regulator designed and brought to the market by STMicroelectronics. It is primarily used as an output voltage regulator for DC power supplies, making it ideal for applications that require a stable, low-noise voltage source. The device is based on a voltage regulation scheme known as “current limiting”, which prevents the output voltage from dropping too much below its nominal setting due to severe conditions or high transient loads. Additionally, the device features a temperature compensated reference and current limiting protection to further ensure robust operation in a wide variety of applications.

The L7905ACD2T features an output voltage range of 5 V, adjustable from 1.25 V to 5 V. This makes it a suitable choice for many applications, such as microcontrollers, logic ICs, motor control and LED backlighting. The device is also capable of supplying up to 1 A of output current. It has low dropout voltage of 0.3-1.5V, good thermal performance and stability undergoing temperature variations ranging from -40 to 125 °C. It has high output voltage accuracy of +/- 1.0% and fast current source-sink transitions due to internal hysteresis.

The L7905ACD2T employs an internal temperature-compensated bandgap reference to provide a stable output voltage, making it very reliable in harsh environments. The device also features a current limiting circuit, which prevents the output voltage from falling below the specified regulation level during extreme conditions or high transient loads. In addition, the device contains an over-voltage protection circuit to prevent overshoot and short-circuit current limiting.

The L7905ACD2T is available in a variety of packages, including TO-92, DIP-8 and SOT-223. It can operate from an input voltage range of 3 V to 25 V, with a maximum storage temperature of 150 °C, and a maximum junction temperature of 150 °C.

In summary, the L7905ACD2T is an excellent solution for voltage regulation applications because of its low dropout voltage, good thermal performance, excellent stability in temperature variations, robust current source-sink transitions, and over-voltage protection features.

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