Datasheet
MAX34446
PMBus Power-Supply Data Logger
2Maxim Integrated
V
DD
to V
SS
...........................................................-0.3V to +5.5V
SDA or SCL to V
SS
............................................... -0.3V to +5.5V
RS-[5:0] to V
SS
.....................................................-0.3V to +0.3V
RS+[5:0] to V
SS
..... -0.3V to (V
DD
+ 0.3V), not to exceed +5.5V
RS+[5:0] to V
SS
with 100ω of series resistance ..-0.3V to +2.0V
All other pins
relative to V
SS
.... -0.3V to (V
DD
+ 0.3V), not to exceed +5.5V
All other pins relative to V
SS
with greater than
750ω of series resistance
.................................. -0.3V to 5.5V
REG18 to V
SS
....................................................... -0.3V to +2.0V
REG25 to V
SS ..............................................................
-0.3V to +0.3V
Continuous Power Dissipation (T
A
= +70NC)
TQFN (derate 35.7mW/NC above +70C)
................2857.1mW
Operating Temperature Range
........................ -40NC to +105NC
Storage Temperature Range
............................ -55NC to +125NC
Lead Temperature (soldering, 10s)
................................+300NC
Soldering Temperature (reflow)
......................................+260NC
ABSOLUTE MAXIMUM RATINGS
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera-
tion 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.
RECOMMENDED OPERATING CONDITIONS
(T
A
= -40NC to +105NC, unless otherwise noted.)
DC ELECTRICAL CHARACTERISTICS
(V
DD
= 2.7V to 5.5V, T
A
= -40NC to +105NC, unless otherwise noted. Typical values are at V
DD
= 3.3V, T
A
= +25NC.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
V
DD
Operating Voltage V
DD
(Note 1) 2.7 5.5 V
Input Logic-High V
IH
0.7 x
V
DD
V
DD
+
0.3
V
Input Logic-Low V
IL
0
0.3 x
V
DD
V
Input Logic-High: SCL, SDA V
I2C_IH
2.7V P V
DD
P 3.6V (Note 1)
2.1
V
DD
+
0.3
V
Input Logic-Low: SCL, SDA V
I2C_IL
2.7V P V
DD
P 3.6V (Note 1)
0 +0.8 V
V
DD
Rise Time From 0V to 2.7V 4 ms
V
DD
Trace Impedance 5
W
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Current
I
CPU
(Note 2) 3.0
mA
I
PROGRAM
8
Brownout Voltage V
BO
Monitors V
DD
(Note 1) 2.40 2.46 2.55 V
Brownout Hysteresis V
BOH
Monitors V
DD
(Note 1) 30 mV
Internal System Clock f
MOSC
4.0 MHz
System Clock Error (Note 3) f
ERR:MOSC
+25NC P T
A
P +85NC
-3 +2
%
-40NC P T
A
P +25NC
-6.5 +1.6
-20NC P T
A
P +105NC
-4 +2.5
Output Logic-Low V
OL1
I
OL
= 4mA (Note 1) 0.4 V
Output Logic-High V
OH1
I
OH
= -2mA (Note 1)
V
DD
-
0.5
V
Pullup Current I
PU
V
PIN
= V
SS
, V
DD
= 3.3V 38 55 107
FA