The LM64 is a remote diode temperature sensor with PWM fan control. The LM64 accurately measures its own temperature and that of a remote diode. The LM64 remote temperature accuracy is factory trimmed for a MMBT3904 diode-connected transistor with a 16°C offset for high temperatures.
The LM64 features a PWM, open-drain, fan control output, 5 GPIO (General Purpose Input/Output) and 5 GPD (General Purpose Default) pins. The 8-step Lookup Table allows for a non-linear fan speed vs. temperature transfer function often used to quiet acoustic fan noise
| LM64 | |
| Resolution (Bits) | 11 |
| Interface Type | SMBus |
| Supply Max (Volt) | 3.6 |
| Supply Min (Volt) | 3 |
| Category | Thermal Management |
| Fan Control Method | Lookup Table |
| Fan Control Output(s) | 1 PWM |
| Fan Speed Inputs | 1 |
| GPIOs | 5 GPIO, 5 GPD |
| Interrupt Outputs (Count) | 1 |
| Quiescent Current (mA) | 1.1 |
| Temp Resolution | 11-bit/0.125degC |
| TruTherm(TM) Beta Compensation | No |