參數(shù)資料
型號(hào)： ADT7462ACPZ-500RL7
廠商： ON SEMICONDUCTOR
元件分類(lèi)： 溫度/濕度傳感器
英文描述： DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 4Cel, SQUARE, SURFACE MOUNT
封裝： 5 X 5 MM, LFCSP-32
文件頁(yè)數(shù)： 36/88頁(yè)
文件大小： 836K
代理商： ADT7462ACPZ-500RL7
ADT7462
Rev. 2 | Page 41 of 88 | www.onsemi.com
Programming the PWMMAX Register
The PWMMAX register (0x2C) is an 8-bit register that allows the
maximum PWM duty cycle for the outputs to be configured
anywhere from 0% to 100%. This allows the maximum PWM
duty cycle to be set in steps of 0.39%.
The value to be programmed into the PWMMAX register is given by
Value (decimal) = PWMMAX/0.39
Example 1
For a maximum PWM duty cycle of 50%,
Value (decimal) = 50/0.39 = 128 (decimal)
Value = 128 (decimal) or 0x80 (hexadecimal)
Example 2
For a maximum PWM duty cycle of 75%,
Value (decimal) = 75/0.39 = 192 (decimal)
Value = 192 (decimal) or 0xC0 (hexadecimal)
PWMMAX Register
Register 0x2C, Maximum PWM1 to PWM4 Duty Cycle =
0xC0 (75% default)
See the Note on Fan Speed and PWM Duty Cycle section for
more information.
STEP 5—TRANGE FOR TEMPERATURE CHANNELS
TRANGE is the range of temperatures over which automatic fan
control occurs when the programmed TMIN temperature is
exceeded. TRANGE is a temperature slope, not an arbitrary value;
that is, a TRANGE of 40°C holds true only for PWMMIN = 33%. If
PWMMIN is increased or decreased, the effective TRANGE changes.
TEMPERATURE
TMIN
100%
PWMMIN
0%
P
W
M
DUT
Y
CY
CL
E
TRANGE
0556
9-
046
Figure 58. TRANGE Parameter Affects Cooling Range
The TRANGE or fan control slope is determined by the following
procedure:
1.
Determine the maximum operating temperature for that
channel (for example, 70°C).
2.
Determine experimentally the fan speed (PWM duty cycle
value) that does not exceed the temperature at the worst-
case operating points. (For example, 70°C is reached when
the fans are running at 50% PWM duty cycle.)
3.
Determine the slope of the required control loop to meet
these requirements.
4.
Using the ADT7462 evaluation software, this functionality
can be graphically programmed and visualized.
Ask your local Analog Devices, Inc. representative for
details.
TMIN
100%
33%
0%
P
W
M
DU
TY
C
Y
CL
E
50%
30°C
40°C
055
69-
047
Figure 59. Adjusting PWMMIN Affects TRANGE
TRANGE is implemented as a slope, which means that as PWMMIN
is changed, TRANGE changes, but the actual slope remains the
same. The higher the PWMMIN value, the smaller the effective
TRANGE; that is, the fan reaches full speed (100%) at a lower
temperature.
0556
9-
048
TMIN
100%
33%
0%
PW
M
DU
TY
CYC
L
E
50%
30°C
40°C
25%
10%
45°C
54°C
Figure 60. Increasing PWMMIN Changes Effective TRANGE
相關(guān)PDF資料
PDF描述
ADTSM66SV KEYPAD SWITCH, SPST, MOMENTARY-TACTILE, 0.05A, 12VDC, 3.92 N, SURFACE MOUNT-STRAIGHT
ADTS644N/KV KEYPAD SWITCH, SPST, MOMENTARY-TACTILE, 0.05A, 12VDC, 1.57 N, THROUGH HOLE-STRAIGHT
ADTSM648N/KV KEYPAD SWITCH, SPST, MOMENTARY-TACTILE, 0.05A, 12VDC, 1.57 N, SURFACE MOUNT-STRAIGHT
ADTS62KVB KEYPAD SWITCH, SPST, MOMENTARY-TACTILE, 0.05A, 12VDC, 1.47 N, THROUGH HOLE-STRAIGHT
ADUC7022BCP 32-BIT, FLASH, 45.5 MHz, RISC MICROCONTROLLER, QCC40
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADT7462ACPZ-5RL7 功能描述:監(jiān)控電路 FLX H/WRE MON IC SRV RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類(lèi)型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
ADT7462ACPZ-R7 功能描述:監(jiān)控電路 FLX H/WRE MON IC SRV RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類(lèi)型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
ADT7462ACPZ-REEL 功能描述:監(jiān)控電路 FLX H/WRE MON IC SRV RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類(lèi)型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
ADT7462ACPZ-REEL7 功能描述:IC TEMP/VOLT MONITOR 32-LFCSP RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:溫度監(jiān)控系統(tǒng)（傳感器） 傳感器類(lèi)型:內(nèi)部和外部 感應(yīng)溫度:-40°C ~ 125°C，外部傳感器 精確度:±2.5°C 本地（最大值），±5°C 遠(yuǎn)程（最大值） 拓?fù)?ADC，比較器，寄存器庫(kù) 輸出類(lèi)型:2 線 SMBus? 輸出警報(bào):無(wú) 輸出風(fēng)扇:無(wú) 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類(lèi)型:表面貼裝 封裝/外殼:SOT-23-8 供應(yīng)商設(shè)備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱(chēng):296-22675-6
ADT7462EBZEVB 功能描述:EVALUATION BOARD ADT7462 制造商:on semiconductor 系列:* 零件狀態(tài):在售 標(biāo)準(zhǔn)包裝:1
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*