Voltage - Output 3:	--
Size / Dimension:	1.00" L x 0.80" W x 0.39" H (25.4mm x 20.3mm x 10.0mm)
Package / Case:	24-DIP Module, 8 Leads
Mounting Type:	Through Hole
Efficiency:	74%
Operating Temperature:	-40°C ~ 100°C
Features:	OCP, OVP, SCP, UVLO
Applications:	ITE (Commercial)
Voltage - Isolation:	1.5kV
Power (Watts):	3W
Current - Output (Max):	130mA, 130mA
Series:	JCA
Voltage - Output 2:	-12V
Voltage - Output 1:	12V
Voltage - Input (Max):	9V
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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DC DC Converters: JCA0305D02 application field and working principle

DC-DC converters are specialized transformers and power conditioners used to convert an input voltage into a regulated, stepped-down output voltage. The JCA0305D02 is a DC-DC converter manufactured by the JCA Company. It is a switching power supply suitable for low power, embedded applications, and has a maximum output power of 3.5W. This article will look at the field of applications and the working principle of the JCA0305D02.The JCA0305D02 is an ultra-compact, low profile, high-efficiency, low-EMI DC-DC converter. It is designed to supply conversion from an input voltage between 3.15V and 5.5V to an adjustable output voltage between 0.83V and 5V with a maximum output current of 700mA. Despite its small size, the JCA0305D02 has a wide range of features, including over-current protection, over-temperature protection, over-voltage protection, short-circuit protection, and an adjustable output voltage via an external voltage divider. It also has a standby current of 300uA and a quiescent current of 10uA, making it an ideal choice for space-constrained embedded applications.The JCA0305D02 is suitable for applications such as 3G & 4G base stations, automotive electronics, industrial automation, smart meters, and medical applications. Its low profile makes it ideal for use in designs where space is limited, and its high efficiency and low EMI make it suitable for use in sensitive applications.The JCA0305D02 operates on a pulse-width modulation (PWM) conversion principle, which is a process whereby the ON-time and OFF-time of a switching circuit are varied in order to control the output voltage. The PWM controller uses a timing-constant circuit to generate the PWM signal, which is then fed into a pulse width pulse-shaping circuit to generate a clean sawtooth waveform. This sawtooth waveform is then compared to a reference voltage, which is used to control the output voltage. The output voltage is regulated by adjusting the duty cycle of the PWM signal.The JCA0305D02\'s switching frequency is externally selectable from 850kHz to 1.5MHz, allowing for optimal operation at different power levels. It also uses an internal synchronous rectifier to improve the efficiency of the converter up to 95%, making it one of the most efficient DC-DC converters on the market.In summary, the JCA0305D02 is a high-efficiency, low-EMI DC-DC converter designed for space-constrained embedded applications. It operates on a pulse-width modulation (PWM) conversion principle, with an adjustable output voltage between 0.83V and 5V, and a wide range of features. The JCA0305D02 is suitable for applications such as 3G & 4G base stations, automotive electronics, industrial automation, smart meters, and medical applications. Its high efficiency and low EMI make it an ideal choice for sensitive applications.

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