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Part Number: ADT7462
Description: The ADT7462 is a flexible systems monitor IC, suitable for use in a wide variety of applications. It c...
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ADT7462
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DataSheet
General Description
ADT7462 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.
The ADT7462 is fully compatible with SMBus 1.1 and SMBus 1.0. The ADT7462 also includes a THERM I/O and a RESET I/O.
The ADT7462 is available in a 32-lead LFCSP_VQ. Many of the pins are multifunctional. There are five easy configuration options, which are set up using the easy configuration register. Users pick the configuration closest to their requirements; individual pins can be reconfigured after the easy configuration option has been chosen.
ADT7462 Maximum Ratings
| Parameter | Rating |
| Supply Voltage | 6.5 V |
| Voltage on +12V Pin | 20 V |
| Voltage on VBATT Pin | 4 V |
| Voltage on Any Other Input or Output Pin |
−0.3 V to +6.5 V |
| Input Current at Any Pin | ±5 mA |
| Package Input Current | ±20 mA |
| Maximum Junction Temperature | 150°C |
| Operating Temperature Range | −40°C to +125°C |
| Storage Temperature Range | −65°C to +150°C |
| Lead Temperature (Soldering 10 sec) IR Reflow Peak Temperature ESD Rating |
300°C 260°C 1500 V |
ADT7462 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
·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
ADT7462 Typical Application
·Servers and personal computers
·Telecommunications equipment
·Test equipment and measurement instruments
·Telecommunications equipment
·Test equipment and measurement instruments
ADT7462 Connection Diagram
ADT7462
PDF/DataSheet Download
- Datasheet: ADT7462
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