AMC6821

アクティブ

PWM ファン・コントローラ、タコメータ (回転速度計)、2 チャネル温度センサの統合型製品

製品詳細

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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技術資料

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種類 タイトル 最新の英語版をダウンロード 日付
* データシート Intelligent Temperature Monitor and PWM Fan Controller データシート (Rev. C) 2007年 7月 26日

設計および開発

その他のアイテムや必要なリソースを参照するには、以下のタイトルをクリックして詳細ページをご覧ください。

ドライバまたはライブラリ

AMC6821SW-LINUX — Linux ドライバ、AMC6821 用

この Linux ドライバは、温度監視とファン制御を実施する AMC6821 をサポートしています。また、この Linux ドライバは I2C バス経由の通信をサポートしており、ハードウェア監視サブシステムとのインターフェイスとして機能します。
Linux のメインライン・ステータス

Linux メインラインで利用可能か:はい
git.ti.com から入手可能か:N/A

サポート対象デバイス:
  • AMC6821
Linux ソース・ファイル

このデバイスに関連付けられているファイル:

  1. drivers/hwmon/amc6821.c
  2. Documentation/hwmon/amc6821
ソース・ファイル

(...)

シミュレーション・モデル

AMC6821DBQ IBIS Model

SLAC187.ZIP (14 KB) - IBIS Model
パッケージ ピン数 CAD シンボル、フットプリント、および 3D モデル
SSOP (DBQ) 16 Ultra Librarian

購入と品質

記載されている情報:
  • RoHS
  • REACH
  • デバイスのマーキング
  • リード端子の仕上げ / ボールの原材料
  • MSL 定格 / ピーク リフロー
  • MTBF/FIT 推定値
  • 使用原材料
  • 認定試験結果
  • 継続的な信頼性モニタ試験結果
記載されている情報:
  • ファブの拠点
  • 組み立てを実施した拠点

サポートとトレーニング

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