MAX6639AEE+ Maxim Integrated Products, MAX6639AEE+ Datasheet
MAX6639AEE+
Specifications of MAX6639AEE+
Related parts for MAX6639AEE+
MAX6639AEE+ Summary of contents
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... THERM ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com. o Two Thermal-Diode Inputs 25kHz PWM Output Frequency o Three Selectable SMBus Addresses o Local Temperature Sensor o 1°C Remote Temperature Accuracy o Two PWM Outputs for Fan Drive (Open Drain; Can be Pulled Up to +13 ...
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Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller ABSOLUTE MAXIMUM RATINGS V to GND ..............................................................-0.3V to +4V CC PWM1, PWM2, TACH1, and TACH2 to GND ......-0.3V to +13.5V DXP1 and DXP2 to GND ..........................-0.3V to +(V DXN to GND ...
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Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller ELECTRICAL CHARACTERISTICS (continued +3.0V to +3.6V 0°C to +125°C, unless otherwise noted. Typical values are PARAMETER SYMBOL DIGITAL INPUTS AND OUTPUTS Output Low ...
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Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller (V = 3.3V +25°C STANDBY SUPPLY CURRENT vs. SUPPLY VOLTAGE 3.0 3.5 4.0 4.5 5.0 SUPPLY ...
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Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller (V = 3.3V +25°C PWMOUT FREQUENCY vs. DIE TEMPERATURE -40 - TEMPERATURE (°C) PIN NAME ...
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Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller Block Diagram V CC MAX6639 DXP1 PWM TEMPERATURE GENERATOR DXN PROCESSING BLOCK BLOCK DXP2 ADD SMBus INTERFACE AND SDA REGISTERS SCL GND Write Byte Format S ADDRESS WR 7 bits Slave ...
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Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller HIGH LOW SCL SDA SU:STA HD:STA SU:DAT A = START CONDITION B = MSB OF ADDRESS CLOCKED INTO SLAVE C = LSB OF ADDRESS ...
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Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller Table 2. Temperature Data Byte Format TEMP (°C) TEMP (°C) 241 +241 240 +240 126 +126 25 +25 1.50 1 0.00 0 The MAX6639 employs a register lock mechanism to avoid ...
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Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller written to the duty-cycle registers (26h and 27h). In this mode, the MAX6639 signals a fan fault when the tachometer count is greater than the maximum tachome- ter count value stored ...
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Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller TACH T T MIN-5 MIN 0xFFh TACH MAX TACH A+1 TACH MIN Figure 4. Tachometer Target Calculation are 30h to 60h. Set the value to correspond to the full- rated RPM ...
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Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller Table 4. Register Map REGISTER READ/ POR NO. FUNCTION WRITE STATE ADDRESS 0000 Temperature R 00h 0000 channel 1 0000 Temperature R 01h 0000 channel 2 0000 R 02h Status byte ...
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Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller Table 4. Register Map (continued) REGISTER READ/ POR NO. FUNCTION WRITE STATE ADDRESS Fan 1 0000 R/W 12h configuration 0000 2b Fan 1 0100 R/W 13h configuration 0001 3 Fan 2 ...
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Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller Table 4. Register Map (continued) REGISTER READ/ POR NO. FUNCTION WRITE STATE ADDRESS 0011 Fan 1 target W 26h 1100 duty cycle 0000 Fan 2 current R 27h 0000 duty cycle ...
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Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller Table 5. Fan Duty-Cycle Rate-of-Change SPEC FREQUENCIES REGISTER ...
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Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller Table 8. Temperature Step Size REGISTER 11h FAN CONTROL TEMPERATURE OR 15h STEP SIZE (° Fan 1 and 2 Configuration 2a (11h and 15h) The following registers ...
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Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller Table 10. Tachometer Pulses per Revolution REGISTERS 24h TACHOMETER PULSES PER OR 25h D[7:6] REVOLUTION Fan 1 and 2 Pulses and Min RPM (24h and 25h) D[7:6]: ...
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Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller V CC (12V OR 5V) 4.7kΩ PWM1 3V TO 5.5V 4.7kΩ TACH1 TACH OUTPUT Figure 8. High-Side PWM Drive with “Keep-Alive” Supply V CC 100kΩ 3.3V 4.7kΩ 100kΩ PWM1 2.2μF 3V ...
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Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller Table 11. Summary of Fan-Drive Options FIGURE DESCRIPTION 6 High-side PWM drive 7 Low-side PWM drive 8 High-side PWM drive with keep-alive supply 9 High-side linear supply 10 4-wire fan with ...
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Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller Effect of Series Resistance Series resistance in a sense diode contributes addition- al errors. For nominal diode currents of 10µA and 100µA, change in the measured voltage is: Δ ...
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Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller CPU GPU TO CLOCK THROTTLE 3) Route the DXP and DXN traces parallel and close to each other, away from any high-voltage traces such as +12VDC. Avoid leakage currents from PCB ...
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Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller Chip Information PROCESS: BiCMOS ______________________________________________________________________________________ Package Information For the latest package outline information www.maxim-ic.com/packages. PACKAGE TYPE PACKAGE CODE 16 QSOP E16-1 16 Thin QFN-EP T1655-2 DOCUMENT NO. 21-0055 21-0140 ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 22 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2008 Maxim Integrated Products DESCRIPTION Maxim is a registered trademark of Maxim Integrated Products, Inc ...