UA78M05CKCS

Voltage Dropout (Max):	2V @ 350mA
Base Part Number:	UA78M05
Supplier Device Package:	TO-220-3
Package / Case:	TO-220-3
Mounting Type:	Through Hole
Operating Temperature:	0°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Short Circuit
Control Features:	--
PSRR:	80dB (120Hz)
Current - Output:	500mA
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	5V
Voltage - Input (Max):	25V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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Introduction

The UA78M05CKCS is a Linear-regulating integrated circuit developed by the Taiwanese company Unisonic Technologies. It is a type of charge-pump DC-to-DC voltage converter, ideal for a variety of low-power application areas such as consumer electronics and consumer-electronics, and military/industrial applications. It is an excellent example of the linear-regulator with its low voltage drop, low power consumption, and no audit hum. It is available in maximum ratings of ± 2A, ± 100V, and noise level <20mV. Additionally, it can operate temperatures up to +85°C.

Application fields

The UA78M05CKCS is a high-performance linear regulator, which makes it a perfect fit for any application requiring a low-dropout voltage regulator. As a result, it is widely used in both consumer and military/industrial settings.In the consumer space, the linear regulator is commonly employed in multiple applications, ranging from mobile phones, laptops, tablets, and LED TVs to video cameras and gaming consoles. Its excellent linear power-conversion capability helps to reduce power consumption and heat generation in these devices, thus providing superior operating performance.The UA78M05CKCS is also used in a range of industrial and military applications, such as factory automation and manufacturing, telecommunications, power supplies, battery chargers, and high-end laptops and PCs. In such settings, the UA78M05CKCS helps to deliver consistent and accurate output, thus ensuring reliable and smooth operation.

Working Principle

The UA78M05CKCS is a charge-pump DC-to-DC voltage converter, utilizing the unidirectional transfer of the input voltage to the output voltage. It does this by utilizing an efficient charge-pump design, with two-phase switch drive to avoid the reverse-operation flow, thus producing a consistent output voltage.The charge-pump voltage converter utilizesopposite-direction flows of current. The input voltage current is delivered to the output voltage through an output transistor, while the opposite flow of current is generated in the opposite direction, so that a steady and accurate output voltage is maintained.The UA78M05CKCS also utilizes an internal linear regulator, which is activated when the current exceeds the maximum ratings ofthe linear transformer. In such situations, the linear regulator will regulate the output voltage at the rated voltage, thus ensuring that the output voltage remains stable, even during times of high current.

Conclusion

The UA78M05CKCS is a high-performance linear regulator, which makes it an ideal choice for a variety of applications. It is widely used in both consumer and military/industrial settings for its superior operating performance and its low power consumption and low noise levels. Additionally, its charge-pump design allows for superior linear power-conversion capabilities, while its internal linear regulator helps to maintain a consistent and accurate output voltage.

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