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L4988D - STMicroelectronics

Description: Automotive Low Drop Voltage Regulator

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L4988D - STMicroelectronics PCB footprint - Small Outline Packages - Small Outline Packages - SO-08
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L4988D Details

  • Manufacturer Part Number:

    L4988D

  • Brand Name:

    STMicroelectronics

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    SOIC

  • Package Description:

    SO-8

  • Pin Count:

    8

  • Country Of Origin:

    Mainland China

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    STMicroelectronics

  • YTEOL:

    0

  • Adjustability:

    FIXED

  • Dropout Voltage1-Max:

    0.5 V

  • Dropout Voltage1-Nom:

    0.27 V

  • Input Voltage Absolute-Max:

    40 V

  • Input Voltage-Max:

    31 V

  • Input Voltage-Min:

    5.6 V

  • JESD-30 Code:

    R-PDSO-G8

  • JESD-609 Code:

    e4

  • Length:

    4.9 mm

  • Line Regulation-Max:

    0.025%

  • Load Regulation-Max:

    0.025%

  • Moisture Sensitivity Level:

    3

  • Number of Functions:

    1

  • Number of Outputs:

    1

  • Number of Terminals:

    8

  • Operating Temperature TJ-Max:

    150 °C

  • Operating Temperature TJ-Min:

    -40 °C

  • Output Current1-Max:

    0.2 A

  • Output Voltage1-Max:

    5.1 V

  • Output Voltage1-Min:

    4.9 V

  • Output Voltage1-Nom:

    5 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP8,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Packing Method:

    TUBE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Regulator Type:

    FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR

  • Seated Height-Max:

    1.75 mm

  • Surface Mount:

    YES

  • Technology:

    BICMOS

  • Terminal Finish:

    Nickel/Palladium/Gold (Ni/Pd/Au)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

  • Voltage Tolerance-Max:

    2%

  • Width:

    3.9 mm

L4988D Frequently Asked Questions (FAQs)

  • The maximum input voltage that can be applied to the L4988D is 60V, but it's recommended to keep it below 50V for reliable operation.
  • The output voltage of the L4988D can be calculated using the formula: Vout = (R2 / R1) * (Vref - Vfb), where R1 and R2 are the resistors connected to the FB pin, Vref is the internal reference voltage (2.5V), and Vfb is the feedback voltage.
  • The bootstrap capacitor (Cboot) is used to provide a high-voltage supply to the high-side driver of the L4988D, allowing it to drive the power MOSFETs. It's essential for proper operation and should be chosen according to the datasheet recommendations.
  • The inductor value depends on the input voltage, output voltage, and switching frequency. A good starting point is to use the formula: L = (Vin - Vout) / (ΔI * fsw), where ΔI is the inductor ripple current and fsw is the switching frequency. Then, iterate and optimize based on the specific design requirements.
  • The maximum switching frequency of the L4988D is 500 kHz, but it's recommended to operate at a lower frequency (e.g., 300-400 kHz) to ensure reliable operation and minimize losses.

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L4988D Overview

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About STMicroelectronics

STMicroelectronics (ST) is a global semiconductor company that designs, manufactures, and markets a broad range of integrated circuits (ICs), discrete devices, and other electronic components. STMicroelectronics offers a diverse portfolio of semiconductor products covering a wide range of applications and industries. Their product categories include microcontrollers, analog and mixed-signal ICs, MEMS (Micro-Electro-Mechanical Systems) sensors, power management ICs, RF (Radio Frequency) transceivers, aut

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