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RT8231AGQW - RICHTEK

Description: PWM Controller  Adjustable Current Limit with Low-Side RDS(ON) Sensing  Low Quiescent Supply Current  Quick Load-Step Response within 100ns  1% VVDDQ Accuracy Over Line and Load  Adjustable 0.675V to 3.3V Output Range for 1.8V (DDR2), 1.5V (DDR3), 1.35V (DDR3L), 1.2V (LPDDR3), 1.2V (DDR4) and 1.1V (LPDDR4)  4.5V to 26V Battery Input Range  Resistor Adjustable Frequency  Over-/Under-Voltage Protection  Internal Voltage Ramp Soft-Start  Drives Large Synchronous Rectifier MOSFETs  Powe

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Symbol
RT8231AGQW - RICHTEK - PCB symbol
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PCB Footprints
RT8231AGQW - RICHTEK PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - WQFN-20L 3x3
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3D Models
RT8231AGQW - RICHTEK - 3D model - Quad Flat No-Lead - WQFN-20L 3x3
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RT8231AGQW Details

  • Manufacturer Part Number:

    RT8231AGQW

  • 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

RT8231AGQW Frequently Asked Questions (FAQs)

  • A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Keep the input and output capacitors close to the IC, and use short and wide traces for the power lines.
  • Ensure that the output capacitor is within the recommended range (22uF to 47uF), and the ESR is within the recommended range (0.01Ω to 0.1Ω). Also, keep the input and output capacitors close to the IC, and use a low-ESR capacitor for the output.
  • The RT8231AGQW can handle up to 28V input voltage, but it's recommended to keep it below 24V for optimal performance and reliability.
  • The RT8231AGQW is rated for operation up to 125°C, but it's recommended to keep the junction temperature below 115°C for optimal performance and reliability.
  • The output voltage can be calculated using the formula: Vout = (1 + R2/R1) x Vref, where R1 and R2 are the feedback resistors, and Vref is the internal reference voltage (1.25V).

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RT8231AGQW Overview

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