SH01S0503A

Current - Output (Max):	300mA
Size / Dimension:	0.54" L x 0.31" W x 0.28" H (13.7mm x 8.0mm x 7.0mm)
Package / Case:	8-SMD Module, 5 Leads
Mounting Type:	Surface Mount
Efficiency:	73%
Operating Temperature:	-40°C ~ 85°C
Features:	SCP
Applications:	Medical
Voltage - Isolation:	1.5kV
Power (Watts):	1W
Series:	SH01S/D
Voltage - Output 3:	--
Voltage - Output 2:	--
Voltage - Output 1:	3.3V
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	4.5V
Number of Outputs:	1
Type:	Isolated Module
Part Status:	Active
Packaging:	Tube

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DC DC Converters

DC-DC converters (Direct Current – Direct Current also known as DC-DC power converters) come in various configurations to allow for the regulation, conversion, and control of power levels from a source of direct current (DC) to a load requiring different voltages and currents. DC-DC converters increase or decrease voltage, current level and even frequency as required to maintain the desired power output for the device. They are frequently used in power supplies and in situations where two different power sources need to be bridged. SH01S0503A is a type of switching DC-DC converter that is widely applied in many electronics products. It uses PWM (pulse width modulation) technique for the adjustment of output parameters. It is most commonly used in power supplies, mobile phone chargers, laptop chargers, etc.

Working Principle

The SH01S0503A is a step-down type switching DC-DC converter, which converts a higher input voltage to a lower regulated output voltage. It has an input voltage of 4.5 V to 13.2 V and a continuous output current of up to 3A. It has a very low quiescent current which allows it to be used in battery-powered applications.The device is effectively an electronic switch, one which can vary the ‘on’ and ‘off’ times of pulses of voltage and current to deliver the desired output voltage. This is done by using Pulse Width Modulation (PWM). This is the most common type of voltage control used for switching DC-DC converters; there are also some less common techniques such as Pulse Frequency Modulation (PFM) and Bang-Bang control. The PWM works by setting the ‘on’ time for a pulse relative to its ‘off’ time. By adjusting this ratio, it is possible to effectively increase or decrease the average voltage of a DC signal. This voltage adjustment is achieved by supplying more or less current to the load than it requires. For the SH01S0503A, the load currents are then compared to a reference voltage to determine the duty cycle of the PWM signal. The device senses the output voltage using a voltage feedback circuit, which then regulates the PWM duty cycle in order to maintain a constant output voltage. This feedback is known as closed-loop regulation which enables the device to accurately control the output voltage.

Application Field

The SH01S0503A is a specially designed step-down DC-DC converter with wide applications. It is a versatile, safe, and efficient device that is suitable for many electronic products such as laptop chargers, mobile phone chargers, power supplies, and other similar devices. It allows for efficient, low-power, and reliable performance. Due to its wide input voltage range from 4.5 V to 13.2 V and output current of up to 3A, it is suitable as a battery charger for various batteries including Li-ion, Li-polymer, and NI-MH batteries. It can also be used as a DC-DC converter for a wide variety of power applications including medical, automotive, communications, and industrial devices. In addition to its versatility, the SH01S0503A also features an internal over-temperature protection, over-current and over-voltage protection, and short circuit protection for enhanced safety. It also has an integrated thermal shutdown circuit to prevent overheating, as well as soft start and low ripple noise for noise reduction. This makes it an ideal choice for sensitive high-end applications such as aerospace, robotics, and other precision-controlled systems.In conclusion, the SH01S0503A switching DC-DC converter is a versatile, safe, and reliable device that is suitable for a wide range of applications. It enables efficient, low-power, and accurate performance that can be used in many different devices and power applications.

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