LT8646SIV#PBF

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LT8646SIV#PBF

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IC REG BUCK ADJUSTABLE 8A 32LQFN

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Spezifikationen

Attribut Wert
Package / Case Tray
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) 65V
Voltage - Output (Min/Fixed) 0.97V
Voltage - Output (Max) 12V
Current - Output 8A
Frequency - Switching 200kHz ~ 2.2MHz
Synchronous Rectifier Yes
Operating Temperature -40°C ~ 125°C (TJ)
Mounting Type Surface Mount

Übersicht

Description

The LT8646SIV#PBF is a high-efficiency, monolithic step-down switching regulator from Analog Devices, designed for applications requiring efficient power management. It operates with an input voltage range of 3V to 65V, making it versatile for various power sources. The device can deliver up to 8A of continuous output current while maintaining high efficiency, thanks to its synchronous rectification topology.
Key features include a fast minimum on-time of just 40ns, allowing for high switching frequencies, and a low quiescent current of 2.5μA, which helps in extending battery life in portable applications. It supports a programmable output voltage down to 0.8V, offering flexibility for different loads. The LT8646SIV#PBF also includes integrated protection features such as overvoltage, overcurrent, and thermal shutdown, enhancing its reliability.
Its compact 4mm x 5mm LQFN package with exposed pad ensures efficient thermal performance, making it suitable for space-constrained applications. This regulator is ideal for automotive, industrial, and communication systems where space efficiency and robust performance are critical.

Equivalent

The LT8646SIV#PBF is a synchronous step-down regulator from Analog Devices. Equivalent products may include:
1. Texas Instruments: TPS54360, LM53603
2. Microchip Technology: MCP16331, MIC28512
3. ON Semiconductor: NCP3170, NCP303150
4. Maxim Integrated: MAX17503
These alternatives offer similar features like efficiency, voltage, and current ratings. Always confirm compatibility with your specific application requirements.

Features

The LT8646SIV#PBF is a step-down switching regulator from Analog Devices featuring Silent Switcher® 2 architecture, which minimizes EMI emissions and enhances efficiency. Key features include:
- Input Voltage Range: 3.4V to 65V.
- Output Current: Up to 8A.
- High Efficiency: Up to 95%.
- Low Quiescent Current: 2.5µA in Burst Mode® operation.
- Fast Minimum Switch-On Time: 40ns, which supports high step-down ratios.
- Low EMI: Silent Switcher 2 technology with internal bypass capacitors.
- Flexible Frequency Operation: Programmable from 200kHz to 3MHz with synchronization capability.
- Precise Output Voltage: Adjustable via external resistors.
- Soft-Start and Tracking: Facilitates controlled start-up.
- Protection Features: Includes thermal shutdown, overcurrent protection, and short-circuit protection.
- Package: Compact 4mm × 4mm LQFN package, which enhances thermal performance.
These features make it suitable for automotive, industrial, and communication applications where low noise, high efficiency, and compact solution size are critical.

Pinout

The LT8646SIV#PBF is a high-efficiency, high-speed synchronous monolithic step-down switching regulator. It features a 10-lead package with the following pin functions:
1. VOUT (Pin 1): Output voltage sensing pin.
2. SENSE (Pin 2): Feedback pin for output voltage regulation.
3. TR/SS (Pin 3): Tracking/Soft-start pin to control the output voltage ramp.
4. RT (Pin 4): Frequency set pin to program the switching frequency.
5. SYNC/MODE (Pin 5): Synchronization pin for external clock or mode selection.
6. VIN (Pin 6): Input voltage supply pin.
7. SW (Pin 7): Switch node pin that connects to the inductor.
8. BST (Pin 8): Boost capacitor pin for the gate drive of the top MOSFET.
9. GND (Pin 9): Ground reference pin.
10. BIAS (Pin 10): Optional bias supply pin for additional efficiency.
This configuration allows the device to provide efficient power conversion, reduced EMI emissions, and flexibility in applications such as automotive, industrial, and communications systems.

Manufacturer

The LT8646SIV#PBF is manufactured by Analog Devices, Inc. Analog Devices is a multinational company specializing in the design and manufacturing of analog, mixed-signal, and digital signal processing integrated circuits. Known for its innovation and high-performance products, the company serves a wide range of industries, including automotive, communications, consumer electronics, industrial, and healthcare. Analog Devices offers various products such as amplifiers, data converters, sensors, and power management solutions, focusing on providing technology that bridges the physical and digital worlds through data conversion and signal conditioning.

Application

The LT8646SIV#PBF is a step-down switching regulator ideal for applications requiring high efficiency and compact size. Its application areas include automotive power systems, industrial power supplies, telecommunications, and distributed power systems. The regulator's wide input voltage range makes it suitable for automotive environments where battery voltage can vary. Its fast transient response and low quiescent current make it suitable for industrial applications that require efficient power conversion. Additionally, its ability to maintain high efficiency at various load conditions fits telecommunications equipment, where power consumption is critical. Overall, the LT8646SIV#PBF is well-suited for applications demanding reliable, efficient power conversion in space-constrained environments.

Package

The LT8646SIV#PBF is packaged in a 4mm x 4mm LQFN (Leadless Quad Flat No-Lead) package with 24 pins.

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