| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
2,500 pcs
|
2500 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request | |
|
2,000 pcs
|
2000 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request | |
|
220 pcs
|
220 pcs | On Request | 1 | On Request | On Request | 12+ | On Request | On Request |
| Category | |
| Manufacturer Name | |
| Accuracy | |
| Function | |
| Halogen Free | |
| Mounting Type | |
| Operating Temperature | |
| Output Alarm | |
| Output Fan | |
| Output Type | |
| Sensing Temperature | |
| Sensor Type | |
| Supplier Device Package | |
| Supplier Package | |
| Supply Voltage | |
| Topology | |
| Voltage |
The NCT7491RQR2G from On Semiconductor is a versatile remote thermal monitor and fan controller IC. It features a 2-wire serial interface compatible with SMBus and I2C protocols, allowing it to monitor ambient temperature and two remote temperature zones. This device also includes a PECI 3.0 master interface for CPU temperature monitoring.
Key electrical specifications include a supply voltage range of 3.0V to 3.6V and an operating temperature range of -40°C to 125°C. The NCT7491RQR2G can automatically control the speed of up to three fans using PWM output and monitor the speed of four fans. It also provides four analog inputs for monitoring voltage channels like 12V, 5V, 2.5V, and Vccp, along with monitoring its own Vdd supply and PECI VTT voltages.
Designed for robust system monitoring, the IC compares measured values against programmable limits, generating an ALERT output pin interrupt when limits are exceeded. A THERM output is also available for fail-safe thermal control. The device is available in a 24-lead QSOP package, suitable for surface mounting.
This IC meets SMBus 2.0 electrical specifications and is Pb-Free, Halogen Free/BFR Free, and RoHS Compliant. Its functionality makes it suitable for various applications requiring precise thermal management and system voltage monitoring.
| Qty | Low | High |
|---|---|---|
| 1+ | $2.06 | $2.06 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The operating voltage range is 3.0V to 3.6V.
The operating temperature range is -40°C to 125°C.
The NCT7491RQR2G is available in a 24-QSOP package.
Yes, the NCT7491RQR2G is RoHS3 Compliant.
The NCT7491 can monitor 2 remote temperature zones.
The NCT7491 can automatically control the speed of 3 fans using PWM control.
Communication with the NCT7491 is accomplished via the SMBus/I2C interface.