MAX6650 View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX6650 Datasheet PDF : 25 Pages
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MAX6650/MAX6651
Fan-Speed Regulators and Monitors
with SMBus/I2C-Compatible Interface
TIMING CHARACTERISTICS (continued)
(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
Setup Time for Stop Condition tSU:STO
Pulse Width of Spike Suppressed tSPIKE
CONDITIONS
MIN TYP MAX UNITS
0.6
µs
0
50
ns
Note 1: For proper measurement of VFB, connect OUT and FB as shown in the Typical Operating Circuit.
Note 2: GPIO2, GPIO3, and GPIO4 only in the MAX6651.
Note 3: Guaranteed by design and not 100% production tested.
Note 4: For RADD component test purposes only.
Note 5: Note that the transition must internally provide at least a hold time to bridge the undefined region (300ns max) of SCL’s
falling edge.
Note 6: CB is the total capacitance of one bus line in pF. Tested with CB = 400pF. Rise and fall times are measured between 0.3 x
VCC and 0.7 x VCC.
(TA = +25°C, unless otherwise noted.)
INTERNAL OSCILLATOR FREQUENCY
vs. SUPPLY VOLTAGE
265
260
255
250
245
240
3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
FEEDBACK VOLTAGE vs. SUPPLY
VOLTAGE (DAC SET TO 35)
2.20
2.15
VFAN = 5.5V
2.10
2.05
2.00
VFAN = 12.0V
1.95
1.90
1.85
1.80
3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
Typical Operating Characteristics
INTERNAL OSCILLATOR FREQUENCY
vs. TEMPERATURE
300
280
VCC = 5.5V
260
240
VCC = 3.0V
220
200
-50
0
50
100
TEMPERATURE (°C)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
3.8
3.6
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
3.0 3.2 3.4 3.6 3.8 4.0 4.2 4.4 4.6 4.8 5.0
SUPPLY VOLTAGE (V)
2.5
2.4
2.3
2.2
2.1
2.0
1.9
1.8
-50
FEEDBACK VOLTAGE
vs. TEMPERATURE
VCC = 5.5V,
VFAN = 5.5V, VFAN = 12.0V
VFAN = 12.0V, VFAN = 5.5V
VCC = 3.0V
0
50
100
TEMPERATURE (°C)
SUPPLY CURRENT vs. TEMPERATURE
4.0
VCC = 5.5V
3.5
3.0
2.5
VCC = 3V
2.0
1.5
-40 -20
0 20 40 60
TEMPERATURE (°C)
80 100
4
Maxim Integrated
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