MAX6643LBBAEE+ Maxim Integrated Products, MAX6643LBBAEE+ Datasheet - Page 14

• Manufacturer Part Number: MAX6643LBBAEE+
• Description: IC CNTRLR FAN SPEED 16-QSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX6643LBBAEE+

• Function: Fan Control, Temp Monitor
• Topology: ADC, PWM Generator, Tach Counter
• Sensor Type: External & Internal
• Sensing Temperature: -40°C ~ 125°C, External Sensor
• Output Type: PWM
• Output Alarm: Yes
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP
• Full Temp Accuracy: +/- 3.5 C, +/- 3 C
• Digital Output - Bus Interface: Serial (2-Wire)
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Automatic PWM Fan-Speed Controllers with
Overtemperature Output
14
MAX6643
LBFAEE
MAX6643
LBBAEE
MAX6644
LBAAEE
M AX 6645
ABFAU B
PART
______________________________________________________________________________________
TOP VIEW
(FULLSPD)
() ARE FOR MAX6643_A ONLY.
TACHSET
FULLSPD
FANFAIL
GND
DXP
TH1
TL2
TL1
QSOP-16
QSOP-16
QSOP-16
µMAX-10
1
2
6
3
4
5
7
8
MAX6643
QSOP
0.5
0.5
0.5
0.5
8
8
8
8
16
15
14
13
12
11
10
9
V
TH2
OT1
OT2
PWM_OUT
FAN_IN1
FAN_IN2
OT
DD
40
30
30
40
TACHSET
FANFAIL
DXP2
DXP1
40
30
40
GND
TH1
0
TL2
TL1
1
2
6
3
4
5
7
8
Remote,
Remote,
Remote,
Remote,
remote
remote
local
local
MAX6644
QSOP
15 to
15 to
15 to
55
55
55
45
16
15
14
13
12
11
10
9
V
TH2
OT1
OT2
PWM_OUT
FAN_IN1
FAN_IN2
OT
20 to
20 to
20 to
DD
60
60
60
50
TACHSET
FANFAIL
60 to
60 to
60 to
100
100
100
DXP2
DXP1
75
GND
1
2
3
4
5
FULLSPD
FULLSPD
Pin Configurations
—
—
MAX6645
MAX
Selector Guide
r otor /tach/
r otor /tach/
Tach/off
Tach/off
Locked
Locked
cur r ent
cur r ent
sense
sense
10
9
8
7
6
V
PWM_OUT
FAN_IN1
FAN_IN2
OT
DD
r otor /tach/
r otor /tach/
Tach/off
Tach/off
Locked
Locked
cur r ent
cur r ent
sense
sense