com MIC3287
Micrel, Inc.
MIC3287
1.
2MHz PWM White LED Driver with OVP in Thin SOT-23 and 2mm x 2mm MFL™
General Description
The MIC3287 is 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 4 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 cons...