AMC6821 温度监控和风扇控制

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

	AMC6821
Supply Current (Max) (mA)	1.5
No. of Temperature Sensors	2
Pin/Package	16SSOP/QSOP
Approx. Price (US$)	0.99 \| 1ku
Operating Temperature Range (C)	-40 to 125
Temperature Sensor Accuracy (C)	2C max for +50C to +100C, 3C max for -40C to +125C
Temperature Sensor Resolution (C)	0.125
PWM Frequency (Hz)	10 to 40000
Duty Cycle Resolution (Bit)	8
Fan Speed Measurement Range (RPM)	100 to 23000
Fan Speed Measurement Accuracy (%)	6
VCC (Nom) (V)	3
Rating	Catalog

AMC6821 特性

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

AMC6821 芯片订购指南

器件	状态	温度	价格	封装 \| 引脚	封装数量 \| 封装载体	丝印标记
AMC6821SDBQ	ACTIVE	-40 to 125	1.20 \| 1ku	SSOP/QSOP (DBQ) \| 16	75 \| TUBE
AMC6821SDBQG4	ACTIVE	-40 to 125	1.20 \| 1ku	SSOP/QSOP (DBQ) \| 16	75 \| TUBE
AMC6821SDBQR	ACTIVE	-40 to 125	0.99 \| 1ku	SSOP/QSOP (DBQ) \| 16	2500 \| LARGE T&R
AMC6821SDBQRG4	ACTIVE	-40 to 125	0.99 \| 1ku	SSOP/QSOP (DBQ) \| 16	2500 \| LARGE T&R

AMC6821 质量与无铅数据

器件	环保计划*	铅/焊球涂层	MSL 等级/回流焊峰	环保信息与无铅 (Pb-free)	DPPM / MTBF / FIT 率
AMC6821SDBQ	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	AMC6821SDBQ	AMC6821SDBQ
AMC6821SDBQG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	AMC6821SDBQG4	AMC6821SDBQG4
AMC6821SDBQR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	AMC6821SDBQR	AMC6821SDBQR
AMC6821SDBQRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	AMC6821SDBQRG4	AMC6821SDBQRG4