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The MBI6652 is a high efficiency, constant current and step-down DC/DC converter. It is designed to deliver constant current to light up high power LED with only 4 external components. With hysteretic PFM control scheme, MBI6652 improves the efficiency of light loading. The output current of MBI6652 can be programmed by an external resistor and LED dimming can be controlled via pulse width modulation (PWM) through DIM pin. In addition, the start-up function limits the inrush current while the power is switch on. The MBI6652 also features over temperature protection, LED open-circuit protection and LED short-circuit protection to protect IC from being damaged.
Additionally, to ensure the system reliability, the MBI6652 builds thermal protection (TP) function inside. This function protects IC from overheating (165°C) in various application conditions. MBI6652 provides thermal- enhanced packages as well to handle power dissipation more efficiently. MBI6652 is available in SOT-23-6Land MSOP-8L packages.
MBI6652 Specification
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ItemsSpec.Content
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01TopologyBuck / Hysteretic PFM
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02Max. Output Current per Channel750mA
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03Max. Sustaining Voltage32V
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04Supply Voltage6~30V
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05Switch on Resistance0.45Ω
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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 PackageMSOP8
SOT23 -
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
