MIC2287
MIC2287
Micrel, Inc.
1.
2MHz PWM White LED Driver with OVP in 2mm × 2mm MLF™ and Thin SOT-23
General Description
The MIC2287 is a 1.
2MHz pulse width modulated (PWM), boost-switching
regulator that is optimized for constantcurrent, white LED driver applications.
With a maximum output voltage of 34V and a switch current of over 500mA, the MIC2287 easily drives a string of up to 8 white LEDs in series, ensuring uniform brightness and eliminating several ballast resistors.
The MIC2287 implements a constant frequency, 1.
2MHz PWM control scheme.
The high frequency PWM operation saves board space by reducing external component sizes.
The added benefit of the constant frequency PWM scheme ...