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UA78M05IDCY application field and working principle

The UA78M05IDCY Low-Dropout (LDO) linear regulator is a reliable low-cost 3-terminal voltage regulator (with ground pin) that can output a current up to 150mA. It features a wide input voltage range (up to 28V) and an ultra-low dropout voltage (350mV).

Features:

• Maximum input voltage: 28V
• Minimum output voltage regulator: 0.8V
• Ultra-low dropout voltage: 350mV
• Output current: up to 150mA
• Output accuracy: ±1.0%
• Excellent line and load regulation
• Low quiescent current

Application Field:

The UA78M05IDCY is ideal for a wide range of applications, from low-power to mid-power circuitry, such as cell phones, portable electronic devices, monitors and TV sets, Bluetooth headsets, USB hubs, external hard drives, laptops, and other consumer electronic products.

Working Principle:

The UA78M05IDCY is a low-dropout (LDO) linear voltage regulator integrated circuit. It is a 3-terminal device with a ground pin. It works by using a reference voltage (usually 2.5V) to compare with the input voltage and determine the amount of current to be delivered to the output.

It features an ultra-low dropout voltage (350mV), which helps to maintain a stable output voltage even when the input voltage drops significantly. A low quiescent current helps to maximize the efficiency of the device, and its output current can reach up to 150mA.

The device offers good line and load regulation and an output accuracy of ±1.0%, making it a reliable and cost-effective solution for many applications.

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