ADT7463ARQ-REEL7 ON Semiconductor, ADT7463ARQ-REEL7 Datasheet - Page 35

• Manufacturer Part Number: ADT7463ARQ-REEL7
• Description: IC SENSOR TEMP FAN-CTRL 24QSOP
• Manufacturer: ON Semiconductor
• Series: dBCool®r

Specifications of ADT7463ARQ-REEL7

• Rohs Status: RoHS non-compliant
• Function: Fan Control, Temp Monitor
• Topology: ADC, Comparator, Fan Speed Counter, Multiplexer, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: -40°C ~ 120°C, External Sensor
• Output Type: SMBus™
• Output Alarm: No
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 120°C
• Mounting Type: Surface Mount
• Package / Case: 24-QSOP

Register Address
0x30
0x31
0x32
These registers reflect the PWM duty cycle driving each fan at any given time. When in automatic fan speed control mode, the ADT7463 reports the PWM
duty cycles back through these registers. The PWM duty cycle values vary according to temperature in automatic fan speed control mode. During fan startup,
these registers report back 0x00. In software mode, the PWM duty cycle outputs can be set to any duty cycle value by writing to these registers.
Register Address
0x33
0x34
0x35
These registers set the target operating point for each temperature channel when the dynamic T
The fans being controlled adjust to maintain temperature about an operating point.
*These registers become read-only when the Configuration Register 1 Lock bit is set to 1. Any subsequent attempts to write to these registers fail.
REV. C
Read/Write
Read/Write
Read/Write
R/W*
Read/Write
Read/Write
Read/Write
R/W
Table VIII. Current PWM Duty Cycle Registers (Power-On Default = 0xFF)
Table IX. Operating Point Registers (Power-On Default = 0x64)
PWM1 Current Duty Cycle (0% to 100% Duty Cycle = 0x00 to 0xFF)
PWM2 Current Duty Cycle (0% to 100% Duty Cycle = 0x00 to 0xFF)
PWM3 Current Duty Cycle (0% to 100% Duty Cycle = 0x00 to 0xFF)
Remote 1 Operating Point Register (Default = 100�C)
Local Temp Operating Point Register (Default = 100�C)
Remote 2 Operating Point Register (Default = 100�C)
Description
Description
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control feature is enabled.
ADT7463