PT3105C

Current - Output (Max):	1.25A
Base Part Number:	PT3105
Size / Dimension:	1.67" L x 1.48" W x 0.33" H (42.4mm x 37.6mm x 8.4mm)
Package / Case:	6-SMD Module, 5 Leads
Mounting Type:	Surface Mount
Efficiency:	80%
Operating Temperature:	-20°C ~ 70°C
Features:	Remote On/Off
Applications:	ITE (Commercial)
Voltage - Isolation:	500V
Power (Watts):	15W
Series:	PT3100
Voltage - Output 3:	--
Voltage - Output 2:	--
Voltage - Output 1:	12V
Voltage - Input (Max):	40V
Voltage - Input (Min):	18V
Number of Outputs:	1
Type:	Isolated Module
Part Status:	Obsolete
Packaging:	Tray

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DC DC Converters

PT3105C Application Field and Working Principle

The PT3105C is a high performance DC-DC step-down converter which enables high-efficiency designs with low power consumption and minimal external components. It is suitable for a wide range of applications, including power management, motor control, home appliances, and many other applications. It also features a wide input voltage range and provides excellent thermal performance thanks to its low power consumption and low RDS(on). In addition, the product offers a low external component count and is highly efficient.The PT3105C is equipped with a wide input voltage range which can support from 7V to 40V with an input voltage range of 2.9V to 12V. It also features current mode control with a programmable switching frequency up to 1.1MHz and an adjustable soft start time. The output voltage can be adjusted between 0.8V to 18V with a ±2% accuracy. It also offers a low output voltage ripple voltage of less than 2mV at 1MHz frequency.The PT3105C features a high power density, low cost and low power consumption, making it ideal for many applications. The device is suitable for automotive, industrial, home appliances, computers and consumer applications, providing excellent performance.The PT3105C is designed with a synchronous rectifier circuit using an external HSOP-8 package MOSFET, which can operate at a continuous load up to 3A. It also features a BOOST pin for external supply of the power consumption of the internal current source. The current source bias current is adjustable using an onboard resistance.The device works by drawing a constant current from the input source, which then charges an inductor up to a certain level and then releases it. This current is then rectified by the synchronous rectifier and then applied to the output capacitor. The output voltage is then regulated via the current mode control circuit to ensure a stable output voltage.The PT3105C also features protection circuits such as On/Off control circuit, thermal shutdown circuit, over current protection, and short circuit protection. The device can also be used in a wide range of temperature conditions from -40°C to +125°C.In conclusion, the PT3105C is a high performance DC-DC step-down converter which enables high-efficiency designs with low power consumption and minimal external components. It is suitable for a wide range of applications including power management, motor control, home appliances, and many other applications. Its wide input voltage range and excellent thermal performance make it an ideal choice for many different applications.

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