Overview
The LT3990IMSE#TRPBF is a high-performance, adjustable frequency monolithic buck switching regulator produced by Analog Devices Inc. This component is designed to accept a wide input voltage range of 4.2V to 62V and provides an adjustable output voltage from 1.21V to 25V with a maximum output current of 350mA. It is available in a 16-pin MSOP (Micro Small Outline Package) with enhanced thermal performance, making it suitable for various applications requiring efficient power management.
Key Specifications
| Parameter | Value |
|---|---|
| Brand | Analog Devices Inc. |
| Description | Conv DC-DC 4.2V to 62V Step Down Single-Out 1.21V to 25V 0.35A 16-Pin MSOP EP T/R |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Adjustable |
| Voltage - Input (Min) | 4.2V |
| Voltage - Input (Max) | 62V |
| Voltage - Output (Min) | 1.21V |
| Voltage - Output (Max) | 25V |
| Current - Output | 350mA |
| Frequency - Switching | 210kHz ~ 2.3MHz |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | 16-Pin MSOP EP |
| Quiescent Current | 2.5µA at 12V |
Key Features
- Low Ripple Burst Mode Operation: The LT3990 operates in a low ripple burst mode to minimize switching losses and reduce output ripple.
- Adjustable Frequency: The switching frequency can be adjusted using the RT pin, allowing for flexibility in design.
- Integrated Diodes: The regulator includes integrated diodes, which enhance efficiency and reduce the need for external components.
- Low Shutdown Current: The device has a low shutdown current of 0.7µA, making it suitable for battery-powered applications.
- Power Good Flag: A power good flag signals when the output voltage reaches 90% of the programmed value, ensuring reliable operation.
- Thermally Enhanced Packages: Available in 16-pin MSOP and 10-pin DFN packages with enhanced thermal performance.
- Wide Operating Temperature Range: Operates from -40°C to 125°C, making it suitable for a variety of environmental conditions.
Applications
- Automotive Battery Regulation: Suitable for automotive systems due to its wide input voltage range and high temperature operation.
- Power for Portable Products: Ideal for battery-powered devices requiring efficient power management.
- Industrial Supplies: Used in industrial power supplies where high input voltage and adjustable output voltage are necessary.
Q & A
- What is the input voltage range of the LT3990IMSE#TRPBF?
The input voltage range is from 4.2V to 62V.
- What is the maximum output current of the LT3990IMSE#TRPBF?
The maximum output current is 350mA.
- What is the switching frequency range of the LT3990IMSE#TRPBF?
The switching frequency range is from 210kHz to 2.3MHz.
- What type of package is the LT3990IMSE#TRPBF available in?
The component is available in a 16-pin MSOP EP package.
- What is the quiescent current of the LT3990IMSE#TRPBF?
The quiescent current is 2.5µA at 12V.
- Does the LT3990IMSE#TRPBF have an integrated power good flag?
Yes, it includes a power good flag that signals when the output voltage reaches 90% of the programmed value.
- What is the operating temperature range of the LT3990IMSE#TRPBF?
The operating temperature range is from -40°C to 125°C.
- Is the LT3990IMSE#TRPBF suitable for automotive applications?
Yes, it is suitable due to its wide input voltage range and high temperature operation.
- Does the LT3990IMSE#TRPBF operate in burst mode?
Yes, it operates in a low ripple burst mode to minimize switching losses and reduce output ripple.
- Can the switching frequency of the LT3990IMSE#TRPBF be adjusted?
Yes, the switching frequency can be adjusted using the RT pin.
