LT8641IUDC#PBF
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Analog Devices Inc. LT8641IUDC#PBF

Manufacturer No:
LT8641IUDC#PBF
Manufacturer:
Analog Devices Inc.
Package:
Tube
Description:
IC REG BUCK ADJ 3.5A 20QFN
Delivery:
Payment:
iso14001
iso45001
iso9001
iso13485

Product Introduction

Overview

The LT8641IUDC#PBF is a high-performance step-down DC/DC converter from Analog Devices Inc., featuring the Silent Switcher architecture. This architecture is designed to minimize EMI/EMC emissions while delivering high efficiency across a wide range of frequencies. The LT8641 is a monolithic, constant frequency, current mode converter that is suitable for various applications requiring high efficiency and low noise.

Key Specifications

Parameter Min Typ Max Units
Minimum Input Voltage 2.6 3.0 V
Output Voltage Range 0.783 24 V
Output Current 5 A
Switching Frequency 200 1000 3000 kHz
Operating Temperature Range -40 125 °C
Quiescent Current (VEN/UV = 0V) 0.75 0.75 3 µA
Package Type 18-Lead (3mm × 4mm) Plastic QFN

Key Features

  • Silent Switcher Architecture: Minimizes EMI/EMC emissions, ensuring high efficiency and low noise operation.
  • High Efficiency: Achieves high efficiency across a wide range of frequencies and load conditions.
  • Constant Frequency Operation: Operates at a constant frequency set by an external resistor on the RT pin.
  • Multiple Operating Modes: Supports Burst Mode, pulse-skipping mode, and full frequency continuous operation, configurable via the SYNC/MODE pin.
  • Tracking Function: Allows the output voltage to track an external voltage source via the TR/SS pin.
  • Low Quiescent Current: Ultralow quiescent current in Burst Mode, making it suitable for low power applications.
  • Automotive Grade: Versions available with controlled manufacturing to support automotive applications, designated with a #W suffix.

Applications

  • Automotive Systems: Suitable for automotive applications due to its high reliability and wide operating temperature range.
  • Industrial Power Supplies: Ideal for industrial power supplies requiring high efficiency and low EMI.
  • Telecommunications: Used in telecommunications equipment where low noise and high efficiency are critical.
  • Medical Devices: Applicable in medical devices that require reliable and efficient power conversion.
  • Consumer Electronics: Suitable for various consumer electronics requiring compact, high-efficiency power solutions.

Q & A

  1. What is the minimum input voltage for the LT8641IUDC#PBF?

    The minimum input voltage is 2.6V.

  2. What is the maximum output current of the LT8641IUDC#PBF?

    The maximum output current is 5A.

  3. What are the different operating modes supported by the LT8641IUDC#PBF?

    The device supports Burst Mode, pulse-skipping mode, and full frequency continuous operation.

  4. How is the switching frequency set in the LT8641IUDC#PBF?

    The switching frequency is set using an external resistor on the RT pin.

  5. What is the purpose of the TR/SS pin in the LT8641IUDC#PBF?

    The TR/SS pin allows the output voltage to track an external voltage source.

  6. Is the LT8641IUDC#PBF suitable for automotive applications?

    Yes, versions designated with a #W suffix are available for automotive applications.

  7. What is the operating temperature range of the LT8641IUDC#PBF?

    The operating temperature range is -40°C to 125°C.

  8. What package type is the LT8641IUDC#PBF available in?

    The device is available in an 18-Lead (3mm × 4mm) Plastic QFN package.

  9. How does the Silent Switcher architecture benefit the LT8641IUDC#PBF?

    The Silent Switcher architecture minimizes EMI/EMC emissions, ensuring high efficiency and low noise operation.

  10. What is the quiescent current of the LT8641IUDC#PBF when VEN/UV = 0V?

    The quiescent current is 0.75µA when VEN/UV = 0V.

Product Attributes

Function:Step-Down
Output Configuration:Positive
Topology:Buck
Output Type:Adjustable
Number of Outputs:1
Voltage - Input (Min):3V
Voltage - Input (Max):65V
Voltage - Output (Min/Fixed):0.8V
Voltage - Output (Max):64.35V
Current - Output:3.5A
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)
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Same Series
1080269-1
1080269-1
2098 5685 54

Similar Products

Part Number LT8641IUDC#PBF LT8640IUDC#PBF LT8641EUDC#PBF LT8641HUDC#PBF
Manufacturer Analog Devices Inc. Analog Devices Inc. Analog Devices Inc. Analog Devices Inc.
Product Status Active Active Active Active
Function Step-Down Step-Down Step-Down Step-Down
Output Configuration Positive Positive Positive Positive
Topology Buck Buck Buck Buck
Output Type Adjustable Adjustable Adjustable Adjustable
Number of Outputs 1 1 1 1
Voltage - Input (Min) 3V 3.4V 3V 3V
Voltage - Input (Max) 65V 42V 65V 65V
Voltage - Output (Min/Fixed) 0.8V 0.97V 0.8V 0.8V
Voltage - Output (Max) 64.35V 42V 64.35V 64.35V
Current - Output 3.5A 5A 3.5A 3.5A
Frequency - Switching 210kHz ~ 2MHz 210kHz ~ 2MHz 210kHz ~ 2MHz 210kHz ~ 2MHz
Synchronous Rectifier Yes Yes Yes Yes
Operating Temperature -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) -40°C ~ 150°C (TJ)
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case 20-WFQFN, 18 Leads, Exposed Pad 20-WFQFN, 18 Leads, Exposed Pad 20-WFQFN, 18 Leads, Exposed Pad 20-WFQFN, 18 Leads, Exposed Pad
Supplier Device Package 20-QFN (3x4) 20-QFN (3x4) 20-QFN (3x4) 20-QFN (3x4)

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