TMP513AIRSAR

TMP512 (dual-channel) and TMP513 (triple-channel) are system monitors integrating remote sensors, a local temperature sensor, and a high-side current shunt monitor. These system monitors are capable of measuring remote temperature, on-chip temperature, and system voltage/power/current consumption. The diode-connected transistors used for remote temperature sensing are typically low-cost NPN or PNP transistors or diodes integrated in microcontrollers, microprocessors, or FPGAs. Devices from multiple IC vendors can achieve ±1°C remote measurement accuracy without calibration. The two-wire serial interface supports SMBus or two-wire read/write commands. The onboard current shunt monitor is a high-side current shunt and power monitor that simultaneously monitors shunt voltage drop and supply voltage. A programmable calibration value (combined with the TMP512/TMP513 internal digital multiplier) enables direct readout in amperes; an additional multiplication operation yields power readings in watts. Both TMP512 and TMP513 feature two independent onboard watchdog functions: an over-limit comparator and an under-limit comparator. These devices operate from a single +3V to +26V supply with a maximum supply current of 1.4mA, and are specified for an operating temperature range of -40°C to +125°C.

Applications

• Desktop and laptop computers
• Servers
• Industrial controllers
• Central office telecommunications equipment
• LCD/DLP/LCOS projectors
• Storage Area Networks (SAN)

Key features

• ±1℃ remote diode sensor
• ±1℃ local temperature sensor
• Series resistance cancellation
• n-factor correction
• Temperature alarm
• Averaging function
• 12-bit resolution
• Diode fault detection
• Bus voltage measurement: 0V to +26V
• Reports current, voltage, and power in amperes, volts, and watts
• High accuracy: 1% maximum error over temperature range
• Watchdog limits support: over-limit and under-limit