Rainbow Electronics MAX6656 User Manual
Page 2
MAX6655/MAX6656
Dual Remote/Local Temperature Sensors and
Four-Channel Voltage Monitors
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
CC
= +3.0V to +3.6V for MAX6656, V
CC
= +4.5V to +5.5V for MAX6655, T
A
= -55°C to +125°C, unless otherwise noted. Typical values
are at V
CC
= +3.3V for MAX6656, V
CC
= +5.0V for MAX6655, T
A
= +25°C.)
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.
V
CC
to GND ..............................................................-0.3V to +6V
DXN_ to GND ........................................................-0.3V to +0.8V
SMBCLK, SMBDATA,
ALERT, STBY,
OVERT to GND.....................................................-0.3V to +6V
V
IN1
to GND............................................................-0.3V to +16V
V
IN2
to GND..............................................................-0.3V to +6V
V
IN3
to GND..............................................................-0.3V to +6V
All Other Pins to GND.................................-0.3V to (V
CC
+ 0.3V)
SMBDATA,
ALERT, OVERT Current....................-1mA to +50mA
DXN_ Current......................................................................±1mA
ESD Protection (all pins, Human Body Model) ..................2000V
Continuous Power Dissipation (T
A
= +70°C)
16-Pin QSOP (derate 8.30mW/°C above +70°C)........667mW
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
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Range
V
CC
3.0
5.5
V
+60°C
≤ T
A
≤ +100°C
±1.5
Accuracy (Local Sensor)
0°C
≤ T
A
≤ +125°C
±3
°C
+60°C
≤ T
RJ
≤ +100°C
±1
Accuracy (Remote Sensor)
0°C
≤ T
RJ
≤ +120°C
±3
°C
0.125
°C
Temperature Measurement
Resolution
11
Bits
ADC Input Impedance
Z
IN
V
IN1
, V
IN2
, V
IN3
input resistance
100
k
Ω
ADC Total Error
V
IN1
, V
IN2
, V
IN3
between 30% and 120% of
nominal
±1
±1.5
%
V
IN
ADC Resolution
8
Bits
Undervoltage Lockout Threshold
UVLO
V
CC
input, disables A/D conversion,
falling edge
2.50
2.70
2.90
V
Undervoltage Lockout
Hysteresis
90
mV
Power-On Reset (POR)
Threshold
V
CC
, falling edge
1
1.7
2.5
V
POR Threshold Hysteresis
90
mV
Standby Current
SMBus static,
STBY = GND
3
10
µA
DXP and DXN Leakage Current
In standby mode
2
µA
Average Operating Current
Continuous temperature mode
550
1000
µA
Conversion Time for Single
Temperature Measurement
t
CON
From stop bit to conversion completed
95
125
155
ms
Monitoring Cycle Time
t
MONI
Total of 3 temperature plus 4 voltage
measurements
625
ms