參數(shù)資料
型號: ADM1030ARQZ-RL7
廠商: ON Semiconductor
文件頁數(shù): 27/30頁
文件大?。?/td> 327K
描述: IC SNSR TEMP/FAN PWM CTRL 16QSOP
產(chǎn)品變化通告: MFG CHG Notification ADI to ON Semi
Product Obsolescence 11/Feb/2009
標(biāo)準(zhǔn)包裝: 1,000
功能: 風(fēng)扇控制,溫度監(jiān)控器
傳感器類型: 內(nèi)部和外部
感應(yīng)溫度: 0°C ~ 100°C,外部傳感器
精確度: ±1°C,±1°C(最小值)
拓?fù)洌?/td> ADC,比較器,多路復(fù)用器,寄存器庫
輸出類型: SMBus?
輸出警報:
輸出風(fēng)扇:
電源電壓: 3 V ~ 5.5 V
工作溫度: 0°C ~ 100°C
安裝類型: 表面貼裝
封裝/外殼: 16-SSOP(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 16-QSOP
包裝: 帶卷 (TR)
ADM1030
http://onsemi.com
27
Table 23. REGISTER 0X20 FAN CHARACTERISTICS REGISTER 1 POWER-ON DEFAULT = 5DH
Bit
Name
R/W
Description
<2:0>
Fan 1 Spin-up
Read/Write
These bits contain the Fan Spin-up time to allow the fan to overcome its own 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
<5:3>
PWM 1 Frequency
Read/Write
These bits allow programmability of the nominal PWM output frequency 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
<7:6>
Speed Range
Read/Write
These bits contain the Speed Range, N.
00 = 1 (Fail Speed = 2647 RPM)
01 = 2 (Fail Speed = 1324 RPM)
10 = 4 (Fail Speed = 662 RPM)
11 = 8 (Fail Speed = 331 RPM)
Table 24. REGISTER 0X22 FAN SPEED CONFIG REGISTER POWER-ON DEFAULT = 05H
Bit
Name
R/W
Description
<3:0>
Normal/Min Spd 1
Read/Write
This nibble contains the normal speed value for the fan. When in Automatic 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 11.)
<7:4>
Unused
Unused
Table 25. REGISTER 0X23 FAN FILTER REGISTER POWER-ON DEFAULT = 50H
Bit
Name
R/W
Description
<7>
Spin-up Disable
Read/Write
When set to 1, disables fan spin-up.
<6:5>
Ramp Rate
Read/Write
These bits set the ramp rate for the PWM output.
00 = 1
01 = 2
10 = 4
11 = 8
<4:2>
ADC Sample Rate
Read/Write
These bits set the sampling rate for the ADC.
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
<1>
Unused
Read/Write
Unused
<0>
Fan Filter En
Read/Write
Setting this bit to 1 enables filtering of the PWM_OUT signal.
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