SUW104812C

Current - Output (Max):	450mA, 450mA
Supplier Device Package:	--
Size / Dimension:	1.54" L x 0.83" W x 0.26" H (39.2mm x 21.0mm x 6.5mm)
Package / Case:	7-DIP Module
Mounting Type:	Through Hole
Efficiency:	86%
Operating Temperature:	-40°C ~ 85°C (With Derating)
Features:	Remote On/Off, OCP
Applications:	ITE (Commercial)
Voltage - Isolation:	500V
Series:	SUW
Voltage - Output 3:	--
Voltage - Output 2:	-12V
Voltage - Output 1:	12V
Voltage - Input (Max):	76V
Voltage - Input (Min):	36V
Number of Outputs:	2
Type:	Isolated Module
Part Status:	Active
Packaging:	--

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DC DC Converters

DC-DC converters are well-known electronic power conversion devices used to transform power sources of different voltage and current values. A specific DC-DC converter that can be reliably and effectively used is the SUW104812C. It is a single input step down (buck) DC-DC converter, and it can provide a total output power up to 30 Watts. The SUW104812C is an ideal component for a wide range of applications where high efficiency is in need and low cost is desired.

Applications

The low-cost, low-profile SOT-23 package of the SUW104812C makes it suitable for many applications. It can be used in a wide range of computer and consumer electronics products, including notebook and desktop PCs, LCD monitors, LCD TVs, set-top boxes, thin clients, wireless routers, and other home appliances. The SUW104812C is also ideal for many industrial, medical, automotive, avionic, and military applications. Its versatility and flexibility make it perfect for battery powered devices, and for circuits that provide high efficiency at full load and low quiescent current.

Working Principle

The SUW104812C utilizes a step down DC-DC converter topology to obtain optimal efficiency when operating at various load conditions. It consists of an inductor, a diode, a switch, an output capacitor, and a feedback control loop. This circuit has the ability to change the output voltage of the device from a fixed input voltage.When the switch is closed, the output capacitor is charged and the inductor stores energy. When the switch is opened, the inductor acts as an energy source and the stored energy is then released. The diode ensures that none of the energy is discharged back into its input terminals. This action causes the output voltage to drop and the output current increases. To prevent the voltage from dropping too low, a feedback circuit is used to sense the output voltage and to adjust the on-off time of the switch accordingly.

Conclusion

The SUW104812C is a versatile DC-DC converter with high efficiency and small size. Its low-cost and low profile SOT-23 package make it ideal for cost-sensitive applications which require high efficiency. It can be used in a variety of applications, such as consumer and industrial electronics, automotive, avionic, medical, and military, and it is well-suited for battery powered devices. The principle of operation of this device is based on a Buck DC-DC converter topology, and utilizes an inductor, a diode, a switch, an output capacitor, and a feedback control loop to ensure optimal efficiency and reliability.

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