BL0202C BL0202B BL0200C Datasheet

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • Document Archive
    Administrator
    • Feb 2024
    • 115471
    • -
    #1

    BL0202C BL0202B BL0200C Datasheet

    The BL0202C BL0202B BL0200C are 2ch output LED driver IC for LED backlight, and it can do dimming to 0.02% by external PWM signal.

    This IC realizes a high efficiency by the boost convertor control that absorbs variability on VF.

    The product easily achieves high cost-performance LED drive system with few external components and enhanced protection functions.

    Features and Benefit

    Boost Convertor

    ● Current-Mode type PWM Control
    ● PWM frequency is 100 kHz or 200 kHz
    ● Maximum On Duty is 90%

    LED current control

    ● Individual PWM Dimming Control
    ● Analog Dimming
    ● High contrast ratio is 1 / 5000
    ● Accuracy of Reg output voltage is ± 1.5% or ± 2%

    Protection functions

    ● Enable Function of IC (BL0202B, BL0202C)
    ● Error Signal Output (BL0200C)
    ● Overcurrent Protection for Boost Circuit (OCP)
    - Pulse-by-pulse
    ● Overcurrent Protection for LED Output (LED_OCP)
    - Pulse-by-pulse
    ● Overvoltage Protection (OVP) - Auto restart
    ● Output Open/Short Protection - Auto restart
    ● Thermal Shutdown (TSD) - Auto restart

    Applications

    ● LED backlights
    ● LED lighting​
    Attached Files
    User submitted datasheet, schematic, boardview, service manual, firmware, bios, & software.
    Tags: None
    Previous template Next

    Related Topics

    Collapse
    • howardc64
      Vizio E55-F1 dark backlight zones. LED failure or Dimming Zone Driver?
      by howardc64
      Problem

      Fixing a dimming zone TV with LEDs not lighting up. Dimming zone circuit introduces added variable to diagnose LED and/or Dimming Zone Driver board? Some 1/2 rows of LEDs appears to be out in active dimming zone off AND some brightness flickering with active dimming zone high while playing changing video



      Model & Board Pics



      Conflicting Spec

      Vizio indicate this TV has 10 dimming zones. However, LED strips and Zoned light driver connector suggest 12

      https://www.shopjimmy.com/vizio-gj-2k1...
      10-10-2024, 01:16 PM
    • nouriassafi
      PWM Dimming Control Signal low voltage drop LA-E841P
      by nouriassafi
      JEDP pinout LA-E841P:
      4,5 MLO (Main-Lane)
      7,8 AUX (Auxiliary Channel)
      9,10 VCCS (Power Supply +3.3V)
      11 HPD (Hot Plug Detect)
      15 LED_EN (BL_ENABLE Signal of LED Converter)
      16 LED_PWM (PWM Dimming Control Signal)
      19,20 LCD_VCCS (BL Power)

      Have an issue with pin 16 (PWM Dimming Control Signal): low voltage drop!
      Any help would be much appreciated!
      06-19-2022, 08:32 PM
    • jm1234
      Reolink RLC-410-5MP - buck convertor
      by jm1234
      Hi,
      it's a PoE camera and it stopped working. Using thermal image I identified failing component U22 marked as 16AF which seems to be buck convertor TI https://www.alldatasheet.net/datashe...62569DBVR.html. I took it out and It is inteed shorted on the output. However, after I took it out, the resistance between the output pads (on the board) still shows 190ohm, is that bit low?
      Another issue is, seems to me I must be missing one of the tiny resistors R810 that should make up the voltage devider for the buck convertor. Honestly I did this months ago, I cannot...
      07-14-2025, 04:30 AM
    • shouri
      Dell latitude e5490 auto restart
      by shouri
      Hi guys, can someone help me?

      I have an issue with laptop dell latitude e5490 that auto restart when arrive at certain point in loading windows.
      Board model is dm70 la-f401p rev:1.0 2017-09-20.

      At first, the issue is sometime ssd sata 2.5 not detected. i already try another cable, at certain point, it ok using old cable (i mean sata cable here).
      After a few days test, is seems ok.

      Days later, another issue come, that is auto restart when certain point in loading windows. i already test another ssd, another ram, another sata ribbon, still same....
      12-10-2024, 09:27 PM
    • Yanleb
      LG 60PK550 Logic Control Board EBR63450301
      by Yanleb
      Hi all, I just want to share the repair of my 60PK550-UA TV set.

      The TV set was powering on, just no image. After verification, nothing wrong on the YSus or ZSus boards. Nothing wrong on the main board either.

      But I noticed that the LED was not flashing on the Logic Control Board. This is an EBR63450301. The LED is supposed to flash even with all the flat cables disconnected, with only the power cable attached.

      All the voltages measured at the electrolytic capacitors on the board were good. From top left to bottom right:
      C57: 3.30V
      C61:...
      07-20-2023, 12:38 AM
    • Loading...
    • No more items.
    Working...