MAX31785ETL+ Maxim Integrated Products, MAX31785ETL+ Datasheet - Page 44
MAX31785ETL+
Manufacturer Part Number
MAX31785ETL+
Description
Board Mount Temperature Sensors 6Ch Intelligent Fan Controller
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX31785ETL.pdf
(48 pages)
Specifications of MAX31785ETL+
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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6-Channel Intelligent Fan Controller
44
If bit 6 in FAN_CONFIG_1_2 is set to zero, the FAN SPEED STEP sets the fan PWM duty cycle at each temperature step
breakpoint. The valid duty cycle range is 0 to 100 (inclusive). Any values greater than 100 (decimal) result in 100% PWM
duty cycle being generated, and any values less than 0 (decimal) result in 0% PWM duty cycle.
If bit 6 in FAN_CONFIG_1_2 is set to 1, the FAN SPEED STEP sets the fan target speed (in RPM) at each temperature
step breakpoint. The valid fan speed range is 0 to 32,767 (inclusive).
Figure 6. Fan Lookup Table (LUT) Format
PWM = 0% DUTY CYCLE
FAN PWM DUTY CYCLE
FAN SPEED (IN RPM)
DESIRED FAN
DUTY CYCLE
MAXIMUM
OR SPEED
OR
S7
S6
S5
S4
S3
S2
S1
S0
HYSTERESIS
THERMAL
T0
FAN SPEED STEP: Fan PWM Duty Cycle or Fan Speed Setting
T1
T2
(FROM ONE OR MORE TEMP SENSORS)
NORMALIZED TEMPERATURE
T3
T4
T5
T6
T7
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