MBI6673 Step-down, 5A High Power LED Driver SIMO 20-55 Volt

07 June 2023

Constant current driver

MBI6673 is constant current step-down LED driver IC which drives N-MOS,ep-down LED driver IC which drives N-MO, and besides, it could control individually red, green, blue and white LED dimming with SIMO configuration. Because MBI6673 is controller, by choosing the type of N-MOSFET, the fixtures could easily drive 3A or even more than 3A current loading with MBI6673. Through Macroblock’s outstanding technique, the bootstrap schottky diode from VCCH to VBT to help users to save BOM cost. In addition, with low current sensing reference voltage, 100mV, it could help customers to set up wide output current range based on application scope.
Through hysteretic pulse frequency modulation, users can design MBI6673 application circuit without external components and MBI6673 has fast transient response. When it comes to current sensing accuracy, MBI6673 could achieve high current accuracy with peak current detection and moreover, with ACC function MBI6673 could avoid current inconsistency due to tolerance of external components, especially inductors. With respect to dimming resolution, MBI6673 could provide great dimming linearity and 16 bit resolution by shunt dimming technique, realized by external N-MOSFET connected to LED in parallel. In the end, according to input voltage range from 9V to 55V, MBI6673 is not only suitable for stage lighting application but also ideal for automotive alarm lighting.

Product introduction

 

Datasheet MBI6673

 

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