TMP512_1 Datasheet, PDF (1/54 Pages) Texas Instruments – Temperature and Power Supply System Monitors

TMP512
TMP513
www.ti.com
Temperature and Power Supply System Monitors
Check for Samples: TMP512, TMP513
SBOS491 – JUNE 2010
FEATURES
1
•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.
Mux
DXP1
DXN1
DXP2
DXN2
DXP3
DXN3
V+
Filter C
Subregulator
3.3V
V_IN+
V_IN-
ADC
GND
Low-Pass Filter
ADC
TMP512
TMP513
Internal
Diode
Temperature
Sensor
Power Register
Current Register
Voltage Register
Two-Wire
Interface
GPIO
A0
ALERT
SDA
SCL
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
DLP is a registered trademark of Texas Instruments.
2
SMBus is a trademark of Intel Corporation.
3
All other trademarks are the property of their respective owners.
4
UNLESS OTHERWISE NOTED this document contains
PRODUCTION DATA information current as of publication date.
Products conform to specifications per the terms of Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2010, Texas Instruments Incorporated