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RT8231BGQW - RICHTEK

Description: Complete DDR Memory Power Supply Controller, WQFN-20L 3x3

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Symbol
RT8231BGQW - RICHTEK - PCB symbol
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PCB Footprints
RT8231BGQW - RICHTEK PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - RT8231BGQW
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3D Models
RT8231BGQW - RICHTEK - 3D model - Quad Flat No-Lead - RT8231BGQW
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RT8231BGQW Details

  • Manufacturer Part Number:

    RT8231BGQW

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    Richtek Technology Corp

  • YTEOL:

    6

  • Additional Feature:

    ALSO REQUIRED INPUT VOLTAGE OF 4.5V TO 26V; OPERATES IN ADJUSTABLE MODE FROM 0.675V TO 3.3V

  • Analog IC - Other Type:

    SWITCHING CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    5.5 V

  • Input Voltage-Min:

    4.5 V

  • Input Voltage-Nom:

    5 V

  • JESD-30 Code:

    S-XQCC-N20

  • Length:

    3 mm

  • Number of Functions:

    1

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Body Material:

    UNSPECIFIED

  • Package Code:

    HVQCCN

  • Package Shape:

    SQUARE

  • Package Style:

    CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

  • Seated Height-Max:

    0.8 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK

  • Switching Frequency-Max:

    480 kHz

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Form:

    NO LEAD

  • Terminal Pitch:

    0.4 mm

  • Terminal Position:

    QUAD

  • Width:

    3 mm

RT8231BGQW Frequently Asked Questions (FAQs)

  • Richtek provides a recommended PCB layout in their application note AND9231, which includes guidelines for thermal vias, copper pours, and component placement to minimize thermal resistance and ensure reliable operation.
  • The output capacitor selection depends on the output voltage, output current, and desired ripple voltage. Richtek recommends using a low-ESR capacitor with a minimum capacitance of 10uF and a voltage rating of at least 1.5 times the output voltage. A X5R or X7R ceramic capacitor is a good choice.
  • Although the datasheet specifies a maximum input voltage of 18V, Richtek recommends limiting the input voltage to 15V to ensure reliable operation and prevent damage to the internal components.
  • Richtek recommends using an external OVP circuit, such as a voltage supervisor IC or a zener diode, to detect overvoltage conditions and disconnect the input power supply. The RT8231BGQW does not have built-in OVP.
  • The minimum input voltage required for the RT8231BGQW to operate is 6.5V, although the datasheet specifies a minimum input voltage of 5.5V. Operating below 6.5V may result in reduced performance and efficiency.

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RT8231BGQW Overview

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