Topic: Technology Accumulation Technology introduces a current-current, step-down DC/DC converter, MBI6651, with a maximum output current of 1 amp and an efficiency of 93%. The MBI6651 requires only a low on-resistance of 0.45 ohm at the rated input voltage, which effectively reduces the power dissipation generated on the IC, thereby solving the problem of high-power LED heat and improving system efficiency. In order to limit the surge current generated when the power is turned on, the MBI6651's built-in 6.? device can limit the peak current to 1.15 times the set current, increasing system stability. In addition, the MBI6651 provides the uniform illumination brightness required for lighting applications, effectively controlling the output current accuracy variation to within ±5% of the maximum value. MBI6651 is an effective solution for efficiency, stability and precision designed for LED lighting. It provides the best choice for design and production of decorative lighting (MR16), street lighting, billboard lighting, automotive lighting and other applications. .
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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 the input voltage is 12 volts and the output current is 1 amp, 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 volts to 36 volts and an output current range of 350 mA to 1 amp. 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 and high heat dissipation requirements, MBI6651 offers SOT-23 and MSOP-8 package options, and only requires four external components to reduce PCB area requirements and effectively reduce cost.
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 the input voltage is 12 volts and the output current is 1 amp, 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 volts to 36 volts and an output current range of 350 mA to 1 amp. 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 and high heat dissipation requirements, MBI6651 offers SOT-23 and MSOP-8 package options, and only requires four external components to reduce PCB area requirements and effectively reduce cost.
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