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MT7812 - High Efficiency High Precision Buck Constant Current Driver

General Description

MT7812 is a high precision LED constant current control chip operating at critical conduction mode (CRM) with zero current switched-on and peak current switched-off.

It’s mainly targeted for non-isolated buck LED power systems.

Key Features

  • Critical Conduction Mode, not sensitive to the inductance.
  • Up to 95% of efficiency.
  • Highly accurate constant LED current.
  • Cycle-by-cycle current limitation.
  • LED Short Circuit Protection.
  • LED Over Voltage Protection.
  • Leading edge blanking technique.
  • Under-voltage lockout (UVLO) protection.
  • Over temperature protection.
  • SOP8 package MT7812 embedded with internal power MOSFET, simplify the peripheral circuits. Low BOM cost is achieved. MT7812 has.

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Datasheet Details

Part number MT7812
Manufacturer Maxic Technology
File Size 544.41 KB
Description High Efficiency High Precision Buck Constant Current Driver
Datasheet download datasheet MT7812 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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MT7812 High Efficiency High Precision Buck Constant Current Driver DESCRIPTION MT7812 is a high precision LED constant current control chip operating at critical conduction mode (CRM) with zero current switched-on and peak current switched-off. It’s mainly targeted for non-isolated buck LED power systems. Critical conduction mode ensures that the MT7812 turns on the internal power MOSFET when the inductor current reaches zero, reducing the power MOSFET switching loss, the system achieves more than 95% efficiency. With critical conduction mode, and the line compensation, MT7812 outputs high accuracy LED current, and further achieves good line regulation and load regulation.