LT3990HMSE#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 ~ 150°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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LT3990HMSE#PBF is a highly integrated, compact DC/DC switching regulator from Analog Devices that is used to efficiently convert and regulate a wide range of input voltages (2.2V to 21V) into a variety of fixed or adjustable output voltages. In addition to its versatile input/output voltage ranges, the LT3990HMSE#PBF offers an extensive feature set that includes synchronizable switching frequencies from 400 kHz to 4 MHz, programmable soft-start capabilities, an adjustable output voltage skew of ±25%, a programmable undervoltage lockout (UVLO) threshold, programmable transition times for smooth transition between steps, and adjustable current limit settings. Additionally, its compact size (5 mm x 5 mm QFN package) and low quiescent current requirements make it ideal for portable equipment and energy harvesting applications.The LT3990HMSE#PBF is a versatile integrated switch regulator that can be used to convert low to medium level input voltages (2.2V to 21V) into a broad spectrum of adjustable or fixed output voltages. The input/output voltage range is programmable, offering the flexibility of configuration for different applications such as laptops, servers, telecom and industrial equipment, as well as energy harvesting components.In addition to its wide input/output voltage ranges, the LT3990HMSE#PBF offers robust operating features and an extensive feature set that includes synchronizable switching frequencies from 400 kHz to 4 MHz, programmable soft-start capabilities, an adjustable output voltage skew of ±25%, a programmable undervoltage lockout (UVLO) threshold, programmable transition times for smooth transition between steps, and adjustable current limit settings. Its 5 mm x 5 mm QFN package makes it a good choice for portable equipment and energy harvesting applications due to its compact size and low power consumption.The LT3990HMSE#PBF works by taking an input voltage and converting it to a higher or lower output voltage in an efficient and reliable manner. Its broad range of operating frequencies allows it to efficiently switch between the input and output voltages in a variety of situations, including those applications that demand quick load transient response.The operating voltage range is adjustable using the onboard voltage divider and reference divider, with an external reference voltage of 0V to 4V. This means that users can quickly and easily customize the output voltage regulation for their specific application.The LT3990HMSE#PBF also has programmable soft-start and transition times, which can be adjusted to minimize inrush current and ensure a smooth transition between steps. Additionally, there is an adjustable current limit setting that allows users to halt the buck/boost operation whenever the output current exceeds the programmed limit.Finally, the LT3990HMSE#PBF offers an adjustable output voltage skew of ±25%, which compensates for any misalignment between the input and output waveforms. This allows it to ensure that the output waveform is tightly regulated to the desired output voltage.Overall, the LT3990HMSE#PBF is a highly integrated, versatile DC/DC switching regulator from Analog Devices that is suitable for a variety of input and output voltage requirements. It offers an extensive feature set, small form factor and low power consumption, making it ideal for a range of applications, from laptops, servers and telecom equipment to industrial equipment and energy harvesting.

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