MAX6663AEE+ Maxim Integrated Products, MAX6663AEE+ Datasheet - Page 19

• Manufacturer Part Number: MAX6663AEE+
• Description: IC TEMP MON FAN CNTRL 16-QSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX6663AEE+

• Function: Fan Control, Temp Monitor
• Topology: ADC, Multiplexer, Register Bank, Tachometer
• Sensor Type: External & Internal
• Sensing Temperature: -40°C ~ 125°C, External Sensor
• Output Type: I²C™/SMBus™
• 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: +/- 1 C
• Digital Output - Bus Interface: Serial (2-Wire)
• Digital Output - Number Of Bits: 11 bit
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Addr(H)
23
24
25
READ/WRITE POR STATE
R/W
R/W
R/W
______________________________________________________________________________________
0101 1101
0100 0001
0110 0001
Fan filter register:
Bit 7: Fan spin-up disable:
Bits [6:5]: Fan ramp rate: These bits set the amount the PWM duty cycle can change
Bits [4:2]: Temperature measurement rate (see Table 5).
Bit 1: Unused.
Bit 0: Fan filter enable. Setting the bit to 1 enables the fan filter function.
Local temp T
Bits [7:3]: Local T
Bits [2:0]: Local T
Remote temp T
Bits [7:3]: Remote T
Bits [2:0]: Remote T
0: Spin-up enabled; 1: spin-up disabled.
on each monitoring cycle:
00 = 1 (0.416%)
01 = 2 (0.833%)
10 = 4 (1.667%) (default)
11 = 8 (3.333%)
control mode. When the remote temperature exceeds this value, the PWM
output becomes active.:
00000 = 0
00001 = +4
01100 = +48
11110 = +120
1111 = +124
speed control mode. When the temperature reaches T
PWM duty cycle reaches 100%:
000 = +5
001 = +10
010 = +20
011 = +40
100 = +80
mode. When the local temperature exceeds this value, the PWM output
becomes active:
00000 = 0
00001 = +4
01000 = +32
11110 = +120
11111 = +124
speed control mode. When the temperature reaches T
PWM duty cycle reaches 100%:
000 = +5
001 = +10
010 = +20
011 = +40
100 = +80
MIN
Temperature Monitors and
MIN
/ T
|
|
|
MIN
RANGE
0
|
0
C
0
/T
0
0
0
0
C
RANGE
0
C
0
0
0
0
MIN
RANGE
C (default)
C
C
C
C
0
C (default)
C
C
C
: Contains the temp threshold for the automatic fan-speed control
0
RANGE
C
0
0
C
0
C (default)
C
C (default)
0
. Contains the temp threshold for the automatic fan-speed
0
0
C
C
C
: Contains the local temperature range for automatic fan-
: Contains the remote temperature range for automatic fan-
register:
register:
PWM Fan Controllers
Register Summary (continued)
DESCRIPTION
MIN
MIN
+ T
+ T
RANGE
RANGE
, the
, the
19