產品詳情

Local sensor accuracy (max) 2 Type Fan Controller Operating temperature range (°C) -40 to 125 Supply voltage (min) (V) 2.7 Interface type SMBus Supply voltage (max) (V) 5.5 Features PWM output, Tachometer Supply current (max) (μA) 2000 Temp resolution (max) (bps) 11 Remote channels (#) 1 Addresses 9 Rating Catalog
Local sensor accuracy (max) 2 Type Fan Controller Operating temperature range (°C) -40 to 125 Supply voltage (min) (V) 2.7 Interface type SMBus Supply voltage (max) (V) 5.5 Features PWM output, Tachometer Supply current (max) (μA) 2000 Temp resolution (max) (bps) 11 Remote channels (#) 1 Addresses 9 Rating Catalog
SSOP (DBQ) 16 29.4 mm2 4.9 x 6
  • Remote Temperature Sensor:
    ±2°C Accuracy, 0.125°C Resolution
  • Local Temperature Sensor:
    ±2°C Accuracy, 0.125°C Resolution
  • PWM Controller
  • PWM Frequency: 10Hz to 40kHz
    Duty Cycle: 0% to 100%, 8 Bits
  • Automatic Fan Speed Control Loops
  • SMBus Interface
  • Power: 2.7V to 5.5V
  • Package (Green): QSOP-16 (4mm × 5mm)
  • RoHS Compliant
  • APPLICATIONS
    • Notebook and Desktop PCs
    • Network Servers
    • Telecommunications Equipment
    • PC-Based Equipment
    • DLP and LCD Projectors

DLP is a trademark of Texas Instruments.
Pentium M, Pentium-IV are trademarks of Intel.
JMC is a trademark of JMC Products.
I2C is a trademark of Philips International, Inc.
All other trademarks are the property of their respective owners.
  • Remote Temperature Sensor:
    ±2°C Accuracy, 0.125°C Resolution
  • Local Temperature Sensor:
    ±2°C Accuracy, 0.125°C Resolution
  • PWM Controller
  • PWM Frequency: 10Hz to 40kHz
    Duty Cycle: 0% to 100%, 8 Bits
  • Automatic Fan Speed Control Loops
  • SMBus Interface
  • Power: 2.7V to 5.5V
  • Package (Green): QSOP-16 (4mm × 5mm)
  • RoHS Compliant
  • APPLICATIONS
    • Notebook and Desktop PCs
    • Network Servers
    • Telecommunications Equipment
    • PC-Based Equipment
    • DLP and LCD Projectors

DLP is a trademark of Texas Instruments.
Pentium M, Pentium-IV are trademarks of Intel.
JMC is a trademark of JMC Products.
I2C is a trademark of Philips International, Inc.
All other trademarks are the property of their respective owners.

The AMC6821 is an intelligent temperature monitor and pulse-width modulation (PWM) fan controller. It is designed for noise-sensitive or power-sensitive applications that require active system cooling. Using either a low-frequency or a high-frequency PWM signal, this device can simultaneously drive a fan, monitor remote sensor diode temperatures, and measure and control the fan speed so that it operates with minimal acoustic noise at the lowest possible speed.

The AMC6821 has three fan control modes: Auto Temperature-Fan mode, Software-RPM mode, and Software-DCY mode. Each mode controls the fan speed by changing the duty cycle of a PWM output. Auto Temperature-Fan mode is an intelligent, closed-loop control that optimizes fan speed according to user-defined parameters. This mode allows the AMC6821 to run as a stand-alone device without CPU intervention; the fan can continue to be controlled (based on temperature measurements) even if the CPU or system locks up. Software-RPM mode is a second closed-loop control. In this mode, the AMC6821 adjusts the PWM output to maintain a consistent fan speed at a user-specified target value; that is, the device functions as a fan speed regulator. Software-RPM mode can also be used to allow the AMC6821 to operate as a stand-alone device. The third mode, Software-DCY, is open-loop. In Software-DCY mode, the PWM duty cycle is set directly by the value written to the device.

The AMC6821 has a programmable SMBALERT output to indicate error conditions and a dedicated FAN-FAULT output to indicate fan failure. The THERM pin is a fail-safe output for over-temperature conditions that can be used to throttle a CPU clock. Additionally, the OVR pin indicates the over-temperature limit as well. All of the alarm thresholds are set through the device registers. The AMC6821 is available in a QSOP-16 package.

The AMC6821 is an intelligent temperature monitor and pulse-width modulation (PWM) fan controller. It is designed for noise-sensitive or power-sensitive applications that require active system cooling. Using either a low-frequency or a high-frequency PWM signal, this device can simultaneously drive a fan, monitor remote sensor diode temperatures, and measure and control the fan speed so that it operates with minimal acoustic noise at the lowest possible speed.

The AMC6821 has three fan control modes: Auto Temperature-Fan mode, Software-RPM mode, and Software-DCY mode. Each mode controls the fan speed by changing the duty cycle of a PWM output. Auto Temperature-Fan mode is an intelligent, closed-loop control that optimizes fan speed according to user-defined parameters. This mode allows the AMC6821 to run as a stand-alone device without CPU intervention; the fan can continue to be controlled (based on temperature measurements) even if the CPU or system locks up. Software-RPM mode is a second closed-loop control. In this mode, the AMC6821 adjusts the PWM output to maintain a consistent fan speed at a user-specified target value; that is, the device functions as a fan speed regulator. Software-RPM mode can also be used to allow the AMC6821 to operate as a stand-alone device. The third mode, Software-DCY, is open-loop. In Software-DCY mode, the PWM duty cycle is set directly by the value written to the device.

The AMC6821 has a programmable SMBALERT output to indicate error conditions and a dedicated FAN-FAULT output to indicate fan failure. The THERM pin is a fail-safe output for over-temperature conditions that can be used to throttle a CPU clock. Additionally, the OVR pin indicates the over-temperature limit as well. All of the alarm thresholds are set through the device registers. The AMC6821 is available in a QSOP-16 package.
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類型 標題 下載最新的英語版本 日期
* 數據表 Intelligent Temperature Monitor and PWM Fan Controller 數據表 (Rev. C) 2007年 7月 26日

設計和開發

如需其他信息或資源，請點擊以下任一標題進入詳情頁面查看（如有）。

驅動程序或庫

AMC6821SW-LINUX — 用于 AMC6821 的 Linux 驅動程序

Linux 驅動程序支持 AMC6821 溫度監控和風扇控制。Linux 驅動程序支持通過 I2C 總線和接口與硬件監控子系統進行通信。
Linux 主線狀態

在 Linux 主線中提供：是
可通過 git.ti.com 獲取：不適用

支持的器件：
  • amc6821
Linux 源文件

與該器件關聯的文件為：

  1. drivers/hwmon/amc6821.c
  2. Documentation/hwmon/amc6821
源文件

drivers/hwmon/amc6821.c

其他文件

Documentation/hwmon/amc6821

 

啟用驅動程序支持

使用“make (...)
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仿真模型

AMC6821DBQ IBIS Model

SLAC187.ZIP (14 KB) - IBIS Model
下載
封裝 引腳 CAD 符號、封裝和 3D 模型
SSOP (DBQ) 16 Ultra Librarian

訂購和質量

包含信息：
  • RoHS
  • REACH
  • 器件標識
  • 引腳鍍層/焊球材料
  • MSL 等級/回流焊峰值溫度
  • MTBF/時基故障估算
  • 材料成分
  • 鑒定摘要
  • 持續可靠性監測
包含信息：
  • 制造廠地點
  • 封裝廠地點

支持和培訓

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