Microchip微芯 MIC280 产品介绍
2026-04-14
0次
说明
MIC280是一种能够测量自身内部温度和远程PN结内部温度的数字热监控器。远程连接可以是廉价的商品晶体管,例如2N3906,或者嵌入式热二极管,例如在Intel Pentium*II/III/IV CPU、AMD Athlon*CPU和Xilinx Virtex*FPGA中发现的。提供了2线SMBus*2.0兼容串行接口用于主机通信。远程温度测量精度为±1°C,分辨率为9位至12位(可编程)。为每个区域提供独立的高温、低温和超温阈值。先进的集成A/D转换器和模拟前端减少了由于噪声引起的误差,从而实现了最大的精度和最小的保护带。中断输出信号向主机发送温度事件,包括数据就绪和二极管故障。可以锁定关键设备设置以防止更改并确保故障保护操作。无论VDD的值如何,时钟、数据和中断引脚都具有5V的容差。即使设备断电,它们也不会将总线箝位在低位。卓越的精度、故障保护操作和小尺寸使MIC280成为最苛刻的热管理应用的绝佳选择。
特性
- Measures local and remote temperature
- Highly accurate remote sensing ±1°C max., 60°C to 100°C
- Superior noise immunity for reduced temperature guardbands
- 9-bit to 12-bit temperature resolution for remote zone
- Fault queues to further reduce nuisance tripping
- Programmable high, low, and over-temperature thresholds for each zone
- SMBus 2.0 compatible serial interface including device timeout to prevent bus lockup
- Voltage tolerant I/O''s
- Open-drain interrupt output pin - supports SMBus Alert Response Address protocol
- Low power shutdown mode
- Locking of critical functions to insure failsafe operation
- Failsafe response to diode faults
- Enables ACPI compliant thermal management
- 3.0V to 3.6V power supply range
- IttyBitty®SOT23-6 package
参数
类型 | 描述 |
Typical Accuracy (°C) | 1 |
Interface Type | I2C, SMBus |
Resolution (Max) (bits) | 12 |



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