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MBI6655 is a step-down constant-current high-brightness LED driver to provide a cost-effective design solution for interior/exterior illumination applications. It is designed to deliver constant current to light up high power LED with minimum 5 external components. With hysteretic PFM control scheme, MBI6655 eliminates external compensation design and simplifies the PCB design.
The output current of MBI6655 can be programmed by an external resistor and dimmed via pulse width modulation (PWM) through DIM pin. MBI6655 features complete protection design to handle faulty situations. The start-up function limits the inrush current while the power is switched on. Over temperature protection (OTP), and over current protection (OCP) guard the system to be robust and keep the driver away from being damaged which results from LED open-circuited, short-circuited and other abnormal events.
MBI6655 provides thermal-enhanced SOT-89 and SOP-8 packages as well to handle power dissipation efficiently.
MBI6655 Specification
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ItemsSpec.Content
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01TopologyBuck / Hysteretic PFM
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02Max. Output Current per Channel1A
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03Max. Sustaining Voltage40V
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04Supply Voltage6~36V
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05Switch on Resistance0.3Ω
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06Common Anode
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07Dimming MethodDigital
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08Protection - LED Open
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09Protection - LED Short
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10Protection - Thermal Shutdown
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11Protection - Start-Up
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12Protection - UVLO
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13Protection - OCP/OCL
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14Protection - Themal Fold-back
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15Protection - OTP Error FLAG
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16Protection - OCP Error FLAG
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17Soft Start-up
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18RoHS Compliant PackageSOP8
SOT89 -
19Major ApplicationsMR11, MR16, flood light, PAR light, wall wash light, stage light, panel light, emergency lighting, street light, tunnel lighting, high power LED lighting, automotive lighting
