MIC3287 PWM White LED Drivers

Microchip MIC3287 PWM White LED Drivers are a 1.2MHz pulse-width modulated (PWM) step-up switching regulator that is optimized for constant current white LED driving applications. With a maximum output voltage of 24V and a switch current of over 350mA, the MIC3287 drives a string of up to four white LEDs in series, ensuring uniform brightness and eliminating several ballast resistors. The MIC3287 implements a constant frequency 1.2MHz PWM current-mode control scheme. The high-frequency PWM operation saves board space by reducing external component sizes. The added benefit of the constant frequency PWM control scheme, as opposed to variable frequency control schemes, is much lower noise and input ripple injected back to the battery source. To optimize efficiency, the feedback voltage is set to only 250mV. The MIC3287 is also available with a maximum of 24V over-voltage protection.

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Microchip Technology CI de controladores de iluminación LED 2x2mm White LED Driver w/ 24V OVP
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5.757En existencias
MouseReel Disponible
Mín.: 1
Múlt.: 1
Bobina: 3.000

1 Output Boost 350 mA SOT-23-6 6.5 V 2.8 V 1.2 MHz 36 V - 40 C + 125 C PWM Dimming, Constant Current Reel, Cut Tape, MouseReel
Microchip Technology CI de controladores de iluminación LED 2x2mm White LED Driver w/ 24V OVP
Hoja de datos
4.997En existencias
MouseReel Disponible
Mín.: 1
Múlt.: 1
Bobina: 3.000

1 Output Boost 350 mA SOT-23-5 6.5 V 2.8 V 1.2 MHz 36 V - 40 C + 125 C PWM Dimming, Constant Current Reel, Cut Tape, MouseReel