Datasheet

Pin Descriptions

Label Pin

Function Typical Connection

1, 5, 9,

13, 16

Manufacturing test pins. Left floating. PC board traces may be routed

through the pads for these pins. Although, the

components that drive these traces should share

the same supply as the LM84 so that the Absolute

Maximum Voltage at any Pin rating is not violated.

Positive Supply Voltage

Input

DC Voltage from 3.0V to 3.6V

D+ 3

Diode Current Source To Diode Anode. Connected to remote discrete

diode or to the diode on the external IC whose die

temperature is being sensed.

D− 4

Diode Return Current

Sink

To Diode Cathode. Must be grounded when not

used.

ADD0–ADD1 10, 6

User-Set SMBus (I

Address Inputs

Ground (Low, “0”), V

(High, “1”) or open

(“TRI-LEVEL”)

GND 7, 8 Power Supply Ground Ground

T_CRIT_A

Critical Temperature

Alarm, open-drain output

Pull Up Resistor, Controller Interrupt Line or

System Shutdown

SMBData 12

SMBus (I

C) Serial

Bi-Directional Data Line,

open-drain output

From and to Controller, Pull Up Resistor

SMBCLK 14 SMBus (I

C) Clock Input From Controller

NC 15

No Connection Left floating. PC board traces may be routed

through the pads for this pin.

LM84