Analog Devices : Power and Thermal Management ICs (Volume 7, Issue 2)


	Volume 7, Issue 2	YOUR SEMICONDUCTOR SOLUTIONS RESOURCE

Efficient and Tiny Power IC Products Extend Battery Life and Functionality >>

Reduce BOM Costs with DC-to-DC Boost Controller >>

Low Dropout Regulators Deliver Accuracy and Reliability >>

Thermal Management IC Simplifies Electronic System Designs >>

DC-to-DC Controller Delivers 14 V Input Range at a 40% Cost Saving >>

High Efficiency Step-Down DC-to-DC Converters >>

CPU Power Controllers Optimized for Next Generation Applications >>

High Efficiency Controller IC for Switch Mode Li-ion Battery Chargers >>

New Quad Channel Voltage Monitor/Sequencer for Communications Applications >>

Hot Swap with Integrated Digital Power Monitors Safeguard Line Cards >>

Dual Comparators with Integrated Reference and Programmable Hysterersis >>

Precise Temperature Control Independent of the Microprocessor >>

Low Voltage, High Accuracy Microprocessor Supervisory Circuit >>

All prices in this bulletin are in USD in quantities greater than 1000 (unless otherwise noted), recommended lowest grade resale, FOB U.S.A.

Thermal Management IC Simplifies the Design, Operation, and Maintenance of Today's Demanding and Complex Electronic Systems

n many of today's increasingly complex electronic systems, temperature, voltage, and fan speed are measured and controlled by numerous discrete sensors scattered throughout the system—making them inefficient and costly to design, build, and maintain.

The ADT7462 is a flexible systems monitor IC, suitable for use in a wide variety of applications. It can monitor temperature and voltage, control fan speed of the device, and also includes general digital pins, alert inputs and outputs—all housed in a small 32-lead LFCSP package.

In addition to measuring ambient temperature, the device can monitor the temperature in up to three remote locations. Using this information, the ADT7462 monitors four fans to control and manage temperature. The enhanced acoustics and dynamic T_MIN features allow for very quiet fan operation in acoustically sensitive applications. The device monitors the speed of up to eight fans, and the alert output indicates when a fan has stalled and fan speed has fallen below the programmed limit.

The ADT7462 integrates additional functionality to simplify designs without compromising battery power. It can monitor up to 13 voltages including a dedicated V_BATT input to measure coin cell batteries without draining the battery itself. The chassis intrusion input can be used to detect whether a system chassis has been interfered with—even if the system is powered off.

Click here to view full size image
ADT7462

• 1 local and up to 3 remote temperature channels
• Series resistance cancellation on remote channels
• Up to 4 PWM fan drive outputs
• Supports both high and low frequency PWM drives
• Up to 8 TACH inputs
• Measures the speed of 3-wire and 4-wire fans
• Automatic fan speed control loop
• Includes dynamic T_MIN control
• Monitors up to 13 voltage inputs
• Monitors up to 7 VID inputs
• Bidirectional reset
• Chassis intrusion detect
• Compatible with SMBus 1.1 and SMBus 1.0
• Operation: 3.3 V and 5 V
• Extended operating range: –40°C to +125°C


		To learn more on "Why and How to Control Fan Speed for Cooling Electronic Equipment," visit www.analog.com/fancontrol.

Tune your system for peak power efficiency using one of ADI's efficient and versatile power supply controllers. For a complete product listing, visit www.analog.com/powercontrollers.