The LM96000 hardware monitor has an SMBus 2.0-compatible two-wire digital interface. Using an 8-bit Sigma-Delta ADC, the LM96000 measures: - the temperature of two remote diode-connected transistors as well as its own die - the VCCP, 2.5V, 3.3VSBY, 5.0V, and 12V supplies (internal scaling resistors). To set fan speed, the LM96000 has three PWM outputs that are each controlled by one of three temperature zones. High and low PWM frequency ranges are supported. The LM96000 includes a digital filter that can be invoked to smooth temperature readings for better control of fan speed. The LM96000 has four tachometer inputs to measure fan speed. Limit and status registers for all measured values are included.
The LM96000 is a hardware monitor that provides temperature measurement of up to two remote diodes and its own die, along with monitoring of multiple supply voltages (VCCP, 2.5 V, 3.3 VSBY, 5 V, 12 V). It features three PWM fan‑control outputs, four tachometer inputs, and a 2‑wire SMBus 2.0 compatible digital interface.
The document includes pin descriptions, absolute maximum ratings, electrical characteristics, SMBus timing, functional description, and physical dimensions for the 24‑pin TSSOP package (LM96000CIMT / LM96000CIMTX). It also provides notes on device handling, ESD protection, and address selection for multiple devices on the same bus.
| Temperature sensor resolution | 8‑bits, 1 °C |
|---|---|
| Temperature measurement range (device) | ‑40 °C to +85 °C |
| Remote diode temperature range | ‑40 °C to +125 °C |
| Supply voltage (3.3 V nominal) | +3.0 V to +3.6 V |
| Typical supply current | 0.53 mA |
| PWM frequency range | 10 Hz to 30 kHz |
| Number of tachometer inputs | 4 |
The LM96000 provides four tachometer inputs for monitoring fan speed.
The temperature sensor has an 8‑bit resolution corresponding to 1 °C steps.
It operates from +3.0 V to +3.6 V for the 3.3 V nominal supply.