Overview
The ADT7462ACPZ-R7, produced by onsemi, is a highly versatile systems monitor IC designed for a wide range of applications. This integrated circuit is capable of monitoring temperature at up to four locations (one local and three remote), as well as controlling fan speeds and monitoring various voltage inputs. It supports both high and low frequency PWM for fan control and includes multiple TACH inputs to measure fan speeds. The ADT7462 is fully compatible with SMBus 1.1 and SMBus 1.0 protocols and operates within an extended temperature range of −40°C to +125°C. It is packaged in a 32-lead LFCSP_VQ, which is a space-saving chip scale package.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | 3.0 | 3.3 | 5.5 | V |
| Supply Current (ICC) | - | 1.5 | 4.0 | mA |
| Internal Sensor Accuracy (0°C ≤ TA ≤ 85°C) | - | - | ±0.5 | °C |
| Remote Sensor Accuracy (−40°C ≤ TD ≤ +100°C) | - | - | ±3.25 | °C |
| Temperature Resolution | - | - | 0.25 | °C |
| Conversion Time (Local Temperature) | - | 9.01 | 10.38 | ms |
| Conversion Time (Remote Temperature) | - | 38.36 | 42.09 | ms |
| Operating Temperature Range | -40 | - | 125 | °C |
Key Features
- One local and up to three remote temperature channels with series resistance cancellation on remote channels.
- Thermal protection using THERM pins.
- Up to four PWM fan drive outputs supporting both high and low frequency PWM drives.
- Up to eight TACH inputs to measure the speed of 3-wire and 4-wire fans.
- Automatic fan speed control loop with dynamic TMIN control.
- Monitors up to 13 voltage inputs and up to 7 VID inputs with on-the-fly (OTF) VID support.
- Bidirectional reset and chassis intrusion detect.
- SMBus 1.1 and SMBus 1.0 compatible.
- 3.3 V and 5.0 V operation.
- Extended operating range from −40°C to +125°C.
- Space-saving 32-lead chip scale package (LFCSP_VQ).
- Pb-Free device.
Applications
- Servers and personal computers.
- Telecommunications equipment.
- Test equipment and measurement instruments.
Q & A
- What is the ADT7462ACPZ-R7 used for?
The ADT7462ACPZ-R7 is a systems monitor IC used for temperature monitoring, voltage monitoring, and fan control in various applications.
- How many temperature channels does the ADT7462 support?
The ADT7462 supports one local and up to three remote temperature channels.
- What types of fans does the ADT7462 support?
The ADT7462 supports both 2-wire, 3-wire, and 4-wire fans with high and low frequency PWM drives.
- How many TACH inputs are available on the ADT7462?
There are up to eight TACH inputs available to measure the speed of fans.
- What is the operating voltage range of the ADT7462?
The ADT7462 operates within a supply voltage range of 3.0 V to 5.5 V.
- Is the ADT7462 compatible with SMBus protocols?
Yes, the ADT7462 is fully compatible with SMBus 1.1 and SMBus 1.0 protocols.
- What is the temperature accuracy of the internal sensor?
The internal sensor accuracy is ±0.5°C within the 0°C to 85°C temperature range.
- What is the package type of the ADT7462?
The ADT7462 is packaged in a 32-lead LFCSP_VQ (chip scale package).
- Is the ADT7462 a Pb-Free device?
Yes, the ADT7462 is a Pb-Free device.
- What are some common applications of the ADT7462?
Common applications include servers, personal computers, telecommunications equipment, and test equipment.
