Features- Two Programmable Fan Control circuits
4-wire fan compatible
High speed PWM (26khz)
Low speed PWM (9.5Hz - 2240Hz)
600mA, 5V, High Side Fan Driver
Optional fan aging detection
1mA Linear DAC Fan Driver
- 4-wire fan compatible
- High speed PWM (26khz)
- Low speed PWM (9.5Hz - 2240Hz)
- 600mA, 5V, High Side Fan Driver
- Optional fan aging detection
- 1mA Linear DAC Fan Driver
- RPM based fan control algorithm
2% accuracy from 500RPM to 16k RPM
- 2% accuracy from 500RPM to 16k RPM
- Temperature Look-Up Table
Allows programmed fan response to temperature
1 to 4 thermal zones to control each fan driver
Controls fan speed or fan drive setting
Allows externally generated temperature data to control fan drivers including two DTS channels
- Allows programmed fan response to temperature
- 1 to 4 thermal zones to control each fan driver
- Controls fan speed or fan drive setting
- Allows externally generated temperature data to control fan drivers including two DTS channels
- Up to Four External Temperature Channels
Designed to support 45nm, 60nm, and 90nm CPUs
Automatically detects and supports CPUs requiring the BJT or Transistor models
Resistance error correction
1°C accurate (60°C to 100°C)
0.125°C resolution
Detects fan aging and variation
- Designed to support 45nm, 60nm, and 90nm CPUs
- Automatically detects and supports CPUs requiring the BJT or Transistor models
- Resistance error correction
- 1°C accurate (60°C to 100°C)
- 0.125°C resolution
- Detects fan aging and variation
- Three dedicated comparator outputs for External Diode 1, External Diode 2, and External Diode 3 (OVERT1#, OVERT2#, OVERT3#)
- Up to three thermistor compatible voltage inputs
- Hardware Programmable Thermal Shutdown Temperature
Cannot be altered by software
60°C to 122°C Range or 92°C to 154°C Range
- Cannot be altered by software
- 60°C to 122°C Range or 92°C to 154°C Range
- Programmable High and Low Limits for all channels
- 3.3V Supply Voltage
- SMBus 2.0 Compliant
2 selectable SMBus addresses
SMBus Alert compatible
Option to load register set from external EEPROM
- 2 selectable SMBus addresses
- SMBus Alert compatible
- Option to load register set from external EEPROM
- Available in 28-pin QFN package - RoHS compliant (5mm x 5mm)
- Notebook Computers
- Embedded Applications
- Projectors
- Industrial and Networking Equipment
| Parameter|
Parameter Name
Value
| Value | |
comments
Multi Fan Controller with Thermal Mgt
|
Multi Fan Controller with Thermal Mgt
| |
# Fans Drivers
2
|
2
| |
PWM/Linear Control
PWM and Linear
|
PWM and Linear
| |
Ambient Temperature Sensor
1
|
1
| |
Typical Accuracy
±0.25
|
±0.25
| |
Max Accuracy
±1.0
|
±1.0
| |
Maximum Temperature Range
-40 to 85
|
-40 to 85
| |
Vcc Range (V)
3.3 to 5.0
|
3.3 to 5.0
| |
SMBus Alert
Yes
|
Yes
| |
System Shutdown
Yes
|
Yes
| |
Voltage Monitors
Yes
|
Yes
|
|
