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PMIC - Voltage Regulators - Linear

The UA78L08ACLPE3 is an ultra-low noise, low-dropout (LDO) voltage regulator featuring very low quiescent current of 10 μA. It is an ultra-low power regulator with a high power output capability of 800mA. It offers excellent load regulation and ripple rejection, and operates at very low noise levels. It is designed for applications such as low-power audio systems, portable audio players, smart phones, and digital video cameras.

Characteristics

The UA78L08ACLPE3 offers a high power capability of 800mA, with extreme low quiescent current (10 μA), making it suitable for high power and low power applications. It operates over an operating temperature range of -40°C to +85°C. The device also has a shutdown mode, where it consumes less than 0.5 μA of current. It offers a wide line voltage input range of 3V to 40V, making it suitable for a wide range of applications.

Usage Applications

The UA78L08ACLPE3 is designed to be used in a variety of applications including portable displays, video cameras, music players, and other consumer electronics applications. It is also suitable for in-vehicle systems, such as engine and emissions control, automotive infotainment, and other automotive applications. The device also has a low dropout voltage of 0.9V, making it suitable for powering microprocessors and FPOAs in portable and notebook computers.

Working Principle

The UA78L08ACLPE3 is an LDO (low-dropout) voltage regulator, which is a type of linear regulator. Linear regulators, such as LDOs, convert a higher input voltage to a lower output voltage. They do this by maintaining the output voltage of the regulator constant, regardless of fluctuations in the input voltage. This is done by using a variable resistor, known as a pass transistor, which adjusts its resistance in order to maintain the desired output voltage. The UA78L08ACLPE3 is designed to be very efficient in order to conserve power and also provide very low noise levels.

Features

• Operates over a wide input voltage range of 3V to 40V
• 800mA max output current
• Low quiescent current of 10 μA
• Wide operating temperature range of -40°C to +85°C
• Very low noise levels
• Shutdown mode consumes less than 0.5 μA of current
• Low dropout voltage of 0.9V

Conclusion

The UA78L08ACLPE3 is an ultra-low noise, low dropout voltage regulator designed for a wide range of applications. It has a high power capability of 800mA, and offers excellent load regulation, ripple rejection, and very low noise. It also has a wide operating temperature range, and offers a low dropout voltage of 0.9V. It is ideal for applications such as portable displays, video cameras, and other consumer electronic products, as well as in-vehicle systems such as engine and emissions control and automotive infotainment.

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