Overview
The LT3990HMSE-3.3#TRPBF is an adjustable frequency monolithic buck switching regulator produced by Analog Devices Inc. This regulator is designed to operate with a wide input voltage range of up to 62V and offers a fixed output voltage of 3.3V. It is known for its low quiescent current of 2.5µA, making it highly efficient for various applications. The LT3990 series is available in different packages, including the 16-TFSOP (0.118", 3.00mm Width) with an exposed pad, which enhances thermal performance.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Units |
|---|---|---|---|---|
| Input Voltage Range | 4 | - | 62 | V |
| Output Voltage | 3.26 | 3.3 | 3.34 | V |
| Maximum Output Current | - | - | 350 | mA |
| Quiescent Current (VEN/UVLO High) | 1.2 | 1.9 | 2.8 | µA |
| Switching Frequency | 200kHz | - | 2.2MHz | - |
| BOOST Pin Voltage | - | - | 75 | V |
| Package Type | - | - | 16-TFSOP (0.118", 3.00mm Width) | - |
Key Features
- Wide Input Voltage Range: Up to 62V, making it suitable for a variety of power supply applications.
- Low Quiescent Current: Only 2.5µA, which is beneficial for power-efficient designs.
- Adjustable Frequency: The switching frequency can be adjusted from 200kHz to 2.2MHz.
- Fixed Output Voltage: Available in fixed output voltages, specifically 3.3V for the LT3990HMSE-3.3 model.
- Thermal Performance: The 16-TFSOP package with an exposed pad enhances thermal dissipation.
- Power Good and UVLO Features: Includes power good and undervoltage lockout (UVLO) functions for robust operation.
Applications
- Industrial Power Supplies: Suitable for industrial applications requiring high input voltage tolerance and low quiescent current.
- Automotive Systems: Can be used in automotive systems due to its wide input voltage range and robust thermal performance.
- Telecommunications Equipment: Ideal for telecom equipment that requires efficient and reliable power regulation.
- Embedded Systems: Useful in embedded systems where power efficiency and compact design are crucial.
Q & A
- What is the input voltage range of the LT3990HMSE-3.3#TRPBF?
The input voltage range is up to 62V.
- What is the fixed output voltage of the LT3990HMSE-3.3#TRPBF?
The fixed output voltage is 3.3V.
- What is the quiescent current of the LT3990HMSE-3.3#TRPBF when VEN/UVLO is high?
The quiescent current is typically 1.9µA when VEN/UVLO is high.
- What is the maximum output current of the LT3990HMSE-3.3#TRPBF?
The maximum output current is 350mA.
- What is the switching frequency range of the LT3990HMSE-3.3#TRPBF?
The switching frequency can be adjusted from 200kHz to 2.2MHz.
- What package type is the LT3990HMSE-3.3#TRPBF available in?
The component is available in a 16-TFSOP (0.118", 3.00mm Width) package with an exposed pad.
- Does the LT3990HMSE-3.3#TRPBF have power good and UVLO features?
Yes, it includes power good and undervoltage lockout (UVLO) functions.
- What are some typical applications of the LT3990HMSE-3.3#TRPBF?
It is suitable for industrial power supplies, automotive systems, telecommunications equipment, and embedded systems.
- How does the exposed pad in the 16-TFSOP package benefit the component?
The exposed pad enhances thermal dissipation, improving the overall thermal performance of the component.
- Can the LT3990HMSE-3.3#TRPBF be used in high-temperature environments?
Yes, it is designed to operate in a variety of temperature conditions, but specific temperature limits should be checked in the datasheet.
