Rainbow Electronics LM99 - Manual (Page 4)

Absolute Maximum Ratings
(Note 1)
Supply Voltage −0.3 V to 6.0 V
Voltage at SMBData, SMBCLK,
ALERT, T_CRIT_A −0.5 V to 6.0 V
Voltage at Other Pins −0.3 V to
(V
DD
+ 0.3 V)
D− Input Current ± 1 mA
Input Current at All Other Pins
(Note 2)
± 5 mA
Package Input Current
(Note 2)
30 mA
SMBData, ALERT, T_CRIT_A Output
Sink Current 10 mA
Storage Temperature −65˚C to
+150˚C
Soldering Information, Lead Temperature
MSOP-8 Packages (Note 3)
Vapor Phase (60 seconds) 215˚C
Infrared (15 seconds) 220˚C
ESD Susceptibility (Note 4)
Human Body Model 2000 V
Machine Model 200 V
Operating Ratings
(Notes 1, 5)
Operating Temperature Range 0˚C to +125˚C
Electrical Characteristics
Temperature Range T
MIN
≤ T
A
≤ T
MAX
LM99 0˚C ≤ T
A
≤ +85˚C
Supply Voltage Range (V
DD
) +3.0 V to +3.6 V
Temperature-to-Digital Converter Characteristics
Unless otherwise noted, these specifications apply for V
DD
= +3.0 Vdc to +3.6 Vdc. Boldface limits apply for T
A
= T
J
= T
MIN
≤ T
A
≤ T
MAX
; all other limits T
A
= T
J
= +25˚C, unless otherwise noted.
Parameter Conditions Typical Limits Units
(Note 6) (Note 7) (Limit)
Temperature Error Using Local Diode T
A
= +25˚C to +125˚C, (Note 8) ± 1 ± 3 ˚C (max)
Temperature Error Using Remote Diode
Connected Transistor (T
D
is the Remote
Diode Junction Temperature)
T
D
= T
LM99
+ 16˚C
T
A
= +30˚C to +50˚C and T
D
=
+120˚C to +140˚C
± 1 ˚C (max)
T
A
= +0˚C to +85˚C and T
D
=
+25˚C to +140˚C
± 3
˚C (max)
Remote Diode Measurement Resolution 11 Bits
0.125 ˚C
Local Diode Measurement Resolution 8 Bits
1 ˚C
Conversion Time of All Temperatures at the
Fastest Setting
(Note 10) 31.25 34.4 ms (max)
Quiescent Current (Note 9) SMBus Inactive, 16 Hz
conversion rate
0.8 1.7 mA (max)
Shutdown 315 µA
D− Source Voltage 0.7 V
Diode Source Current (V
D+
− V
D−
) = + 0.65 V; high
level
160 315 µA (max)
110 µA (min)
Low level 13 20 µA (max)
7 µA (min)
ALERT and T_CRIT_A Output Saturation
Voltage
I
OUT
= 6.0 mA 0.4
V (max)
Power-On-Reset (POR) Threshold Measure on V
DD
input, falling
edge
2.4
1.8
V (max)
V (min)
Local and Remote HIGH Default Temperature
settings
(Note 11) Add 16˚C for true
Remote Temperature.
+70 ˚C
Local and Remote LOW Default Temperature
settings
(Note 11) Add 16˚C for true
Remote Temperature.
0 ˚C
Local T_CRIT Default Temperature Setting (Note 11) +85 ˚C
Remote T_CRIT Default Temperature Setting (Note 11) Add 16˚C for 126˚C
true Remote T_CRIT Setting
+110 ˚C
LM99
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