ISD0103S05 Power Supplies - Board Mount

Voltage - Output 4:	--
Supplier Device Package:	--
Size / Dimension:	0.50" L x 0.44" W x 0.26" H (12.7mm x 11.0mm x 6.6mm)
Package / Case:	8-SMD Module, 5 Leads
Mounting Type:	Surface Mount
Efficiency:	75%
Operating Temperature:	-40°C ~ 105°C (With Derating)
Features:	--
Applications:	ITE (Commercial)
Voltage - Isolation:	4.2kV
Power (Watts):	1W
Current - Output (Max):	200mA
Series:	ISD01
Voltage - Output 3:	--
Voltage - Output 2:	--
Voltage - Output 1:	5V
Voltage - Input (Max):	3.63V
Voltage - Input (Min):	2.97V
Number of Outputs:	1
Moisture Sensitivity Level (MSL):	--
Type:	Isolated Module
Lead Free Status / RoHS Status:	--
Part Status:	Active

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DC DC Converters

DC-DC converters are electrically-isolated devices that allow the transfer of power from a source of DC power to a load. The ISD0103S05 is a single phase, high power, synchronous buck converter with an input voltage range of 4.5V to 28V and an adjustable output voltage from 5V to 20V with a maximum output current of 3A. It features an on-board compensation pin and an external feedback resistors for loop control and output voltage stabilization.

Functional Principle

The heart of the ISD0103S05 is a buck switching converter topology. This design works by periodically connecting the input power to the output in a series of pulses at a programmed frequency, forming what is called a switching waveform. With this design, a non-isolated power converter can produce only an output voltage that is related to the input voltage, usually less than and/or higher than the input voltage itself, and consequently must have a good input regulation and a well-defined output voltage for this difference.The ISD0103S05 takes this design one step further by incorporating a synchronous rectification circuit which improves the overall efficiency of the converter by saving energy losses in the rectifier. In addition to this, the converter utilizes an external resistor feedback network to allow the user to adjust the output voltage of the device.

Application Fields

The ISD0103S05 can be found in a variety of applications, ranging from industrial, automotive, LED lighting, and computerized goods. Industrial applications can benefit from the device\'s high-power capability with its up to 3A output current and up to 28V input voltage. This allows the device to be used as a direct replacement for a linear regulator in applications such as motor speed control.The ISD0103S05\'s wide voltage range also makes it suitable for automotive applications. Its synchronous rectification circuit can make it possible to drive headlight modules from nominal 12V or 24V AC automotive power supplies. The device can also be used to drive an alternator in hybrid or electric vehicles.The device is also popular with LED lighting applications such as street lighting, car headlights and interior lighting. It can be used to drive up to 3A of LED power with its low voltage drop and high efficiency. Its wide input voltage makes it suitable for a wide range of LED lighting applications.And finally, this converter can be used in computerized goods such as notebook PCs, mobile phones, routers, and more. The power management integrated circuit (PMIC) in these devices can use the ISD0103S05 to reduce the voltage from the battery or power supply to the level required for the system components, thus helping to extend the life of the battery and reduce heat from the device.

Conclusion

The ISD0103S05 is a high-performance, single-phase DC-DC converter that has applications in a wide range of fields. Its wide input voltage range, up to 3A output current, integrated synchronous rectification circuit, and adjustable output voltage via an external resistor feedback network make it suitable for industrial, automotive, LED lighting, and computerized goods applications.

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