ADM1030ARQ-REEL7 ON Semiconductor, ADM1030ARQ-REEL7 Datasheet - Page 26

• Manufacturer Part Number: ADM1030ARQ-REEL7
• Description: IC SNSR TEMP/FAN PWM CTRL 16QSOP
• Manufacturer: ON Semiconductor

Specifications of ADM1030ARQ-REEL7

• Rohs Status: RoHS non-compliant
• Function: Fan Control, Temp Monitor
• Topology: ADC, Comparator, Multiplexer, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: 0°C ~ 100°C, External Sensor
• Output Type: SMBus™
• Output Alarm: Yes
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: 0°C ~ 100°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP

ADM1030
Bit
<2:0>
<5:3>
<7:6>
Bit
<3:0>
<7:4>
Bit
<7>
<6:5>
<4:2>
<1>
<0>
Fan 1 Spin-up
PWM 1 Frequency
Speed Range
Normal/Min Spd 1
Ramp Rate
ADC Sample Rate
Name
Name
Unused
Name
Spin-Up Disable
Unused
Fan Filter En
Table XIX. Register 0x20 Fan Characteristics Register 1 Power-On Default = 5DH
Table XX. Register 0x22 Fan Speed Config Register Power-On Default = 05H
Table XXI. Register 0x23 Fan Filter Register Power-On Default = 50H
R/W
Read/Write
Read/Write
Read/Write
R/W
Read/Write
R/W
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Rev. 2 | Page 26 of 29 | www.onsemi.com
These bits contain the Fan Spin-up time to allow the fan to overcome its own
These bits allow programmability of the nominal PWM output frequency
These bits contain the Speed Range, N.
This nibble contains the normal speed value for the fan. When in Automatic
When set to 1, disables fan spin-up.
These bits set the ramp rate for the PWM output.
These bits set the sampling rate for the ADC.
Setting this bit to 1 enables filtering of the PWM_OUT signal.
Description
inertia.
000 = 200 ms
001 = 400 ms
010 = 600 ms
011 = 800 ms
100 = 1 sec
101 = 2 secs (Default)
110 = 4 secs
111 = 8 secs
driving the fan. (Default = 31 Hz.)
000 = 11.7 Hz
001 = 15.6 Hz
010 = 23.4 Hz
011 = 31.25 Hz (Default)
100 = 37.5 Hz
101 = 46.9 Hz
110 = 62.5 Hz
111 = 93.5 Hz
00 = 1
01 = 2
10 = 4
11 = 8
Description
Fan Speed Control Mode, this nibble contains the minimum speed at which
the fan will run. Default is 0x05 for 33% PWM duty cycle. (See Table VII.)
Unused.
Description
00 = 1
01 = 2
10 = 4
11 = 8
000 = 87.5 Hz 0.0625 Updates/sec
001 = 175 Hz 0.125 Updates/sec
010 = 350 Hz 0.25 Updates/sec
011 = 700 Hz 0.5 Updates/sec
100 = 1.4 kHz (Default) 1 Update/sec
101 = 2.8 kHz 2 Updates/sec
110 = 5.6 kHz 4 Updates/sec
111 = 11.2 kHz 8 Updates/sec
Unused.
–26–
(Fail Speed = 2647 RPM)
(Fail Speed = 1324 RPM)
(Fail Speed = 662 RPM)
(Fail Speed = 331 RPM)
REV. A