GENERAL DESCRIPTION
The ADT7462 is a flexible systems monitor IC, suitable for use in a wide variety of applications. It can monitor temperature in up to three remote locations, as well as its ambient temperature.
There are up to four PWM outputs. These can be used to control the speed of a cooling fan by varying the % duty cycle of the PWM drive signal applied to the fan. The ADT7462 supports high frequency PWM for 4-wire fans and low frequency PWM for 2-wire and 3-wire fans. There are up to eight TACH inputs, which can be used to measure the speed of 3-wire and 4-wire fans. There are up to 13 voltage monitoring inputs, ranging from 12 V to 0.9 V.

FEATURES
    One local and up to three remote temperature channels
        Series resistance cancellation on remote channels
    Thermal protection using THERM pins
    Up to four PWM fan drive outputs
        Supports both high and low frequency PWM drives
    Up to eight TACH inputs
        Measures the speed of 3-wire and 4-wire fans
    Automatic fan speed control loop
        Includes dynamic TMIN control
    Monitors up to 13 voltage inputs
    Monitors up to 7 VID inputs
        Includes VID-on-fly support
    Bidirectional reset
    Chassis intrusion detect
    SMBus 1.1- and SMBus 1.0-compatible
    3.3 V and 5 V operation
    Extended operating range from −40°C to +125°C
    Space-saving 32-lead chip scale package

 APPLICATIONS
    Servers and personal computers
    Telecommunications equipment
    Test equipment and measurement instruments