- 您现在的位置：买卖IC网 > PDF目录19602 > MAX6660AEE+ (Maxim Integrated)IC REG FAN SPEED 16-QSOP PDF资料下载
参数资料
| 型号： | MAX6660AEE+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 5/21页 |
| 文件大小： | 0K |
| 描述： | IC REG FAN SPEED 16-QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 功能： | 风扇控制，温度监控器 |
| 传感器类型： | 外部 |
| 感应温度： | 外部传感器 |
| 精确度： | ±5°C（最小值） |
| 拓扑： | ADC，比较器，风扇控制，多路复用器，寄存器库 |
| 输出类型： | I²C?/SMBus? |
| 输出警报： | 是 |
| 输出风扇： | 是 |
| 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： | 管件 |
Remote-Junction Temperature-Controlled
Fan-Speed Regulator with SMBus Interface
Pin Description
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
NAME
VFAN
V CC
DXP
DXN
FAN
ADD1
PGND
AGND
OVERT
ADD0
ALERT
SMBDATA
GAIN
SMBCLK
STBY
TACH IN
FUNCTION
Fan Drive Power-Supply Input. 4.5V to 13.5V.
Supply Voltage Input. +3V to +5.5V. Bypass V CC to ground with a 0.1μF capacitor.
Input: Remote-Junction Anode. Place a 2200pF capacitor between DXP and DXN for noise filtering.
Input: Remote-Junction Cathode. DXN is internally biased to a diode voltage above ground.
Open-Drain Output to Fan Low Side. Connect a minimum 1μF capacitor between FAN and VFAN.
SMBus Address Select Pin. ADD0 and ADD1 are sampled upon power-up.
Power Ground
Analog Ground
Overtemperature Shutdown Output. Active-low output (programmable for active high if desired). Open drain.
SMBus Slave Address Select Pin. ADD0 and ADD1 are sampled upon power-up.
SMBus Alert (Interrupt) Output. Open-drain, active-low output.
SMBus Serial Data Input/Output. Open drain.
Gain Control. Connect an external resistor from GAIN to V CC to reduce the gain of the current-sense mode.
SMBus Clock Line from Controller. This line tolerates inputs up to V CC even if MAX6660 is not powered.
Hardware Standby Input. Drive STBY low to reduce supply current. Temperature and comparison
data are retained in standby mode.
Fan Tachometer Input. Tolerates voltages up to VFAN.
Detailed Description
The MAX6660 is a remote temperature sensor and fan
controller with an SMBus interface. The MAX6660 con-
verts the temperature of a remote-junction temperature
sensor to a 10-bit + sign digital word. The remote tem-
perature sensor can be a diode-connected transistor,
such as a 2N3906, or the type normally found on the
substrate of many processors’ ICs. The temperature
information is provided to the fan-speed regulator and
is read over the SMBus interface. The temperature
data, through the SMBus, can be read as a 10-bit +
sign two’s complement word with a 0.125°C resolution
(LSB) and is updated every 0.25s.
The MAX6660 incorporates a closed-loop fan controller
that regulates fan speed with tachometer feedback. The
temperature information is compared to a threshold and
range setting, which enables the MAX6660 to automati-
cally set fan speed proportional to temperature. Full con-
trol of these modes is available, including being able to
open either the thermal control loop or the fan control
loop. Figure 1 shows a simplified block diagram.
ADC
The ADC is an averaging type that integrates over a
60ms period with excellent noise rejection. A bias cur-
rent is steered through the remote diode, where the for-
ward voltage is measured, and the temperature is com-
puted. The DXN pin is the cathode of the remote diode
and is biased at 0.65V above ground by an internal
diode to set up the ADC inputs for a differential mea-
surement. The worst-case DXP-DXN differential input
voltage range is 0.25V to 0.95V. Excess resistance in
series with the remote diode causes about +1/2°C error
per ohm. Likewise, 200mV of offset voltage forced on
DXP-DXN causes approximately 1°C error.
A/D Conversion Sequence
A conversion sequence is initiated every 250ms in the
free-running autoconvert mode (bit 6 = 0 in the
Configuration register) or immediately by writing a One-
Shot command. The result of the new measurement is
available after the end of conversion. The results of the
previous conversion sequence are still available when
the ADC is converting.
Remote-Diode Selection
Temperature accuracy depends on having a good-
quality, diode-connected small-signal transistor.
Accuracy has been experimentally verified for all
devices listed in Table 1. The MAX6660 can also direct-
_______________________________________________________________________________________
5
相关PDF资料 |
PDF描述 |
|---|---|
| ESC40DRAS-S734 | CONN EDGECARD 80POS .100 R/A PCB |
| 178-025-613R691 | CONN DB25 MALE-MALE .750"SPACING |
| NME1212SC | CONV DC/DC 1W 12VIN 12V SIP SGL |
| 178-025-513R691 | CONN DB25 FEM-FEM .750" SPACING |
| HSC40DREN-S734 | CONN EDGECARD 80POS .100 EYELET |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6660AEE+ | 功能描述:板上安装温度传感器 Remote-Junction Fan-Speed Regulator RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| MAX6660AEE+T | 功能描述:板上安装温度传感器 Remote-Junction Fan-Speed Regulator RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| MAX6660AEE+-T | 制造商:Maxim Integrated Products 功能描述:TEMP SENSOR DGTL 2-WIRE 16QSOP - Tape and Reel |
| MAX6660AEE-T | 功能描述:板上安装温度传感器 RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| MAX6660EVKIT | 功能描述:板上安装温度传感器 RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
发布紧急采购，3分钟左右您将得到回复。