SH3100IMTR SEMTECH [Semtech Corporation], SH3100IMTR Datasheet - Page 68

• Manufacturer Part Number: SH3100IMTR
• Description: Supervisory IC with I2C Interface and PWM
• Manufacturer: SEMTECH [Semtech Corporation]

© 2006 Semtech Corp.
PDM Mode
An alternative to Pulse Width Modulation (PWM) is Pulse
Density Modulation, or PDM. This produces the maximum
number of pulses while maintaining the average duty
cycle, thereby requiring less smoothing capacitance on
the PWM output to yield the same ripple. Both automatic
fan control mode and Manual PWM control mode have
the option of running PDM instead of PWM by setting the
PDM/PWM bit in the DutyCycleStepSize register.
POWER MANAGEMENT
Functional Descriptions
(continued)
68
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SH3100