The LM63CIMA/NOPB is a Remote Diode Temperature Sensor with integrated fan control. The device accurately measures its own temperature and the temperature of a diode-connected transistor, such as a 2N3904 or a thermal diode commonly found on computer processors, graphics processor units (GPU) and other ASIC's. The LM63 remote temperature sensor's accuracy is factory trimmed for the series resistance and 1.0021 non-ideality of the Intel 0.13μm Pentium 4 and Mobile Pentium 4 Processor-M thermal diode. The LM63 has an offset register to correct for errors caused by different non-ideality factors of other thermal diodes. The LM63 also features an integrated, pulse-width- modulated (PWM), open-drain fan control output. Fan speed is a combination of the remote temperature reading, the lookup table and the register settings. The 8-step lookup table enables the user to program a non-linear fan speed vs. temperature transfer function often used to quiet acoustic fan noise.
- Accurately senses diode-connected 2N3904 transistors or thermal diodes on board large processors
- Accurately senses its own temperature
- Acoustic fan noise reduction with user-programmable 8-step lookup table
- Multi-function, user-selectable pin for either ALERT(bar) output or tachometer input functions
- Tachometer input for measuring fan RPM
- Smart-Tach modes for measuring RPM of fans with pulse-width-modulated power
- Offset register can adjust for a variety of thermal diodes
- 10-bit Plus sign remote diode temperature data format, with 0.125°C resolution
- SMBus 2.0 compatible interface, supports TIMEOUT
- LM86-Compatible pin-out
- LM86-Compatible register set
- Green product and no Sb/Br
传感与仪器, 计算机和计算机周边, 测试与测量, 工业, 自动化与过程控制, 电机驱动与控制, 热管理
(EN)
