参数资料
型号: MAX6644LBAAEE+T
厂商: Maxim Integrated
文件页数: 9/17页
文件大小: 208K
描述: IC CNTRLR FAN SPEED 16-QSOP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
功能: 风扇控制,温度监控器
传感器类型: 内部和外部
感应温度: -40°C ~ 125°C,外部传感器
精确度: ±3.5°C 本地(最大),±3°C 远程(最大)
拓扑: ADC,PWM 发生器,转速计计数器
输出类型: PWM
输出警报:
输出风扇:
电源电压: 3 V ~ 5.5 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 16-SSOP(0.154",3.90mm 宽)
供应商设备封装: 16-QSOP
包装: 带卷 (TR)
Automatic PWM Fan-Speed Controllers with
Overtemperature Output
_______________________________________________________________________________________   9
MAX6644
1
2
3
4
TH1
TL2
TL1
FANFAIL
TACHSET
DXP2
GND
DXP1
V
DD
TH2
OT1
OT2
PWM_OUT
FAN_IN1
FAN_IN2
OT
5
6
7
8
16
15
4.7k?nbsp   4.7k?/DIV>
+V
FAN
 (5V OR 12V)
V
DD
(+3.0V TO +5.5V)
+V
FAN
 (5V OR 12V)
2.0?/DIV>
2.0?/DIV>
4.7k?/DIV>
TO FANFAIL
ALARM
0.1糉
0.1糉
14
13
CURRENT-SENSE
MODE
CURRENT-SENSE
MODE
TO OVERTEMPERATURE
ALARM
12
11
10
9
N
N
MAX6645
1
FANFAIL
TACHSET
DXP2
GND
DXP1
VDD
PWM_OUT
FAN_IN1
FAN_IN2
OT
2
3
4
5
4.7k?/DIV>
4.7k?/DIV>
+V
FAN
(5V OR 12V)
V
DD
(+3.0V TO +5.5V)
+V
FAN
(5V OR 12V)
4.7k?/DIV>
TO FANFAIL
ALARM
10
TACHOMETER MODE
TACHOMETER MODE
TO OVERTEMPERATURE
ALARM
9
8
7
6
N
Figure 3. MAX6644 Using Two External Transistors to Measure Remote Temperatures and Control Two 2-Wire Fans. The fans power-
supply current is monitored to detect failure of either fan. Connect pin 10 to pin 11 if only one fan is used.
Figure 4. MAX6645 Using Two External Transistors to Measure Remote Temperatures and Control Two 2-Wire Cooling Fans. The
fans power-supply current is monitored to detect failure of either fan. Connect FAN_IN1 to FAN_IN2 if only one fan is used.
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