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MBI6673 is constant current step-down LED driver IC which drives N-MOS, 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. 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. With respect to dimming resolution, MBI6673 could provide great dimming linearity and 12-bit resolution at 4KHz dimming frequency by shunt dimming technique, realized by external N-MOSFET connected to LED in parallel.
MBI6673 Specification
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ItemsSpec.Content
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01TopologySingle lnductor Multi Output / PFM
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02Max. Output Current per ChannelBy External MOSFET
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03Supply Voltage9~55V
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04Dimming MethodShunt Dimming
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05Protection - LED Open
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06Protection - LED Short
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07Protection - Thermal Shutdown
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08Protection - OVP
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09Protection - UVLO
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10Protection - OCP
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11RoHS Compliant PackageTSSOP24
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12Major ApplicationsHigh Power LED Lighting, stage light
