1FEATURES
234• ±1°C REMOTE DIODE SENSORS
• ±1°C LOCAL TEMPERATURE SENSOR
• SERIES RESISTANCE CANCELLATION
• n-FACTOR CORRECTION
• TEMPERATURE ALERT FUNCTION
• AVERAGING
• 12-BIT RESOLUTION
• DIODE FAULT DETECTION
• SENSES BUS VOLTAGES FROM 0V TO +26V
• REPORTS CURRENT IN AMPS, VOLTAGE IN
VOLTS AND POWER IN WATTS
• HIGH ACCURACY: 1% MAX OVER TEMP
• WATCHDOG LIMITS:
– Upper Over-Limit
– Lower Under-Limit

APPLICATIONS
• DESKTOP AND NOTEBOOK COMPUTERS
• SERVERS
• INDUSTRIAL CONTROLLERS
• CENTRAL OFFICE TELECOM EQUIPMENT
• LCD/ DLP®/LCOS PROJECTORS
• STORAGE AREA NETWORKS (SAN)

DESCRIPTION
The TMP512 (dual-channel) and TMP513
(triple-channel) are system monitors that include
remote sensors, a local temperature sensor, and a
high-side current shunt monitor. These system
monitors have the capability of measuring remote
temperatures, on-chip temperatures, and system voltage/power/current consumption.
The remote temperature sensor diode-connected
transistors are typically low-cost, NPN- or PNP-type
transistors or diodes that are an integral part of
microcontrollers, microprocessors, or FPGAs.
Remote accuracy is ±1°C for multiple IC manufacturers, with no calibration needed. The
two-wire serial interface accepts SMBus™ or
two-wire write and read commands.
The onboard current shunt monitor is a high-side
current shunt and power monitor. It monitors both the
shunt drop and supply voltage. A programmable
calibration value (along with the TMP512/TMP513
internal digital multiplier) enables direct readout in amps; an additional multiplication calculates power in
watts. The TMP512 and TMP513 both feature two
separate onboard watchdog capabilities: an over-limit
comparator and a lower-limit comparator.
These devices use a single +3V to +26V supply,
drawing a maximum of 1.4mA of supply current, and
they are specified for operation from –40°C to
+125°C.