Rainbow Electronics MAX6642 User Manual
Page 2
MAX6642
±1°C, SMBus-Compatible Remote/Local
Temperature Sensor with Overtemperature Alarm
2
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ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
CC
= +3.0V to +5.5V, T
A
= -40°C to +125°C, unless otherwise specified. Typical values are at V
CC
= +3.3V and T
A
= +25
°C.) (Note 1)
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.
All Voltages Referenced to GND
V
CC
...........................................................................-0.3V to +6V
DXP.............................................................-0.3V to (V
CC
+ 0.3V)
SCLK, SDA, ALERT ..................................................-0.3V to +6V
SDA, ALERT Current ...........................................-1mA to +50mA
Continuous Power Dissipation (T
A
= +70°C)
6-Pin TDFN (derate 24.4mW/°C above +70°C) .........1951mW
ESD Protection (all pins, Human Body Model) ................±2000V
Junction Temperature ......................................................+150°C
Operating Temperature Range .........................-40°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Voltage
V
CC
3.0
5.5
V
0.25
°C
Temperature Resolution
10
Bits
T
RJ
= +60°C to +100°C,
T
A
= +25
°C to +85°C
-1.0
+1.0
T
RJ
= 0°C to +125°C
-3.0
+3.0
Remote Temperature Error
V
CC
= 3.3V
T
RJ
= +125°C to +150°C
-3.5
+3.5
°C
T
A
= +60°C to +100°C
-2.0
+2.0
Local Temperature Error
V
CC
= 3.3V
T
A
= 0°C to +125°C
-3.0
+3.0
°C
Supply Sensitivity of Temperature
Error
±0.2
°C/V
Undervoltage Lockout Threshold
UVLO
Falling edge of V
CC
disables ADC
2.4
2.7
2.95
V
Undervoltage Lockout Hysteresis
90
mV
Power-On-Reset (POR) Threshold
V
CC
falling edge
1.5
2.0
2.4
V
POR Threshold Hysteresis
90
mV
Standby Supply Current
SMBus static
3
10
µA
Operating Current
During conversion
0.5
1.0
mA
Average Operating Current
260
µA
Conversion Time
t
CONV
From stop bit to conversion completion
106
125
143
ms
Conversion Rate
f
CONV
8
Hz
High level
80
100
120
Remote-Diode Source Current
I
RJ
Low level
8
10
12
µA
ALERT
V
OL
= 0.4V
1
Output-Low Sink Current
V
OL
= 0.6V
4
mA
Output-High Leakage Current
V
OH
= V
CC
1
µA