Overview
The LT3991EMSE#TRPBF, produced by Analog Devices Inc., is a high-performance, adjustable frequency monolithic buck switching regulator. This component is designed to accept a wide input voltage range of 4.3V to 55V and provides an adjustable output voltage from 1.19V to 30V. It is particularly notable for its low quiescent current of 2.8µA, making it suitable for applications requiring high efficiency and low power consumption.
The LT3991EMSE#TRPBF is available in a thermally enhanced 10-pin MSOP package, which is compact and suitable for a variety of applications, including automotive, portable products, and industrial supplies.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 4.3V to 55V | V |
| Output Voltage Range | 1.19V to 30V | V |
| Output Current | 1.2A | A |
| Quiescent Current | 2.8µA | A |
| Switching Frequency | Programmable up to 2.2MHz | Hz |
| Package Type | 10-Pin MSOP | - |
| Operating Temperature Range | -40°C to 125°C | °C |
| Boost Pin Voltage | Up to 75V | V |
Key Features
- Wide Input Voltage Range: The LT3991EMSE#TRPBF can operate with input voltages from 4.3V to 55V, making it versatile for various applications.
- Low Quiescent Current: With a quiescent current of 2.8µA, this regulator is highly efficient and suitable for battery-powered devices.
- Adjustable Output Voltage: The output voltage can be adjusted from 1.19V to 30V, providing flexibility in design.
- Programmable Switching Frequency: The switching frequency can be programmed up to 2.2MHz, allowing for optimization based on application requirements.
- Compact Package: The 10-pin MSOP package is thermally enhanced, making it suitable for applications where space is limited.
- Burst Mode Operation: The regulator operates in Burst Mode at light loads, reducing output voltage ripple and improving efficiency.
Applications
- Automotive Systems: Suitable for automotive battery regulation due to its wide input voltage range and high efficiency.
- Portable Products: Ideal for battery-powered devices where low quiescent current is crucial for extending battery life.
- Industrial Supplies: Used in industrial power supplies where reliability and efficiency are paramount.
- General Power Management: Applicable in various power management scenarios requiring adjustable output voltages and high efficiency.
Q & A
- What is the input voltage range of the LT3991EMSE#TRPBF?
The input voltage range is from 4.3V to 55V.
- What is the adjustable output voltage range of this regulator?
The output voltage can be adjusted from 1.19V to 30V.
- What is the quiescent current of the LT3991EMSE#TRPBF?
The quiescent current is 2.8µA.
- What is the maximum output current of this regulator?
The maximum output current is 1.2A.
- What package types are available for the LT3991EMSE#TRPBF?
The component is available in a 10-pin MSOP package.
- What is the operating temperature range of this regulator?
The operating temperature range is from -40°C to 125°C.
- Can the switching frequency be programmed?
- What is Burst Mode operation in the LT3991EMSE#TRPBF?
Burst Mode operation reduces output voltage ripple and improves efficiency at light loads).
- Is the LT3991EMSE#TRPBF suitable for automotive applications?
- What are some common applications of the LT3991EMSE#TRPBF?
