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LTC3649EUFD#PBF

Name: LTC3649EUFD#PBF
Rating: 4.7 (12 reviews)

IC REG BUCK ADJ 4A 28QFN

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資料表 LTC3649EUFD#PBF DataSheet
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規格

Part Status	Active
Function	Step-Down
Output Configuration	Positive
Topology	Buck
Output Type	Adjustable
Number of Outputs	1
Voltage - Input (Min)	3.1V
Voltage - Input (Max)	60V
Voltage - Output (Min/Fixed)	0V
Voltage - Output (Max)	55V
Current - Output	4A
Frequency - Switching	1MHz
Synchronous Rectifier	Yes
Operating Temperature	-40°C ~ 125°C (TJ)
Mounting Type	Surface Mount
Package / Case	28-WFQFN Exposed Pad
Supplier Device Package	28-QFN (4x5)
Base Product Number	LTC3649

概述

Description

The LTC3649EUFD#PBF is a high-efficiency synchronous step-down (buck) DC-DC converter from Analog Devices, designed for powering low-voltage systems. It features a wide input voltage range of 3V to 16V, making it suitable for various battery and industrial applications. The device can deliver up to 3A of output current while maintaining high efficiency, which is critical for battery-powered applications.
Key features include an adjustable output voltage, excellent line and load regulation, and a low quiescent current for improved battery life. The LTC3649 also incorporates features like soft-start, thermal shutdown, and current limiting to enhance reliability. Its compact package (QFN) and integrated components facilitate easy design and reduce the footprint on the PCB. Overall, the LTC3649EUFD#PBF is ideal for powering microcontrollers, sensors, and communication devices in portable and embedded systems.

Features

The LTC3649EUFD#PBF is a high-performance, synchronous step-down DC/DC converter. Key features include:
1. Wide Input Voltage Range: Accepts input voltages from 2.5V to 15V.
2. High Efficiency: Delivers up to 95% efficiency, reducing heat generation.
3. Output Current: Supports up to 3A output current.
4. Adjustable Output Voltage: Output voltage can be set from 0.8V to 5V via external resistors.
5. Compact Package: Available in a 16-lead, 3mm x 3mm QFN package.
6. Low Quiescent Current: Offers low quiescent current for improved efficiency in light loads.
7. Integrated Switches: Contains internal power switches that minimize external component count.
8. Protection Features: Includes overvoltage, overcurrent, and thermal shutdown protection.
9. Soft-Start Functionality: Reduces inrush current during startup.
10. Power Good Indicator: Provides a power good output to signal status.
These features make the LTC3649EUFD#PBF suitable for a variety of applications, including portable devices and battery-powered systems.

Package

The LTC3649EUFD#PBF is packaged in a 16-lead TSSOP (Thin Shrink Small Outline Package) with dimensions of 5mm x 4.4mm.

Pinout

The LTC3649EUFD#PBF is a high-performance, step-down DC/DC converter with a pin count of 16. It is designed to deliver a high efficiency, low ripple output voltage in various applications.
Key functions of its pins include:
1. VIN (Input Voltage) - Supply voltage input.
2. GND (Ground) - Common ground connection.
3. SW (Switch Node) - Connection for the inductor.
4. VOUT (Output Voltage) - Regulated output voltage.
5. COMP (Compensation) - Compensation network connection for stability.
6. FB (Feedback) - Voltage feedback input for regulation.
7. RUN - On/off control pin.
8. ISET - Current sense setting.
9. PG (Power Good) - Indicator for output voltage status.
10. SS (Soft Start) - Soft-start control for inrush current limiting.
Other pins may include those for additional features like thermal protection and frequency setting. The device is suitable for applications requiring compact power solutions.

Manufacturer

The LTC3649EUFD#PBF is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company that specializes in data conversion, signal processing, and power management technologies. The company designs and manufactures a wide range of integrated circuits (ICs) and other electronic components used in various industries, including communications, automotive, healthcare, and industrial applications. Founded in 1965 and headquartered in Norwood, Massachusetts, Analog Devices is known for its innovation in high-performance analog, mixed-signal, and digital signal processing solutions.

Application

The LTC3649EUFD#PBF is a high-efficiency, synchronous buck converter suitable for applications such as battery-powered devices, automotive systems, industrial equipment, and RF transmitters. It is designed for point-of-load regulation, providing low output voltages from higher input voltages, making it ideal for powering microcontrollers, sensors, and communication devices in compact, space-constrained environments. Its features support applications requiring high reliability and efficiency.

Equivalent

Equivalent products for the LTC3649EUFD#PBF include the MAX8603, TPS63060, and LM3671. These chips also provide high-efficiency buck-boost regulation and similar power output specifications. Always verify compatibility with your specific application requirements before substituting components.