MAX6615
MAX6615
PRODUCTIONDual-Channel Temperature Monitors and Fan-Speed Controllers with Thermistor Inputs
Industry's Only Dual-Channel Temperature Monitor and Fan Controllers with Thermistor Inputs
- Part Models
- 2
- 1ku List Price
- Starting From $3.32
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Overview
- Two Thermistor Inputs
- Two Open-Drain PWM Outputs for Fan-Speed Control
- Local Temperature Sensor
- Six GPIOs (MAX6616)
- Programmable Fan-Control Characteristics
- Controlled PWM Rate-of-Change Ensures Unobtrusive Fan-Speed Adjustments
- Fail-Safe System Protection
- Active-Low OT Output for Throttling or Shutdown
- Nine Different Pin-Programmable SMBus Addresses
- 16-Pin and 24-Pin QSOP Packages
The MAX6615/MAX6616 monitor two temperature channels, either the internal die temperature and the temperature of an external thermistor, or the temperatures of two external thermistors. The temperature data controls a PWM output signal to adjust the speed of a cooling fan, thereby minimizing noise when the system is running cool, but providing maximum cooling when power dissipation increases. The fans' tachometer output signals are monitored by the MAX6615/MAX6616 to detect fan failure. If a fan failure is detected, the active-low FAN_FAIL output is asserted.
The 2-wire serial interface accepts standard system management bus (SMBus™) write byte, read byte, send byte, and receive byte commands to read the temperature data and program the alarm thresholds. The programmable alarm output can be used to generate interrupts, throttle signals, or overtemperature shutdown signals.
The MAX6616 features six GPIOs to provide additional flexibility. All of the GPIOs power-up as inputs, with the exception of GPIO0, which powers up as either an input or an output as determined by connecting the PRESET pin to ground or VCC.
The MAX6616 is available in a 24-pin QSOP package, while the MAX6615 is available in a 16-pin QSOP package. Both devices operate from a single-supply voltage range of 3.0V to 5.5V, have operating temperature ranges of -40°C to +125°C, and consume just 500µA of supply current.
Applications
- Desktop Computers
- Networking Equipment
- Power Supplies
- Servers
- Workstations
Documentation
Data Sheet 1
Design Note 1
Technical Articles 2
3rd Party Solutions 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX6615AEE+ | QSOP | ||
| MAX6615AEE+T | QSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Apr 20, 2026 - 2571B PIN/ERRATA |
||
| MAX6615AEE+T | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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| Parts | Product Life Cycle | Description |
|---|---|---|
| Fan Speed & Thermoelectric Cooler (TEC) Controllers 4 | ||
| MAX6639 | PRODUCTION | 2-Channel Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller |
| MAX6678 | Obsolete | 2-Channel Temperature Monitor with Dual Automatic PWM Fan-Speed Controller and Five GPIOs |
| MAX6643 | PRODUCTION | Automatic PWM Fan-Speed Controllers with Overtemperature Output |
| MAX6641 | PRODUCTION | SMBus-Compatible Temperature Monitor with Automatic PWM Fan-Speed Controller |