LM78L05ACZ

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LM78L05ACZ

The LM78L05ACZ is an linear voltage regulator from the Positive Voltage Regulators range from Texas Instruments. LM78L05ACZ is a low-dropout 5V regulator, with a voltage drop of 300mV at 100mA. The device includes an on-chip voltage reference, internally set to 4.63V, an error amplifier, a series pass element and a current limit circuit. It is useful for applications where low voltage output and low current capabilities are needed.

Application Field

The LM78L05ACZ is primarily used to provide simple and stable voltage regulation in a variety of applications, such as:

• Mobile phones
• Battery charging systems
• Power supplies
• Instrumentation
• Consumer electronics
• White goods

The device is able to provide good voltage regulation in low current applications, due to its low-dropout capability. Its low input–output voltage differential makes it suitable for a wide range of input voltages, and its wide operating temperature range of -40 to 125°C makes it suitable for hot/cold environments.

Working Principle

The LM78L05ACZ device uses an error amplifier and a series pass element to regulate output voltage. The error amplifier compares the output voltage to the 4.63V reference voltage. The series pass element passes the current required to maintain this regulation. Any additional current required is placed in an internal current limiter in order to maintain accuracy.

The LM78L05ACZ device is an excellent solution in a number of applications, with its low dropout capability, low noise and low cost. In addition, this device is very easy to use, with its handful of external components.

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