Please enter a minimum 3 letters or numbers
Technical Content
Part Image

L4985B - STMicroelectronics

Description: CCM PFC controller with High Voltage start-up

Download L4985B Model
Schematic
symbols
Schematic symbol is unavailable for download
PCB
footprints
PCB footprint is unavailable for download
3D
models
3D model is unavailable for download
Send part feedback
Symbol
L4985B - STMicroelectronics - PCB symbol
click to zoom
PCB Footprints
L4985B - STMicroelectronics PCB footprint - Small Outline Packages - Small Outline Packages - SO-8 batwing1-1
click to zoom
3D Models
L4985B - STMicroelectronics - 3D model - Small Outline Packages - SO-8 batwing1-1
click to zoom

L4985B Details

  • Manufacturer Part Number:

    L4985B

  • Brand Name:

    STMicroelectronics

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    SOP-8

  • Country Of Origin:

    Mainland China

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Factory Lead Time:

    25 Weeks

  • Manufacturer:

    STMicroelectronics

  • YTEOL:

    7

  • Analog IC - Other Type:

    POWER FACTOR CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    24.5 V

  • Input Voltage-Min:

    10 V

  • Input Voltage-Nom:

    15 V

  • JESD-30 Code:

    R-PDSO-G8

  • JESD-609 Code:

    e3

  • Length:

    4.9 mm

  • Moisture Sensitivity Level:

    3

  • Number of Functions:

    1

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -25 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP8,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Peak Reflow Temperature (Cel):

    260

  • Seated Height-Max:

    1.75 mm

  • Supply Current-Max (Isup):

    5.5 mA

  • Surface Mount:

    YES

  • Switcher Configuration:

    BOOST

  • Switching Frequency-Max:

    142 kHz

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

  • Width:

    3.9 mm

L4985B Frequently Asked Questions (FAQs)

  • The maximum input voltage that can be applied to the L4985B is 30V, but it's recommended to keep it below 28V to ensure reliable operation and to prevent damage to the internal components.
  • The output voltage of the L4985B can be calculated using the formula: Vout = Vref x (1 + R2/R1), where Vref is the internal reference voltage (2.5V), R1 and R2 are the resistors connected to the FB pin. The output voltage range is from 1.25V to 28V.
  • The EN (Enable) pin is used to turn the regulator on or off. When the EN pin is pulled high (above 2.5V), the regulator is enabled, and when it's pulled low (below 0.8V), the regulator is disabled. This pin can be used to implement power sequencing or to reduce power consumption in standby mode.
  • The inductor value depends on the output current, switching frequency, and input voltage. A general rule of thumb is to choose an inductor with a value between 10uH and 47uH. A higher inductor value can reduce the ripple current, but it may also increase the size and cost of the component.
  • The maximum output current that the L4985B can deliver is 2A, but it's recommended to keep it below 1.5A to ensure reliable operation and to prevent overheating.

Trust Checks

This model has been built in collaboration with the manufacturer.
Manufacturer Collaborated
This model has been verified by system checks.
System Verified
This model has been reviewed by community users.
Community Approved
Sponsored

L4985B Overview

Use the download button to access the L4985B schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like L4985, or try a keyword search, such as Switching Regulator or Controllers

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

Parts related to L4985B

Showing 0 results

Part Image

← Prev Next →
About Us Contact Us Terms of Service Do not sell or share my personal information Privacy Policy Digital Services Act Library Loader Twitter LinkedIn

All content Copyright © 2020, Supplyframe.com. All rights reserved. Back to top ↑