LT8640EUDC#PBF

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LT8640EUDC#PBF

IC REG BUCK ADJ 5A 20QFN

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規格

Series Silent Switcher®1
Part Status Active
Function Step-Down
Output Configuration Positive
Topology Buck
Output Type Adjustable
Number of Outputs 1
Voltage - Input (Min) 3.4V
Voltage - Input (Max) 42V
Voltage - Output (Min/Fixed) 0.97V
Voltage - Output (Max) 42V
Current - Output 5A
Frequency - Switching 210kHz ~ 2MHz
Synchronous Rectifier Yes
Operating Temperature -40°C ~ 125°C (TJ)
Mounting Type Surface Mount
Package / Case 20-WFQFN, 18 Leads, Exposed Pad
Supplier Device Package 20-QFN (3x4)
Base Product Number LT8640

概述

Description

The LT8640EUDC#PBF is a high-performance synchronous step-down regulator from Analog Devices, designed for efficient power conversion. It features a wide input voltage range of 3V to 60V, making it suitable for various applications, including automotive, industrial, and telecommunications. The device can deliver up to 2A of output current with high efficiency, often exceeding 90%, which helps in reducing thermal management needs.
Key features include a low quiescent current, allowing for improved battery life in portable applications, and a wide output voltage range adjustable via external resistors. The LT8640 also incorporates features like soft start, short-circuit protection, and thermal shutdown, enhancing its reliability. An internal compensation network simplifies design and improves transient response.
The LT8640EUDC#PBF is housed in a compact, thermally enhanced package, making it suitable for space-constrained environments. Its combination of high efficiency, wide input range, and robust features makes it an excellent choice for various DC-DC conversion applications.

Features

The LT8640EUDC#PBF is a high-performance, synchronous step-down regulator from Analog Devices. Key features include:
1. Wide Input Voltage Range: Operates from 3.4V to 15V, supporting a wide range of applications.
2. High Efficiency: Efficiency up to 95% with low quiescent current, enhancing battery life in portable devices.
3. Output Current Capability: Delivers up to 2A continuous output current.
4. Low Output Ripple: Features low output voltage ripple, ideal for noise-sensitive applications.
5. Flexible Output Voltage: Adjustable output voltage from 0.8V to 5V.
6. Integrated Power Switches: Reduces component count and PCB space requirements.
7. Thermal Protection: Includes thermal shutdown and current limiting for enhanced reliability.
8. Small Footprint: Offered in a compact 3mm x 4mm DFN package.
These attributes make the LT8640EUDC#PBF suitable for various applications, including automotive, industrial, and communication systems.

Package

The LT8640EUDC#PBF is packaged in a 16-lead, thermally enhanced, LQFN (Leadframe Quad Flat No-lead) package type.

Pinout

The LT8640EUDC#PBF is a high-performance step-down (buck) regulator from Analog Devices. It features a total of 20 pins. The key functions of the pins include:
1. Input Voltage Pins (VIN) - Connect to the input voltage source.
2. Output Pins (VOUT) - Connect to the load to provide regulated output voltage.
3. Ground Pins (GND) - Common ground reference for the device.
4. Compensation Pins (COMP) - For frequency compensation to stabilize the feedback loop.
5. Feedback Pin (FB) - Connects to the output voltage divider to regulate the output voltage.
6. Switching Node (SW) - Connects to the inductor in the buck converter topology.
7. Enable Pin (EN) - Used to enable or disable the regulator.
8. PG (Power Good) - Indicates when the output voltage is within the specified range.
9. Soft Start (SS) - Controls the startup time of the output voltage.
The LT8640 offers a wide input voltage range, high efficiency, and low output ripple, making it suitable for various applications.

Manufacturer

The LT8640EUDC#PBF is manufactured by Analog Devices, Inc. Analog Devices is a multinational company that specializes in the design and production of high-performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits. Founded in 1965, the company serves various sectors, including industrial, automotive, communications, and consumer electronics. It is well-known for its innovative technologies in signal processing and power management. The LT8640 is a synchronous step-down regulator designed to provide efficient power conversion in a compact form factor, making it suitable for a wide range of applications.

Application

The LT8640EUDC#PBF is a high-efficiency, low-noise step-down regulator suitable for various applications, including automotive, industrial, and telecommunications power supplies. It is ideal for battery-powered devices, portable equipment, and RF applications due to its low quiescent current and wide input voltage range. Additionally, it can be used in power management for microcontrollers, sensors, and other embedded systems.

Equivalent

The LT8640EUDC#PBF is a low-noise, high-efficiency buck converter. Equivalent products include:
1. MP1584 – General-purpose step-down regulator.
2. TPS563201 – 3A, 1.2MHz step-down DC-DC converter.
3. LM2596 – Adjustable step-down voltage regulator.
4. LM3671 – High-efficiency buck converter.
5. LTC3780 – High-efficiency, step-down switching regulator.
Ensure to check specifications and features for compatibility with your application.

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