LT3502AEDC

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LT3502AEDC

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規格

Package Tube
ProductStatus Obsolete
Function Step-Down
OutputConfiguration Positive
Topology Buck
OutputType Adjustable
NumberofOutputs 1
Voltage-Input(Min) 3V
Voltage-Input(Max) 40V
Voltage-Output(Min/Fixed) 0.8V
Voltage-Output(Max) 32V
Current-Output 500mA
Frequency-Switching 2.25MHz
SynchronousRectifier No
OperatingTemperature -40°C ~ 125°C (TJ)
MountingType Surface Mount
Package/Case 8-WFDFN Exposed Pad

概述

Description

The LT3502AEDC is a high-performance, step-down (buck) switching regulator designed for efficient power conversion in electronic devices. It is manufactured by Analog Devices, Inc., a company known for its precision and reliability in the semiconductor industry. The device operates over a wide input voltage range, making it suitable for various applications, including battery-powered systems, distributed power systems, and point-of-load regulation.
The LT3502AEDC can deliver up to 500mA of continuous output current. It features a high efficiency of up to 88%, which minimizes heat generation and enhances device reliability. The switching frequency is typically set at 1.1MHz, allowing the use of compact external components and reducing overall solution size.
Additionally, the regulator includes several features to enhance performance and safety, such as overcurrent protection, thermal shutdown, and a soft-start capability to limit inrush current during startup. Its compact 8-lead (3mm × 2mm) DFN package allows for space-constrained designs. Overall, the LT3502AEDC is a versatile and efficient solution for designers seeking to optimize power management in their applications.

Features

The LT3502AEDC is a step-down switching regulator designed for efficiency and compact applications. Key features include:
1. Input Voltage Range: It operates with an input voltage range from 3.6V to 40V, making it suitable for a variety of power sources including automotive and industrial applications.
2. Output Voltage: The device provides a fixed output voltage of 3.3V, supporting up to 500mA load current.
3. Efficiency: It features high efficiency over a wide load range due to its internal power switch and low quiescent current.
4. Switching Frequency: The regulator operates at a fixed frequency of 2.2MHz, which allows for the use of small inductors and capacitors.
5. Thermal Performance: The LT3502AEDC comes in a thermally enhanced 8-lead DFN package, which helps in maintaining thermal performance under high loads or ambient temperatures.
6. Protection Features: It includes built-in protection features such as overcurrent protection, thermal shutdown, and undervoltage lockout.
7. Application Versatility: Its wide input range and robust performance suit it for battery-powered devices, distributed power systems, and point-of-load regulation.
These features make the LT3502AEDC an efficient and versatile choice for compact, high-performance voltage regulation needs.

Package

The LT3502AEDC is typically available in a 2mm x 3mm DFN (Dual Flat No Leads) package with exposed pads for enhanced thermal performance.

Pinout

The LT3502AEDC is a step-down switching regulator from Analog Devices. It is housed in a 2mm x 2mm DFN (Dual Flat No Leads) package. The device typically has 8 pins. Here is a brief description of its pin functions:
1. SW (Pins 1 and 2): Switch Node - Connects to the inductor and is the output of the internal power switch.
2. GND (Pin 3): Ground - This is the ground reference for the device.
3. FB (Pin 4): Feedback - Used to set the output voltage via an external resistor divider.
4. VC (Pin 5): Compensation - This pin is used for frequency compensation.
5. RT (Pin 6): Timing Resistor - Sets the switching frequency with an external resistor.
6. VIN (Pin 7): Input Voltage - Supplies the input voltage to the device.
7. SHDN (Pin 8): Shutdown - Used to turn the device on or off.
The LT3502AEDC is designed for applications requiring a compact, efficient, and adjustable step-down voltage regulator.

Manufacturer

The LT3502AEDC is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company known for designing and manufacturing products used in analog, mixed-signal, and digital signal processing applications. The company's product portfolio includes data converters, amplifiers, radio frequency (RF) devices, power management products, and other components used in a wide range of industries such as automotive, communications, healthcare, and industrial automation. Analog Devices focuses on innovation and providing solutions that bridge the physical and digital worlds, enabling advancements in technology across various sectors.

Application

The LT3502AEDC is a step-down switching regulator designed for applications requiring efficient voltage conversion. It is commonly used in battery-powered devices, distributed power systems, and point-of-load regulation in communication systems. Other application areas include automotive electronics, industrial equipment, and consumer electronics where compact size and thermal performance are critical. Its features make it suitable for powering microcontrollers, sensors, and other low-voltage digital ICs.

Equivalent

The LT3502AEDC is a step-down switching regulator. Equivalent products can include the LM2842 from Texas Instruments, the MIC4576 from Microchip Technology, and the TPS54331 from Texas Instruments. These alternatives offer similar functionality with varying specifications and might require different configurations or additional components. Always consult the datasheets for precise compatibility and performance characteristics.

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