ADM1027ARQ-REEL ON Semiconductor, ADM1027ARQ-REEL Datasheet - Page 47

• Manufacturer Part Number: ADM1027ARQ-REEL
• Description: IC REMOTE THERMAL CTRLR 24-QSOP
• Manufacturer: ON Semiconductor
• Series: dBCool®r

Specifications of ADM1027ARQ-REEL

• 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: 0°C ~ 105°C, External Sensor
• Output Type: SMBus™
• Output Alarm: No
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: 0°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 24-QSOP

Register Address
0x5F
0x60
0x61
Bit
<2:0>
<3>
<7:4>
These registers become read-only when the Configuration Register 1 lock bit is set. Any further attempts to write to these registers
will have no effect.
REV. A
Name
FREQ
Reserved
RANGE
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
R/W
Read/Write
Read/Write
Table XVII. TEMP T
Description
Remote 1 T
Local Temperature T
Remote 2 T
These bits control the PWMx frequency.
000 = 11.0 Hz
001 = 14.7 Hz
010 = 22.1 Hz
011 = 29.4 Hz
100 = 35.3 Hz (default)
101 = 44.1 Hz
110 = 58.8 Hz
111 = 88.2 Hz
Reserved for future use.
These bits determine the PWM duty cycle versus temperature slope for automatic
fan control.
0000 = 2
0001 = 2.5
0010 = 3.33
0011 = 4
0100 = 5
0101 = 6.67
0110 = 8
0111 = 10
1000 = 13.33
1001 = 16
1010 = 20
1011 = 26.67
1100 = 32
1101 = 40
1110 = 53.33
1111 = 80
Description
Rev. 3 | Page 47 of 56 | www.onsemi.com
o
o
o
o
C
C
C
C
o
o
o
o
o
o
o
C
C
C
C (default)
C
C
C
RANGE
RANGE
o
o
C
C
o
o
o
C
C
C
RANGE
/PWM 1 Frequency
/PWM 3 Frequency
–47–
RANGE
/PWM Frequency Registers
/PWM 2 Frequency
Power-On Default
0xC4
0xC4
0xC4
ADM1027