ESD Protection (All Pins, Human Body Model) ..................±2kV
Operating Temperature Range ......................... -40°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) .......................................+260°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.
Package Thermal Characteristics
(Note 1)
TQFN
Junction-to-Ambient Thermal Resistance (θ
JA
) ......36.0°C/W
Junction-to-Case Thermal Resistance (θ
JC
) ..............3.0°C/W
Note 1:
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to
www.maximintegrated.com/thermal-tutorial.
Electrical Characteristics
PARAMETER
Supply Voltage
Standby Supply Current
Operating Current
Temperature Resolution
(V
CC
= +3.0V to +3.6V, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at V
CC
= +3.3V and T
A
= +25°C.) (Note 2)
SYMBOL
V
CC
I
CC1
I
CC2
I
SS
SMBus static
During conversion, RC off
During conversion, RC on
CONDITIONS
MIN
3.0
4
500
550
11
0.125
T
A
= +30°C to +85°C,
T
RJ
= +60°C to +100°C
V
CC
= 3.3V
T
A
, T
RJ
= -40°C to +125°C
T
A
= +30°C to +85°C,
T
RJ
= +100°C to +150°C
V
CC
= 3.3V
T
A
= +30°C to +85°C
T
A
= 0°C to +150°C
T
A
= -40°C to +125°C
T
A
= +30°C to +85°C,
T
RJ
= +60°C to +100°C
V
CC
= 3.3V
T
A
, T
RJ
= -40°C to +125°C
T
A
= +30°C to +85°C,
T
RJ
= +100°C to +125°C
V
CC
= 3.3V
T
A
= +30°C to +85°C
T
A
= 0°C to +150°C
T
A
= -40°C to +125°C
-0.85
-1.2
-2.5
-1
-2
-3
-1
-2
-2.75
-1.5
-2.5
-3.5
+0.85
+1.2
+2.5
+1
+2
+3
+1
+2
+2.75
+1.5
+2.5
+3.5
°C
°C
°C
°C
TYP
MAX
3.6
15
600
650
UNITS
V
µA
µA
Bits
°C
3-Sigma Temperature Accuracy
(Remote Channels 1–7)
3-Sigma Temperature Accuracy
(Local)
6-Sigma Temperature Accuracy
(Remote Channels 1–7)
6-Sigma Temperature Accuracy
(Local)
www.maximintegrated.com
Maxim Integrated
│
2
MAX6581
±1°C Accurate 8-Channel Temperature Sensor
Electrical Characteristics (continued)
PARAMETER
Supply Sensitivity of Temperature
Accuracy
SYMBOL
(V
CC
= +3.0V to +3.6V, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at V
CC
= +3.3V and T
A
= +25°C.) (Note 2)
CONDITIONS
MIN
TYP
±0.2
Resistance cancellation mode off
Conversion Time per Channel
t
CONV
Resistance cancellation mode on or beta
compensation on
High level
Remote-Diode Source Current
I
RJ
Low level
High level
Low level
DXP_ and DXN_ Leakage Current
Undervoltage Lockout Threshold
Undervoltage Lockout Hysteresis
Power-On-Reset (POR)
Threshold
POR Threshold Hysteresis
ALERT
and
OVERT
Output Low Voltage
Input Leakage Current
SMBus INTERFACE,
STBY
Logic Input Low Voltage
Logic Input High Voltage
Input Leakage Current
Output Low Voltage
Input Capacitance
Serial-Clock Frequency
Bus Free Time Between STOP
and START Condition
START Condition Setup Time
Repeated START Condition
Setup Time
START Condition Hold Time
STOP Condition Setup Time
Clock Low Period
Clock High Period
Data-In Hold Time
Data-In Setup Time
t
SU:STA
t
HD:STA
t
SU:STO
t
HIGH
t
LOW
V
OL
I
LEAK
V
IL
I
SINK
= 1mA
I
SINK
= 6mA
-1
UVLO
Resistance cancellation
mode off
Resistance cancellation
mode on or beta
compensation on
95
190
80
8
160
16
2.25
1.3
125
250
100
10
200
20
2.80
90
2.0
90
0.01
0.3
+1
0.8
2.2
-1
5
400
1.6
0.6
50
0.6
0.6
1
0.6
0
(Note 5)
100
0.9
+1
0.1
2.2
156
312
120
12
240
24
100
2.95
nA
V
mV
V
mV
V
µA
V
V
µA
V
pF
kHz
µs
µs
ns
µs
µs
µs
µs
µs
ns
µA
ms
MAX
UNITS
°C/V
Standby mode
Falling edge of V
CC
disables ADC
V
CC
falling edge
V
IH
V
OL
C
IN
V
CC
= 3.6V
V
CC
= 3.0V
I
SINK
= 6mA
SMBus-COMPATIBLE TIMING (Figures 3 and 4) (Note 3)
f
SMBCLK
t
BUF
(Note 4)
f
SMBCLK
= 400kHz
f
SMBCLK
= 400kHz
90% of SMBCLK to 90% of SMBDATA,
f
SMBCLK
= 400kHz
10% of SMBDATA to 90% of SMBCLK,
f
SMBCLK
= 400kHz
90% of SMBCLK to 90% of SMBDATA,
f
SMBCLK
= 400kHz
10% to 10%, f
SMBCLK
= 400kHz
90% to 90%
t
HD:DAT
t
SU:DAT
www.maximintegrated.com
Maxim Integrated
│
3
MAX6581
±1°C Accurate 8-Channel Temperature Sensor
Electrical Characteristics (continued)
PARAMETER
Receive SMBCLK/SMBDATA
Rise Time
Receive SMBCLK/SMBDATA Fall
Time
Data-Out Hold Time
Pulse Width of Spike Suppressed
SMBus Timeout
Note
Note
Note
Note
2:
3:
4:
5:
SYMBOL
t
R
t
F
t
DH
t
TIMEOUT
t
SP
(V
CC
= +3.0V to +3.6V, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at V
CC
= +3.3V and T
A
= +25°C.) (Note 2)
CONDITIONS
MIN
TYP
MAX
300
300
50
0
SMBDATA low period for interface reset
25
37
50
45
UNITS
ns
ns
ns
ns
ms
All parameters are tested at T
A
= +85°C. Specifications over temperature are guaranteed by design.
Timing specifications are guaranteed by design.
The serial interface resets when SMBCLK is low for more than t
TIMEOUT
.
A transition must internally provide at least a hold time to bridge the undefined region (300ns max) of SMBCLK’s falling
白光LED光衰原因之荧光粉性能的衰退 到目前，白光 LED、尤其是小功率白光 LED 的发光性能快速衰退已越来越为人们所认识。其实，盲目地夸大宣传，只能将 LED 行业引向歧途，不正视白光 LED 存在的问题，只能延缓白光 LED 应用的发展。只有正视问题、研究问题、尽早解决问题，白光 LED 才能健康、快速发展。 白光 LED 当前面临的一个主要问题就寿命问题。由于白光 LED 的价格尚很...[详细]
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