ISA0509 Power Supplies - Board Mount

Voltage - Output 3:	--
Size / Dimension:	0.60" L x 0.33" W x 0.29" H (15.2mm x 8.3mm x 7.3mm)
Package / Case:	10-SMD Module, 6 Leads
Mounting Type:	Surface Mount
Efficiency:	80%
Operating Temperature:	-40°C ~ 105°C
Features:	SCP
Applications:	ITE (Commercial)
Voltage - Isolation:	1.5kV
Power (Watts):	1W
Current - Output (Max):	56mA, 56mA
Series:	ISA
Voltage - Output 2:	-9V
Voltage - Output 1:	9V
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	4.5V
Number of Outputs:	2
Type:	Isolated Module
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tube

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<p>A DC/DC converter is an electrical device that converts direct current (DC) from one voltage level to another. It is a type of electric power converter. Its main function is to convert DC power from a source of one potential to a load of another potential. The ISA0509 is an example of such a DC/DC converter. This article will focus on its application field and working principle.</p><p>The ISA0509 converter is a DC/DC step-down converter with a specific purpose: to convert from input voltage range of 2.5V to 5.5V and output voltage range of 0.6V to 0.9V, and to provide up to 500mA of output current. It is primarily used in personal digital assistants (PDAs) and other high-end consumer electronics, such as digital cameras, MP3 players and mobile phones. The ISA0509 is designed with advanced features that are beneficial in terms of size, efficiency and power transfer characteristics.</p><p>The ISA0509 converter has an external inductor and uses synchronous rectification, allowing it to achieve a high level of efficiency, typically in the range of 90 to 95%. The converter has a feature called Differential Remote Sense, which allows precision voltage regulation for extended battery life in portable applications. It also has under-voltage and over-voltage protection, as well as short-circuit protection. The device also offers low quiescent current for improved battery life.</p><p>The working principle for the ISA0509 DC/DC Converter is based on the principle of electromagnetic induction. It takes an input voltage, stored in the form of a magnetic field in an inductor, and converts it into another voltage level using the coupling between the inductor and a capacitor. The inductor stores energy in the magnetic field when the input voltage is applied and then releases the energy, coupled with the capacitor, during the output phase of the conversion.</p><p>The ISA0509 has excellent performance with low ripple, low noise operation, and it is ideal for applications with stringent operating conditions and where efficiency is an important factor. The step-down mode, precision voltage regulation, high efficiency and high-current capability of the ISA0509 make it a suitable choice for applications in which power needs to be efficiently and accurately managed.</p>

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