Buck boost led driver maxim

 · Maxim Integrated Products introduces the MAX, a high-side MOSFET driver for high voltage applications. This device provides a low-cost solution for HB (high-brightness) LED designs that require a buck or buck-boost topology, but lack the requisite high-side MOSFET driver.  · Buck-Boost Led Drivers research estimates micro-markets and takes a similar look at the various growth trends, future prospects, and regulations that will regulate the industry in the upcoming years. The MAXA/MAXB are fully synchronous LED drivers that provide constant output current to drive high-power LEDs. The MAXA/MAXB integrate two 60mΩ power MOSFETs for synchronous operation, minimizing external components. Flexible configuration supports buck, inverting buck-boost, and boost conversion.

For buck-boost or boost mode, connect a kΩ resistor from V CC to the PWMFRQ pin. Figure 5. Integrated, flexible converter in buck-boost mode. Flexible Dimming. The LED driver offers an analog dimming-control input pin (REFI) while the voltage at REFI sets the LED current level linearly from zero up to maximum when V REFI = V. The V to 40V input voltage range of the boost controller is ideal for automotive applications, and acts as a pre-boost power supply for the second-stage buck LED controller. The synchronous boost is a current-mode controller that can be be paralleled with another device to provide higher output power. The hysteretic-buck LED driver is a popular, easily implemented current source for situations where the voltage across the LED string is lower than the input voltage. By rearranging the external components, it is practical to switch this topology from buck mode to boost mode, to support LED strings where the sum of the diode drops is greater.

semiconductor technology, various IC component suppliers are capable of Technology LTC, Synchronous Buck Boost High Power White LED Driver. It is. By Maxim | Tuesday, Janu. shares. This reference design is for a buck-boost LED driver. The MAX current-mode high-brightness LED driver is. The MAX from Maxim Integrated is a synchronous 4-switch buck-boost LED driver controller. The controller regulates the LED current for LED string.