参数资料
型号: MAX6639YAEE+T
厂商: Maxim Integrated
文件页数: 5/22页
文件大小: 0K
描述: IC TEMP MONITOR 2CH 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: 0°C ~ 150°C,外部传感器
拓扑: ADC,PWM 发生器,转速计计数器
输出类型: I²C?/SMBus?
输出警报:
输出风扇:
电源电压: 3 V ~ 3.6 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)
MAX6639/MAX6639F
2-Channel Temperature Monitor with Dual,
Automatic, PWM Fan-Speed Controller
Typical Operating Characteristics (continued)
(V CC = 3.3V, T A = +25°C.)
35
34
33
32
31
30
PWMOUT FREQUENCY
vs. DIE TEMPERATURE
35
34
33
32
31
30
PWMOUT FREQUENCY
vs. SUPPLY VOLTAGE
-40
-15
10
35
60
85
110
3.0
3.5
4.0
4.5
5.0
5.5
TEMPERATURE ( ° C)
SUPPLY VOLTAGE (V)
Pin Description
PIN
TQFN-EP
1, 15
2, 16
QSOP
3, 1
4, 2
NAME
PWM2,
PWM1
TACH2,
TACH1
FUNCTION
Open-Drain Output to Power-Transistor Driving Fan. Connect to the gate of a MOSFET or base of a
bipolar transistor. PWM_ requires a pullup resistor. The pullup resistor can be connected to a
supply voltage as high as 13.5V, regardless of the MAX6639’s supply voltage.
Tachometer Inputs. Connect to the tachometer output of the fan. TACH_ requires a pullup resistor.
The pullup resistor can be connected to a supply voltage as high as 13.5V, regardless of the
MAX6639’s supply voltage.
3
5
FANFAIL Active-Low, Open-Drain, Fan-Failure Output. Open circuit when V CC = 0.
4
5
6
7
8, 10
9
11
12
13
14
6
7
8
10
9, 12
11
13
14
16
15
THERM
OT
V CC
GND
DXP1,
DXP2
DXN
ADD
ALERT
SCL
SDA
Active-Low, Open-Drain Thermal Alarm Output. Typically used for clock throttling. Open circuit
when V CC = 0.
Active-Low, Open-Drain Overtemperature Output. Typically used for system shutdown or clock
throttling. Can be pulled up to 5.5V regardless of V CC . Open circuit when V CC = 0.
Power-Supply Input. 3.3V nominal. Bypass V CC to GND with a 0.1μF capacitor.
Ground. Connect to a clean ground reference.
Combined Current Source and A/D Positive Input for Remote Diode. Connect to anode of remote-
diode-connected temperature-sensing transistor. Do not leave unconnected; connect to DXN if no
remote diode is used. Place a 2200pF capacitor between DXP_ and DXN for noise filtering.
Remote Diode Current Sink Input. Connect Cathode of the Remote-Diode-Connected Transistor to DXN
Address Input. Sets device slave address. Connect to GND, V CC , or leave unconnected to give
three unique addresses. See Table 1.
Active-Low, Open-Drain SMBus Alert Output
SMBus Serial-Clock Input. Can be pulled up to 5.5V regardless of V CC . Open circuit when V CC =
SMBus Serial-Data Input/Output, Open Drain. Can be pulled up to 5.5V regardless of V CC . Open
circuit when V CC = 0.
Exposed Pad (TQFN package only). Internally connected to GND. Connect EP to a large PCB pad
EP
for optimum performance and enhanced thermal dissipation. Not intended as an electrical
connection point.
Maxim Integrated
5
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