The MIC280 is a digital thermal supervisor designed for precise temperature measurement, capable of monitoring both its internal temperature and that of a remote PN junction. It offers a high accuracy of ¬±1¬8C for remote sensing within the range of +60¬8C to +100¬8C, and provides programmable temperature resolution from 9-bit to 12-bit. The device features independent high, low, and over-temperature thresholds for each zone, along with fault queues to minimize nuisance tripping. Communication with the host is facilitated through a 2-wire SMBus 2.0-compatible serial interface, which includes a device timeout feature to prevent bus lockup. The MIC280 is equipped with voltage-tolerant I/Os and an open-drain interrupt output pin that supports the SMBus Alert Response Address protocol. It also includes a low power shutdown mode and the ability to lock critical functions for failsafe operation. The device operates within a power supply range of 3.0V to 3.6V and is packaged in a compact IttyBitty SOT23-6 format, making it suitable for applications in desktop, server, and notebook computers, as well as various thermal management scenarios.
The MIC280 is a digital thermal supervisor capable of measuring its own internal temperature and that of a remote PN junction. The remote junction may be an inexpensive commodity transistor, e.g., 2N3906, or an embedded thermal diode such as found in Intel Pentium* II/III/IV CPUs, AMD Athlon* CPUs, and Xilinx Virtex* FPGA's. A 2-wire SMBus* 2.0 compatible serial interface is provided for host communication. Remote temperature is measured with ±1°C accuracy and 9-bit to 12-bit resolution (programmable). Independent high, low, and over-temperature thresholds are provided for each zone. The advanced integrating A/D converter and analog front-end reduce errors due to noise for maximum accuracy and minimum guardbanding. The interrupt output signals temperature events to the host, including data-ready and diode faults. Critical device settings can be locked to prevent changes and insure failsafe operation. The clock, data, and interrupt pins are 5V-tolerant regardless of the value of VDD. They will not clamp the bus lines low even if the device is powered down. Superior accuracy, failsafe operation, and small size make the MIC280 an excellent choice for the most demanding thermal management applications.
Additional Features
| Microchip Technology, Inc. | |
|---|---|
| Product Category | Transistors |
| Product Number | MIC280 |
