Datasheet
Control
Logic
Local
Temp
Registers
Remote
Temp
Registers
SMBus Serial Interface
6'Converter
3.0V-3.6V
SMBDAT
SMBCLK
Limit &
Hyst
Registers
General
Config
Registers
Status
Registers
Remote
Diode
Selector
D+
D-
Local
Diode Selector
LM95245
Temperature
Sensor
Circuitry
-
+
-
+
T_CRIT
ID
Registers
TruTherm &
Diode Config
Registers
OS
/A0
1
4
6
7
8
5
2
3
LM95245
SMBCLK
SMBDAT
V
DD
D-
1
2
3
4 5
6
7
8
GND
OS/A0
D+
T_CRIT
LM95245
SNIS148G –OCTOBER 2007–REVISED MARCH 2013
www.ti.com
Connection Diagram
Top View
Figure 1. VSSOP-8 and SOIC-8 Packages
see package numbers DGK0008A, D0008A
Simplified Block Diagram
Table 1. Pin Descriptions
Pin
Name Type Description
Number
Device power supply. Requires bypass capacitor of 10 µF in parallel with 0.1 µF and
1 V
DD
Power
100 pF. Place 100 pF closest to device pin.
2 D+ Analog Input/Output Positive input from the thermal diode.
3 D- Analog Input/Output Negative input from the thermal diode.
4 T_CRIT Digital Output Critical temperature output. Open-drain output requires pull-up resistor. Active low.
5 GND Ground Device ground.
Over-temperature shutdown comparator output or SMBus slave address input. Defaults as
an SMBus slave address input that selects one of three addresses. Can be tied to V
DD
,
6 OS/A0 Digital Input/Output
GND, or to the middle of a resistor divider connected between V
DD
and GND. When
programmed as an OS comparator output it is active low and open drain.
7 SMBDAT Digital Input/Output SMBus interface data pin. Open-drain output requires pull-up resistor.
8 SMBCLK Digital Input SMBus interface clock pin.
2 Submit Documentation Feedback Copyright © 2007–2013, Texas Instruments Incorporated
Product Folder Links: LM95245