I'm looking for a datasheet of this chip ER=4B. It seems that it's some DC regulator. It is placed on a logic board of an LCD panel HM236WU1-100. It is powered by 5V. The second line imprinted on the chip E1J or N18 is probably manufacture date.

Thank you

LCD logic board

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  • \$\begingroup\$ Too many pins for a DC regulator I'd say... More like some custom IC/ASIC \$\endgroup\$
    – Eugene Sh.
  • \$\begingroup\$ Might be a specialised backlight driver? \$\endgroup\$
    – DamienD
  • \$\begingroup\$ Can this be a regulator with many outputs with different voltages? I think it produces different voltages for an LCD like VGH (+27V) for example. \$\endgroup\$
    – Tmk

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