LT3990EMSE#PBF

Voltage - Output (Min/Fixed):	1.21V
Base Part Number:	LT3990
Supplier Device Package:	16-MSOP-EP
Package / Case:	16-TFSOP (0.118", 3.00mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	210kHz ~ 2.3MHz
Current - Output:	350mA
Voltage - Output (Max):	25V
Series:	--
Voltage - Input (Max):	62V
Voltage - Input (Min):	4.2V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tube

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LT3990EMSE#PBF DC DC Switching Regulator – Application Field and Working PrincipleIn the world of Power Management Integrated Circuits (PMICs), DC DC switching regulators, such as the LT3990EMSE#PBF, can be found. In PMICs the voltage regulator is an electronic regulator that maintains the output voltage of a power supply constant, despite any changes in the load or input power. Specifically, the LT3990EMSE#PBF is part of a family of low-dropout linear regulator devices featuring precision enable/disable control and output voltage sequencing. This article will explore the various application fields available for the LT3990EMSE#PBF and analyze the working principle behind each application.The LT3990EMSE#PBF provides a logic-controlled, low dropout regulator that is capable of regulating output voltages from 0.8V to 5.0V with high accuracy. This voltage regulator features a small form factor, making it ideal for applications where space is a premium. Additionally, it offers over-current protection, temperature-compensated voltage, high output current, and low dropout characteristics, making it an ideal choice for a wide range of applications.Common applications for the LT3990EMSE#PBF include, but are not limited to, industrial and automotive products. Some of these applications include data processors, microprocessors, mobile telephones, battery-powered systems, computers and modems, and automotive electronics. Furthermore, it can be used in applications where the output voltage needs to be changed quickly, such as in flat-panel TVs and laptop computers.The LT3990EMSE#PBF is a buck, boost, and inverting type DC DC switching regulator. Buck, boost, and inverting type DC DC switching regulators differ from linear regulators in that they use switching circuits, rather than large dissipation components, to achieve regulation. The LT3990EMSE#PBF employs a pulse width modulation (PWM) control technique that switches between two poles to regulate the output voltage. This PWM technique makes it possible to achieve a highly precise voltage regulation tolerance, while also providing a high power density.The LT3990EMSE#PBF also features a range of built-in protection features that increase design flexibility and further improve its performance. These features include over-current protection, over-voltage protection, under-voltage protection, over-temperature protection, and short-circuit protection.The LT3990EMSE#PBF is an extremely versatile DC DC switching regulator, making it an ideal choice for a wide variety of applications. Its integrated protection and PWM control techniques make it an excellent choice for both industrial and automotive uses. Furthermore, its form factor, output current, and dropout characteristics make it an ideal choice for applications requiring a tightly regulated voltage.

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