MC34025DWR2

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PMIC - AC DC Converters, Offline Switchers is a type of electronic component Package and its application for power management integrated circuit. MC34025DWR2 is an offline switcher IC which can be used for lighting, portable devices, and consumer products.

MC34025DWR2 has varieties of features to achieve switching power solution and handling high input voltage from 35V to 60V, with peak current up to 2A and provides 900mW power dissipation. This power converter can be maintained in an extreme low current consumption standby mode, for example, when the input voltage below 6V and the load is only 0.2mA, the standby current of MC34025DWR2 can be only 0.2uA. Moreover, when the input voltage back to normal, the MC34025DWR2 can fastly begin working within 1μs. Besides, MC34025DWR2 provides the internal driver and that remove the external power switch and rectifier elements, thus a simple and compact design can be achieved and it leads to less cost and a low profile.

MC34025DWR2 can also have the special function of output short circuit protection (SCP) and thermal shutdown. SCP helps the component to protect itself when the output quickly cuts off the output due to environmental or mechanism change. Thermal shut down can protect itself from over heat due to the long operating hours, the power will be cut off and when the heat decrease, the component can restart. So that is why the MC34025DWR2 is qualified for the application uses in lighting and consumer’s product.

The working principle of MC34025DWR2 is a type of flyback switching regulator. It is working in two-phase drive mode and is a typical offline switcher with pulse width modulation (PWM) of power frequency switching duration control component. Its operating condition is monitored by the Pulse-by-Pulse Over current Protection (POP) technique which switches the power when the peak current over the designed current. With the advance protection circuit, the component will not be damaged when the system malfunction.

In conclusion, MC34025DWR2 is one of the popular IC in the PMIC-AC DC Converters, Offline Switchers package and its reliable performance can be used for lighting, portable devices and consumer products. Its high efficient and low power consumption is the additional point that attract more customers and make it easy to operate in many application.

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