LM96063CISDXSLASHNOPB datasheet(2/46 Pages) TI1

2 / 46 page

LM96063

VDD

D+

D-

PWM

SMBDAT

TACH

ALERT

GND

TCRIT

SMBCLK

LM96063

SNIS149B – NOVEMBER 2011 – REVISED MARCH 2013

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Connection Diagram

Figure 1. WSON Package

See Package Number DSC0010A

PIN DESCRIPTIONS

Name

Input/Output

Function and Connection

Open-Drain Digital Output. Connect to system shutdown. Pin activates when

Open-Drain

TCRIT

temperature conversion value exceeds programmed limit. Several power-on-default

Digital Output

limit values are available.

Connect to a low-noise +3.3 ± 0.3 VDC power supply, and bypass to GND with a 0.1 µF

VDD

Power Supply Input

ceramic capacitor in parallel with a 100 pF ceramic capacitor. A bulk capacitance of 10

µF needs to be in the vicinity of the LM96063's VDD pin.

Connect to the anode (positive side) of the remote diode. A 100pF capacitor can be

D+

Analog Input

connected between pins 3 and 4.

Connect to the cathode (negative side) of the remote diode. A 100pF capacitor can be

−

Analog Input

connected between pins 3 and 4.

Open-Drain

Open-Drain Digital Output. Connect to fan drive circuitry. The power-on default for this

PWM

Digital Output

pin is low (pin 4 pulled to ground).

GND

Ground

This is the analog and digital ground return.

Open-Drain

This pin is an open-drain ALERT output.

ALERT

Digital Output

Tachometer input for measuring fan speed. Note the TACH input is disabled upon

TACH

Digital Input

power-up and needs to be enabled for use by setting TCHEN bit 2 of Configuration

Digital Input/

SMBDAT

Open-Drain Digital

This is the bidirectional SMBus data line.

Output

SMBCLK

Digital Input

Digital Input. This is the SMBus clock input.

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