| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
8,000 pcs
|
8000 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request | |
|
1,803 pcs
|
1803 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request | |
|
21 pcs
|
21 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
| Category | |
| Manufacturer Name | |
| Accuracy | |
| Function | |
| Halogen Free | |
| Mounting Type | |
| Operating Temperature | |
| Output Alarm | |
| Output Fan | |
| Output Type | |
| SVHC Present | |
| Sensing Temperature | |
| Sensor Type | |
| Supplier Device Package | |
| Supplier Package | |
| Topology | |
| Voltage |
The NCT7491MNTXG from ON Semiconductor is a serially programmable hardware monitor designed for comprehensive thermal management. It integrates an on-chip temperature sensor and supports monitoring of two remote temperature zones. The device features a PECI 3.0 interface for CPU temperature monitoring and an SMBus compatible master for reading from other thermal sensors.
This IC offers advanced fan control with three PWM outputs and monitoring for up to four fans, supporting automatic speed control. It also includes four analog inputs for voltage monitoring of channels like 12V, 5V, 2.5V, and Vccp, along with monitoring of Vdd and PECI VTT supply voltages. Programmable limits allow for comparison of monitored values, generating interrupts via an ALERT output pin for out-of-limit conditions. A THERM output is also available for fail-safe thermal control.
The NCT7491MNTXG operates over a supply voltage range of 3.0V to 3.6V and is available in a 24-lead QFN package. Communication is handled via an SMBus/I²C interface, with SMBus address selection allowing up to three devices on the bus. It meets SMBus 2.0 electrical specifications and is Pb-Free, Halogen Free/BFR Free, and RoHS Compliant.
Key features include PECI 3.0 master capability, SMBus master functionality, on-chip and remote temperature sensing, series resistance cancellation, automatic fan speed control, and limit comparison for monitored channels.
| 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 3.0 V to 3.6 V.
The operating temperature range is -40°C to 125°C.
The NCT7491MNTXG is available in a 24-VFQFN Exposed Pad package.
Yes, the NCT7491MNTXG is RoHS3 Compliant.
The NCT7491MNTXG can monitor 2 remote temperature zones.
The NCT7491MNTXG provides 3 PWM fan control outputs.
The temperature sensing accuracy is ±3.5°C.