MAX6651 View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX6651 Datasheet PDF : 25 Pages
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MAX6650/MAX6651
Fan-Speed Regulators and Monitors
with SMBus/I2C-Compatible Interface
ABSOLUTE MAXIMUM RATINGS
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
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.
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.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
POWER SUPPLY (VCC)
Supply Voltage
VCC
Supply Current
ICC
Full-on mode, IOUT = 0
OUTPUT (OUT)
Output Voltage Range
VOUT IOUT = ±100µA
Output Sink Current
ISINK VOUT = 0.5V
Output Source Current
ISOURCE VOUT = VCC - 1.8V
TACHOMETER INPUTS (TACH_)
Tachometer Threshold
5V fan, 0 < VFB < 4.5V
VTACH_ 12V fan, 0 < VFB < 9V
Tachometer Input Impedance RTACH_ 0 < VTACH < 9V
FEEDBACK (FB)
DAC Differential Nonlinearity
Guaranteed monotonicity on FB (Note 1)
Useful DAC Resolution
Measured at FB (Note 1)
Feedback Input Impedance
RFB 0 < VFB < 9V
GENERAL-PURPOSE INPUTS/OUTPUTS (GPIO_) (Note 2)
Input Low Voltage
VIL(GPIO_)
Input High Voltage
VIH(GPIO_)
VCC ≤ 3.6V
VCC > 3.6V
Input Hysteresis
VHYS
Pullup Resistor
RGPIO_
Output Sink Current
IGPIO_ VGPIO_ = 0.4V
3.0
5.5
V
10
mA
0.3
VCC - 0.3 V
10
mA
50
mA
VFB + 0.5
VFB + 1.0
VFB +1.5
V
VFB +3
70
100
150
kΩ
5
LSB
8
bits
70
100
150
kΩ
0.8
V
2
V
3
200
mV
100
kΩ
10
mA
2
Maxim Integrated
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