MIC4812 Datasheet, PDF (9/12 Pages) Micrel Semiconductor – High Current 6 Channel Linear WLED Driver with DAM™ and Ultra Fast PWM™ Control

Micrel Inc.
MIC4812
Figure 6. PWM Signal at 1% Duty Cycle (I_avg = 1mA)
Figure 9. PWM Signal at 80% Duty Cycle (I_avg = 80mA)
Figure 7. PWM Signal at 20% Duty Cycle (I_avg = 20mA)
Figure 10. PWM Signal at 100% Duty Cycle (I_avg = 100mA)
Input Capacitor
The MIC4812 is a high-performance, high bandwidth
device. Stability can be maintained using a ceramic input
capacitor of 2.2µF. Low-ESR ceramic capacitors provide
optimal performance at a minimum amount of space.
X5R or X7R dielectrics are recommended for the input
capacitor. Y5V dielectrics lose most of their capacitance
over temperature and are therefore, not recommended.
Figure 8. PWM Signal at 50% Duty Cycle (I_avg = 50mA)
January 2011
9
M9999-010511-A