LM99 datasheet(2/20 Pages) NSC

2 / 20 page

Connection Diagram

MSOP-8

20053802

TOP VIEW

Ordering Information

Part Number

Package

Marking

NS Package

Number

Transport

Media

LM99CIMM

T17C

MUA08A

(MSOP-8)

1000 Units on

Tape and Reel

LM99-1CIMM

T20C

MUA08A

(MSOP-8)

1000 Units on

Tape and Reel

LM99CIMMX

T17C

MUA08A

(MSOP-8)

3500 Units on

Tape and Reel

LM99-1CIMMX

T20C

MUA08A

(MSOP-8)

3500 Units on

Tape and Reel

Pin Descriptions

Label

Pin #

Function

Typical Connection

Positive Supply Voltage Input

DC Voltage from 3.0 V to 3.6 V. V

DD should be bypassed

with a 0.1 µF capacitor in parallel with 100 pF to ground.

The 100 pF capacitor should be placed as close as

possible to the power supply pin. A bulk capacitance of

approximately 10 µF needs to be in the vicinity of the LM99

DD.

D+

Diode Current Source

To Diode Anode. Connected to the collector and base of

the remote discrete diode-connected transistor. Connect a

2.2 nF capacitor between pins 2 and 3.

D−

Diode Return Current Sink

To Diode Cathode. Connects to the emitter of the remote

diode-connected transistor. Connect a 2.2 nF capacitor

between pins 2 and 3.

T_CRIT_A

T_CRIT Alarm Output,

Open-Drain, Active-Low

Pull-Up Resistor, Controller Interrupt or Power Supply

Shutdown Control

GND

Power Supply Ground

Ground

ALERT

Interrupt Output, Open-Drain,

Active-Low

Pull-Up Resistor, Controller Interrupt or Alert Line

SMBData

SMBus Bi-Directional Data

Line, Open-Drain Output

From and to Controller, Pull-Up Resistor

SMBCLK

SMBus Input

From Controller, Pull-Up Resistor

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