ST5R28MTR

Voltage - Output (Min/Fixed):	2.8V
Base Part Number:	ST5R*
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-25°C ~ 85°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	150kHz
Current - Output:	100mA
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	0.8V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Boost
Output Configuration:	Positive
Function:	Step-Up
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction to ST5R28MTR

The ST5R28MTR is an integrated DC-DC switching regulator from STMicroelectronics. It is a type of power management component that features a synchronous buck regulator with integrated power MOSFET switches, allowing for up to 65A continuous current and over 75A peak current capability for small, cost-effective designs. In addition, it boasts a wide range of input voltage ranges and provides excellent performance when switching over wide range of frequencies. With its high efficiency, small form factor and low-output voltage ripple and low standby power consumption, it is ideal for applications that need a small and reliable power supply.

Application Field and Working Principle

The ST5R28MTR is a PMIC (Power Management Integrated Circuit) that falls within the classification of DC DC switching regulators. This particular product is especially well-suited for low-voltage and low-power designs that require DC-DC power conversion. For example, it can be used in telecoms, mobile phones and computer peripherals, as well as LED lighting, automotive and industrial applications.In operation, the ST5R28MTR works by taking an AC signal and converting it into a DC signal for use in the application at hand. The incoming signal is captured and its voltage is then converted into current. This current then passes through a regulated inductive switch, resulting in a regulated output voltage. The ST5R28MTR features two integrated power MOSFETs that allow for switching activity over a range of frequencies. The switching speed of each MOSFET is independently adjustable, allowing for a tight output voltage ripple in response to dynamic loads. As a result, such dynamic loads can be handled at higher frequencies, providing improved efficiency with respect to power dissipation. Moreover, the product also provides overcurrent protection and undervoltage lockout for improved reliability and safety.Besides its DC-DC power conversion capabilities, the ST5R28MTR also provides a very low stand-by power consumption of just 0.25mW in order to save energy and reduce costs. With such features, it is clear why this device is so popular in applications such as LED lighting, automotive and industrial systems.

Conclusion

In conclusion, the ST5R28MTR is a power management integrated circuit that falls within the DC DC switching regulator product group. Its wide range of frequency conversion, excellent performance and low standby power consumption are well-suited for a variety of applications that require DC-DC conversion. Whether it is used in telecoms, mobile phones, computer peripherals, LED lighting, automotive or industrial systems, this particular device offers an energy-efficient and reliable solution.

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