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MAX6650 Datasheet(PDF) 2 Page - Maxim Integrated Products |
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MAX6650 Datasheet(HTML) 2 Page - Maxim Integrated Products |
2 / 25 page Fan-Speed Regulators and Monitors with SMBus/I2C-Compatible Interface 2 Maxim Integrated MAX6650/MAX6651 ABSOLUTE MAXIMUM RATINGS ELECTRICAL CHARACTERISTICS (VCC = 3.0V to 5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C and VCC = 5V.) Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. VCC to GND ..............................................................-0.3V to +6V FB, TACH_ ..........................................................-0.3V to +13.2V All Other Pins..............................................-0.3V to (VCC + 0.3V) Output Voltages..........................................-0.3V to (VCC + 0.3V) Maximum Current Into VCC, GND, VOUT ...................................................100mA Into All Other Pins ..........................................................50mA Continuous Power Dissipation (TA = +70°C) µMAX (derate 5.6mW/°C above +70°C) .....................444mW QSOP (derate 8.3mW/°C above +70°C) .....................667mW Operating Temperature Range ...........................-40°C to +85°C Junction Temperature .....................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C Soldering Temperature (reflow) Lead(Pb)-free..............................................................+260°C Containing lead(Pb) ....................................................+240°C Input Low Voltage Input Hysteresis VHYS 200 mV Tachometer Threshold VTACH_ VFB + 1.0 VFB +3 V 12V fan, 0 < VFB < 9V PARAMETER SYMBOL MIN TYP MAX UNITS Output Source Current ISOURCE 50 mA Output Sink Current ISINK 10 mA Output Voltage Range VOUT 0.3 VCC - 0.3 V VFB + 0.5 VFB +1.5 Tachometer Input Impedance RTACH_ 70 100 150 k Ω Supply Voltage VCC 3.0 5.5 V Supply Current ICC 10 mA DAC Differential Nonlinearity 5 LSB Useful DAC Resolution 8 bits Feedback Input Impedance RFB 70 100 150 k Ω Output Sink Current IGPIO_ 10 mA CONDITIONS Guaranteed monotonicity on FB (Note 1) VOUT = VCC - 1.8V Measured at FB (Note 1) VOUT = 0.5V IOUT = ±100µA 5V fan, 0 < VFB < 4.5V 0 < VFB < 9V 0 < VTACH < 9V VGPIO_ = 0.4V Full-on mode, IOUT = 0 V 0.8 VIL(GPIO_) Input High Voltage V 2 VCC ≤ 3.6V VIH(GPIO_) 3 VCC > 3.6V Pullup Resistor RGPIO_ 100 k Ω TACHOMETER INPUTS (TACH_) FEEDBACK (FB) GENERAL-PURPOSE INPUTS/OUTPUTS (GPIO_) (Note 2) POWER SUPPLY (VCC) OUTPUT (OUT) |
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