LT3502IMS#PBF

Voltage - Output (Min/Fixed):	0.8V
Base Part Number:	LT3502
Supplier Device Package:	10-MSOP
Package / Case:	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	1.1MHz
Current - Output:	500mA
Voltage - Output (Max):	36V
Series:	--
Voltage - Input (Max):	40V
Voltage - Input (Min):	3V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tube

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LT3502IMS#PBF DC DC Switching Regulators

Switching regulators have become a fundamental tool for power management due to their wide range of input voltage, high efficiency, and low output noise. The LT3502IMS#PBF is an adjustable frequency buck-boost switching regulator that packs a wealth of features in a tiny 3 mm × 3 mm DFN package. This high power density makes it ideal for space-constrained, portable electronics applications.

Features and Benefits

The LT3502IMS#PBF offers several important features that address the needs of power management applications. One of the most important is its wide range of operating input voltage. It supports input voltage range from 3.2 V to 23 V and wide output voltage range from 2.3 V to 17.3 V. This makes it suitable for a variety of DC-DC applications, such as battery-powered systems, automotive electronics and industrial power supplies. In addition, it offers adjustable switching frequency, adjustable current limit and soft-start capabilities. It also features overcurrent protection and thermal protection for safer operation and longer life of the device.The LT3502IMS#PBF also offers high efficiency of up to 95% and low output noise for clean power management. In addition, it is RoHS-compliant and supports up to 30 V input and 20 V output. Its thermally-enhanced 3 mm × 3 mm DFN package makes it suitable for highly integrated, small-scale designs.

Application Fields

The LT3502IMS#PBF is ideal for a variety of applications where good power management is essential, including portable electronics, automotive electronics, and industrial power supplies. It can be used to design a system that offers efficient power regulation and low noise performance even at high current loads. It is also suitable for battery-powered systems where low power dissipation is necessary.

Working Principle

The LT3502IMS#PBF works on the principle of buck-boost switching regulator. It operates as a buck regulator when the input voltage is greater than the output voltage, and as a boost regulator when the output voltage is greater than the input voltage. It uses a constant on-time control scheme, which provides a low-cost, efficient solution for power regulation. The switching frequency is programmed using an external resistor. The current limit is set using an external resistor, and the soft start is controlled using an internal capacitor.

Conclusion

The LT3502IMS#PBF offers a wide range of features and benefits to power management applications. It offers adjustable frequency, adjustable current limit, and soft-start capabilities. It also offers high efficiency and low output noise. This makes it ideal for a variety of applications, including battery-powered systems, automotive electronics, and industrial power supplies. It is also suitable for high current loads and for space-constrained, portable electronics applications.

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