Datasheet

LM95233

www.ti.com

SNIS145E –AUGUST 2006–REVISED MARCH 2013

PIN DESCRIPTIONS

Label Pin # Function Typical Connection

NC 1 No Connect Not connected. May be left floating, connected to GND or V

2 Positive Supply Voltage Input DC Voltage from 3.0 V to 3.6 V. V

should be bypassed with

a 0.1µF capacitor in parallel with 100pF. The 100pF capacitor

should be placed as close as possible to the power supply pin.

Noise should be kept below 200 mVp-p, a 10 µF capacitor may

be required to achieve this.

NC 3 No Connect Not connected. May be left floating, connected to GND or V

NC 4 No Connect Not connected. May be left floating, connected to GND or V

D− 5 Diode Return Current Sink To all Diode Cathodes. Common D- pin for all two remote

diodes.

D2+ 6 Diode Current Source To second Diode Anode. Connected to remote discrete diode-

connected transistor junction or to the diode-connected

transistor junction on a remote IC whose die temperature is

being sensed. A capacitor is not required between D2+ and D-.

A 100 pF capacitor between D2+ and D- can be added and

may improve perfomance in noisy systems. Float this pin if this

thermal diode is not used.

D1+ 7 Diode Current Source To first Diode Anode. Connected to remote discrete diode-

connected transistor junction or to the diode-connected

transistor junction on a remote IC whose die temperature is

being sensed. A capacitor is not required between D1+ and D-.

A 100 pF capacitor between D1+ and D- can be added and

may improve perfomance in noisy systems. Float this pin if this

thermal diode is not used.

GND 8 Power Supply Ground System low noise ground.

A0 9 Digital Input SMBus slave address select pin. Selects one of three

addresses. Can be tied to V

, GND, or to the middle of a

resistor divider connected between V

and GND.

TCRIT1 10 Digital Output, Open-Drain Critical temperature output 1. Requires pull-up resistor. Active

"LOW".

TCRIT2 11 Digital Output, Open-Drain Critical temperature output 2. Requires pull-up resistor. Active

"LOW".

SMBDAT 12 SMBus Bi-Directional Data Line, From and to Controller; may require an external pull-up resistor

Open-Drain Output

SMBCLK 13 SMBus Clock Input From Controller; may require an external pull-up resistor

TCRIT3 14 Digital Output, Open-Drain Critical temperature output 3. Requires pull-up resistor. Active

"LOW".

N/A N/A Thermal pad Connect the thermal pad to GND.

Product Folder Links: LM95233