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MBI6660 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 5 external components. By hysteretic PFM control scheme, MBI6660 omits the external compensation design.
The output current of MBI6660 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 on. MBI6660 also features under voltage lock out (UVLO), over temperature protection (OTP), and over current protection (OCP) to guard the system to be robust and keep the IC away from being damaged resulting from LED open-circuited, short-circuited and other abnormal events.
Additionally, to ensure the system reliability, MBI6660 builds thermal protection (TP) function inside. This function protects IC from overheating in various application conditions. MBI6660 provides thermal-enhanced packages as well to handle power dissipation more efficiently.MBI6660 is available in TO-252-5L and SOP-8L packages.
MBI6660 Specification
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ItemsSpec.Content
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01TopologyBuck / Hysteretic PFM
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02Max. Output Current per Channel500mA
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03Max. Sustaining Voltage75V
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04Supply Voltage9~60V
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05Switch on Resistance0.35Ω
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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 PackageTO252
SOP8 -
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
