UA78M05CKC

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The UA78M05CKC is a fixed output voltage 5V Low Dropout Regulator (LDO) which is designed to provide high accuracy and low noise output, making it suitable for many different applications. It is a linear regulator, which means that it reduces undesired and out of the system voltage variations and drops, in order to maintain a constant and stable output voltage. This regulator is ideal for use in various systems, such as medical equipment, industrial automation, portable devices, and automotive applications.

The UA78M05CKC is a monolithic integrated circuit and can work with both negative and positive input voltage. The input voltage range is from 4.5V to 36V, the output voltage is fixed at 5V, the output current is adjustable from 0-200mA, and the dropout voltage is 40mV (typical) with a 5V output. The quiescent current of the device is also very low, only 35μA (typical). The power dissipation of the device is very low, only 1mW typ.

In order for the UA78M05CKC to work, it uses a stabilizing feedback mechanism. This feedback loop monitors the output voltage of the device and adjusts it accordingly to the desired output voltage. The reference voltage is taken from the output of the reference generator circuit, which is built-in to the chip and is typically 4V. This voltage is compared to the voltage input at the non-inverting input of the error amplifier, and the output of the error amplifier is compared to the internal reference voltage. If the non-inverting input voltage is greater than the reference voltage, it output is low and the voltage control switch is turned off, decreasing the output voltage. Otherwise, the output of the error amplifier is high and the voltage control switch is turned on, increasing the output voltage. This feedback loop allows for the regulator to maintain a precise output voltage.

The UA78M05CKC is designed to operate over a wide temperature range of -40°C to 125°C and has a maximum junction temperature of 125°C and a typical operating temperature range from 0°C to 85°C. The device also has other features such as built-in EMC filter, over current protection (OCP), over temperature protection (OTP), and soft-start capability for ultra-low-dropout start up. One of the main advantages of the device is that it requires no external components. This makes it an excellent choice for space sensitive applications.

The UA78M05CKC is an excellent choice for many different applications, due to its wide input voltage range and low noise output. Its accuracy and low dropout voltage make it ideal for medical equipment, industrial automation, portable devices, and automotive applications, where precise output voltage control is essential. Furthermore, the device requires no external components, which makes it ideal for space sensitive applications.

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