LTC3577 AND LTC3577-1
This can only be changed when the “PWM” “LED MODE”
option button is selected.
PWM Numerator
vertical slider is used to select a PWM
numerator value. The PWM numerator is divided by the
PWM denominator to determine the PWM duty cycle.
This can only be changed when the “PWM” “LED MODE”
option button is selected.
PWM Denominator
vertical slider is used to select a
PWM denominator value. The PWM denominator is used
in conjunction with the PWM numerator to determine the
PWM duty cycle and with the PWM clock speed to de-
termine the PWM frequency. This can only be changed
when the “PWM” “LED MODE” option button is selected.
STATUS
indicators display the charge, NTC, and power
status determined by the LTC3577 status register. If an
acknowledge was not received, the status indicators will
display “N/A”. This may occur when DVCC is missing or
during the PDN state.
Figure 3.
LTC3577 Control Window
7
Summary of Contents for Demo Circuit 1402A
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