Thermal Watchdog. MAX7504 Datasheet

MAX7504 Datasheet PDF, Equivalent


Part Number

MAX7504

Description

Digital Temperature Sensors and Thermal Watchdog

Manufacture

Maxim Integrated

Total Page 13 Pages
PDF Download
Download MAX7504 Datasheet


MAX7504 Datasheet
MAX7500–MAX7504
EVALUATION KIT AVAILABLE
Digital Temperature Sensors and Thermal
Watchdog with Bus Lockup Protection
General Description
The MAX7500–MAX7504 temperature sensors accurately
measure temperature and provide an overtemperature
alarm/interrupt/shutdown output. These devices convert
the temperature measurements to digital form using a
high-resolution, sigma-delta, analog-to-digital converter
(ADC). Communication is through an I2C-compatible
2-wire serial interface. The MAX7500/MAX7501/MAX7502
integrate a timeout feature that offers protection against
I2C bus lockups. The MAX7503/MAX7504 do not include
the timeout feature.
The 2-wire serial interface accepts standard write byte,
read byte, send byte, and receive byte commands to read
the temperature data and configure the behavior of the
open-drain overtemperature shutdown output.
The MAX7500 features three address select lines, while
the MAX7501–MAX7504 feature two address select lines
and a RESET input. The MAX7500/MAX7501/MAX7502s’
3.0V to 5.5V supply voltage range, low 250μA supply
current, and a lockup-protected I2C-compatible interface
make them ideal for a wide range of applications, including
personal computers (PCs), electronic test equipment, and
office electronics.
The MAX7500–MAX7504 are available in 8-pin μMAX®
and SO packages and operate over the -55°C to +125°C
temperature range.
Applications
● PCs
● Servers
Office Electronics
Electronic Test Equipment
● Industrial Process Control
Typical Application Circuits
+3.0V TO +5.5V
Features
● Timeout Prevents Bus Lockup (MAX7500, MAX7501,
MAX7502)
● Hardware Reset for Added Protection
● I2C Bus Interface
● 3.0V to 5.5V Supply Voltage Range
250μA (typ) Operating Supply Current
3μA (typ) Shutdown Supply Current
● ±1.5°C (max) Temperature Accuracy (-25°C to
+100°C, 3-σ)
μMAX, SO Packages Save Space
● Separate Open-Drain OS Output Operates as
Interrupt or Comparator/Thermostat Input
● Register Readback Capability
● Improved LM75 Second Source
Ordering Information/
Selector Guide
PART
TEMP
RANGE
PIN-
PACKAGE
RESET TIMEOUT
MAX7500MSA
-55°C to
+125°C
8 SO
X
Ordering Information/Selector Guide continued at end of
data sheet.
Pin Configurations appear at end of data sheet.
+3.0V TO +5.5V
4.7k
TO I2C MASTER
SDA
SCL
OS MAX7500
GND
+VS
A0
A1
A2
4.7k
TO I2C MASTER
SDA +VS
SCL MAX7501
OS MAX7502
MAX7503
MAX7504
A0
A1
GND RESET
μMAX is a registered trademark of Maxim Integrated Products, Inc.
19-3382; Rev 5; 11/16

MAX7504 Datasheet
MAX7500–MAX7504
Digital Temperature Sensors and Thermal
Watchdog with Bus Lockup Protection
Absolute Maximum Ratings
(Note 1)
+VS to GND..............................................................-0.3V to +6V
OS, SDA, SCL to GND..........................................-0.3V to +6.0V
All Other Pins to GND................................-0.3V to (+VS + 0.3V)
Input Current at Any Pin (Note 2)........................................+5mA
Package Input Current (Note 2)........................................+20mA
ESD Protection (all pins, Human Body Model, Note 3)...±2000V
Continuous Power Dissipation (TA = +70°C)
8-Pin μMAX (derate 4.5mW/°C above +70°C).............362mW
8-Pin SO (derate 5.9mW/°C above +70°C)..................471mW
Operating Temperature Range.......................... -55°C to +125°C
Junction Temperature.......................................................+150°C
Storage Temperature Range............................. -65°C to +150°C
Lead Temperature (soldering, 10s).................................. +300°C
Soldering Temperature (reflow)
Lead(Pb)-free............................................................... +260°C
Containing lead(Pb)......................................................+240°C
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifica-
tions do not apply when operating the device beyond its rated operating conditions.
Note 2: When the input voltage (VI) at any pin exceeds the power supplies (VI < VGND or VI > + VS), the current at that pin should
be limited to 5mA. The 20mA maximum package input current rating limits the number of pins that can safely exceed the
power supplies with an input current of 5mA to 4.
Note 3: Human Body Model, 100pF discharged through a 1.5kΩ resistor.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Electrical Characteristics
(+VS = +3.0V to +5.5V, TA = -55°C to +125°C, unless otherwise noted. Typical values are at +VS = +3.3V, TA = +25°C.) (Notes 4, 5)
PARAMETER
Accuracy, 6-σ
Accuracy, 3-σ (Note 5)
Resolution
Conversion Time
Quiescent Supply Current
+VS Supply Voltage Range
OS Output Saturation Voltage
OS Delay
TOS Default Temperature
THYST Default Temperature
LOGIC (SDA, SCL, A0, A1, A2)
Input High Voltage
SYMBOL
CONDITIONS
-25°C ≤ TA ≤ +100°C
-55°C ≤ TA ≤ +125°C
-25°C ≤ TA ≤ +100°C
-55°C ≤ TA ≤ +125°C
(Note 6)
I2C inactive
Shutdown mode, +VS = 3V
Shutdown mode, +VS = 5V
IOUT = 4.0mA (Note 7)
(Note 8)
(Note 9)
(Note 9)
VIH
MIN TYP MAX UNITS
-2.0
±2.0
°C
-3.0 ±3.0
-1.5
+1.5
°C
-2.0 +2.0
9 bits
100 ms
0.25 0.5
mA
3
5 µA
3.0 5.5 V
0.8 V
1
6
Conver-
sions
80 °C
75 °C
+VS x
0.7
V
Input Low Voltage
Input High Current
Input Low Current
Input Capacitance
Output High Current
Output Low Voltage
VIL
IIH VIN = 5V
IIL VIN = 0V
All digital inputs
VIN = 5V
IOL = 3mA
0.005
0.005
5
+VS x
0.3
1.0
1.0
1
0.4
V
µA
µA
pF
µA
V
www.maximintegrated.com
Maxim Integrated 2


Features Datasheet pdf MAX7500–MAX7504 EVALUATION KIT AVAILA BLE Digital Temperature Sensors and The rmal Watchdog with Bus Lockup Protectio n General Description The MAX7500–MA X7504 temperature sensors accurately me asure temperature and provide an overte mperature alarm/interrupt/shutdown outp ut. These devices convert the temperatu re measurements to digital form using a high-resolution, sigma-delta, analog-t o-digital converter (ADC). Communicatio n is through an I2C-compatible 2-wire s erial interface. The MAX7500/MAX7501/MA X7502 integrate a timeout feature that offers protection against I2C bus locku ps. The MAX7503/MAX7504 do not include the timeout feature. The 2-wire serial interface accepts standard write byte, read byte, send byte, and receive byte commands to read the temperature data a nd configure the behavior of the open-d rain overtemperature shutdown output. T he MAX7500 features three address selec t lines, while the MAX7501–MAX7504 fe ature two address select lines and a RESET input. The MAX7500/M.
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