The MBI6651 is a constant current step-down DC/DC converter with a maximum drive output current of 1A and an efficiency of up to 93%.
In order to solve the problem of high-power LED heat, MBI6651 requires only 0.45 ohm low on-resistance at rated input voltage, which effectively reduces the power consumption generated on the IC and improves system efficiency. The surge current, built-in starter, limits the peak current to 1.15 times the set current.
Since lighting applications require uniform illumination, the MBI6651 effectively controls output current differences up to within ±5%. MBI6651 is an effective solution for thermal management and high stability designed for LED lighting. It is the best choice for design and production of decorative lighting (MR16), street lighting, billboard lighting, automotive lighting and other lighting.
The MBI6651 utilizes the innovative Hysteretic PFM technology, which not only avoids interference with the audio, but also changes the switching frequency with load current, and achieves efficiency optimization under light and heavy load conditions. For example, when three LEDs are lit under the condition of input voltage 12V and output current 1 A, the conversion efficiency is as high as 93%, which significantly improves the operating efficiency of the LED lighting system.
The MBI6651 has an input voltage range of 9 V to 36 V and an output current range of 350 mA to 1 A. It has built-in comprehensive protection measures. For example, when the temperature of the IC exceeds 165 °C, it will touch the overheat protection and turn off the output current. When the temperature drops to 135 °C, the IC will re-output the current, so the system can pass the large current. Stable operation. Other protection mechanisms such as undervoltage lockout protection (UVLO), open circuit and short circuit protection, etc., can improve stability and safety during operation.
In addition to the TO-252 package, in order to meet the customer's ingenious design requirements, the MBI6651 offers SOT-23 and MSOP-8 package options, and requires only four external components to reduce PCB area requirements and reduce costs.
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