MAX6651EEE datasheet(4/25 Pages) MAXIM

4 / 25 page

Fan-Speed Regulators and Monitors

with SMBus/I2C-Compatible Interface

MAX6650/MAX6651

Maxim Integrated

Typical Operating Characteristics

(TA = +25°C, unless otherwise noted.)

240

245

255

250

260

265

3.0

4.0

3.5

4.5

5.0

5.5

INTERNAL OSCILLATOR FREQUENCY

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

200

220

260

240

280

300

INTERNAL OSCILLATOR FREQUENCY

vs. TEMPERATURE

TEMPERATURE (

°C)

-50

050

100

VCC = 5.5V

VCC = 3.0V

2.0

2.1

2.3

2.2

2.4

2.5

FEEDBACK VOLTAGE

vs. TEMPERATURE

TEMPERATURE (

°C)

-50

050

100

1.9

1.8

VCC = 5.5V,

VFAN = 5.5V, VFAN = 12.0V

VFAN = 12.0V, VFAN = 5.5V

VCC = 3.0V

1.80

1.85

1.90

1.95

2.00

2.05

2.10

2.15

2.20

3.0

3.5

4.0

4.5

5.0

5.5

FEEDBACK VOLTAGE vs. SUPPLY

VOLTAGE (DAC SET TO 35)

SUPPLY VOLTAGE (V)

VFAN = 5.5V

VFAN = 12.0V

2.0

2.4

2.2

2.8

2.6

3.0

3.2

3.6

3.4

3.8

3.0

3.4

3.8

4.2

4.6

3.2

3.6

4.0

4.4

4.8 5.0

SUPPLY CURRENT

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

1.5

2.0

3.0

2.5

3.5

4.0

-40

-20

100

SUPPLY CURRENT vs. TEMPERATURE

TEMPERATURE (

°C)

VCC = 5.5V

VCC = 3V

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.)

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.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

µs

050

0.6

tSPIKE

tSU:STO

Setup Time for Stop Condition

Pulse Width of Spike Suppressed

MAX6651EEE Datasheet(PDF) 4 Page - Maxim Integrated Products

MAX6651EEE Datasheet(HTML) 4 Page - Maxim Integrated Products

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

Datasheet Download

Link URL