Accumulating new LED DC/DC converter MBI6651

Cumulative Technology launched a maximum output current of 1 amps, and the efficiency of up to 93% of the constant current, Buck DC/DC Converter - MBI6651. MBI6651 at rated input voltage, only 0.45 ohm low on resistance, can effectively reduce the power consumption on the IC, and then solve the problem of high power LED heat and improve system efficiency. In order to limit the inrush current generated when the power supply is turned on, the built-in MBI6651 device can limit the peak current to 1.15 times the current setting and increase the stability of the system.

In addition, MBI6651 can provide lighting applications required uniform brightness, the accuracy of the output current variation effectively controlled at the maximum value of + 5%. MBI6651 is an effective scheme of efficiency, stability and accuracy are designed to provide LED lighting, decorative lighting (MR16), street lighting, advertising lighting, automotive lighting applications such as the best choice in the design and production.

MBI6651 uses innovative Hysteretic PFM technology, in addition to avoid interference to the audio, and the switching frequency can vary with the load current, in light and heavy load conditions can achieve efficiency optimization. Such as when the input voltage 12V, output current of 1 A under the condition of lighting up to 3 LED, the conversion efficiency of up to 93%, significantly improve the efficiency of LED lighting system.

MBI6651 input voltage range from 9 V to 36 V, output current range from 350mA to 1A. The whole range of protection, such as when the IC temperature exceeds 165 degrees, will touch the overheating protection and close the output current, when the temperature dropped to 135 degrees, the IC will output current, so the system can operate stably in large current through the. Other protection mechanisms such as under voltage lockout protection (UVLO), open circuit and short circuit protection, can improve the stability and security of operation.

In addition to the use of TO-252 packages for customers, exquisite design and high heat dissipation requirements, MBI6651 SOT-23 and MSOP-8 two package options, and requires only four external components, can reduce the PCB area demand, reduce the cost.