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LT3990EDD#TRPBF
+NomenclatureIC REG BUCK ADJ 350MA 10DFN
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FabricantAnalog Equipment GmbH.
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Pièce fabricant #LT3990EDD#TRPBF
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Fiche technique LT3990EDD#TRPBF DataSheet
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Spécifications
| Attribut | Valeur |
| PartStatus | Active |
| Function | Step-Down |
| OutputConfiguration | Positive |
| Topology | Buck |
| OutputType | Adjustable |
| NumberofOutputs | 1 |
| Voltage-Input(Min) | 4.2V |
| Voltage-Input(Max) | 62V |
| Voltage-Output(Min/Fixed) | 1.21V |
| Voltage-Output(Max) | 25V |
| Current-Output | 350mA |
| Frequency-Switching | 210kHz ~ 2.3MHz |
| SynchronousRectifier | No |
| OperatingTemperature | -40°C ~ 125°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | 10-WFDFN Exposed Pad |
| SupplierDevicePackage | 10-DFN (3x3) |
| BaseProductNumber | LT3990 |
Présentation
Description
The LT3990 features an adjustable switching frequency, which can be set from 200kHz to 2.5MHz, allowing designers to optimize efficiency and performance according to their specific requirements. It also includes built-in protection features such as overcurrent protection, thermal shutdown, and short-circuit protection, enhancing system reliability.
Packaged in a thermally enhanced 10-lead DFN (3mm × 3mm) package, the LT3990EDD#TRPBF is compact, facilitating ease of integration into space-constrained designs. Its high efficiency, wide input voltage range, and robust protection features make it a versatile choice for designers needing a reliable power conversion solution in challenging environments.
Equivalent
1. Texas Instruments' LM43603, which is a 3.5-V to 36-V, 0.6-A step-down voltage regulator.
2. STMicroelectronics’ L7986, a 38 V, 2 A step-down switching regulator.
3. ON Semiconductor's NCP3063, a DC-DC step-down regulator supporting similar voltage ranges.
It's important to verify the electrical characteristics and pin compatibility when selecting alternatives.
Features
1. Wide Input Voltage Range: It operates efficiently over a broad input voltage from 4V to 60V, making it suitable for a variety of applications.
2. Output Voltage: The device can be adjusted to provide output voltages from 1.21V to 36V.
3. Output Current: It is capable of delivering up to 350 mA of continuous output current.
4. Efficiency: The regulator offers high efficiency, up to 90%, due to its low quiescent current and low RDS(ON) switch.
5. Switching Frequency: The LT3990 can be programmed to switch between 200 kHz and 2.5 MHz, allowing for flexibility in component selection and efficiency optimization.
6. Protection Features: It includes built-in protection features such as thermal shutdown, cycle-by-cycle current limit, and short-circuit protection to enhance reliability and safety.
7. Package: It is available in a thermally enhanced 8-lead (3mm × 3mm) DFN package.
These features make the LT3990EDD#TRPBF ideal for industrial, automotive, and distributed power systems.
Pinout
The primary function of the LT3990 is to efficiently convert a higher input voltage to a lower output voltage with high efficiency, suitable for applications requiring a compact footprint and high performance. It operates over a wide input voltage range, and features include low quiescent current, programmable switching frequency, soft-start capability, and a power-good indicator.
The specific pin count and configuration can be verified from the official datasheet, which provides detailed information on the pin functions, electrical characteristics, and typical applications. Always refer to the manufacturer's documentation for precise and critical design specifications.