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MAX31760AEE+

更新时间： 2024-11-05 21:18:15
品牌 Logo 应用领域
美信 - MAXIM 光电二极管
页数 文件大小 规格书
37页 887K
描述
Analog Circuit, 1 Func, PDSO16, ROHS COMPLIANT, QSOP-16

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MAX31760AEE+ 技术参数

是否Rohs认证： 符合生命周期：Active
包装说明：SSOP,Reach Compliance Code：compliant
HTS代码：8542.39.00.01Factory Lead Time：6 weeks
风险等级：2.12模拟集成电路 - 其他类型：ANALOG CIRCUIT
JESD-30 代码：R-PDSO-G16长度：4.9 mm
功能数量：1端子数量：16
最高工作温度：125 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：SSOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）：NOT SPECIFIED座面最大高度：1.75 mm
最大供电电压 (Vsup)：3.6 V最小供电电压 (Vsup)：3 V
标称供电电压 (Vsup)：3.3 V表面贴装：YES
温度等级：AUTOMOTIVE端子形式：GULL WING
端子节距：0.635 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：3.89 mm
Base Number Matches：1

MAX31760AEE+ 数据手册

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MAX31760  
Precision Fan-Speed Controller  
with Nonvolatile Lookup Table  
General Description  
Features  
The MAX31760 integrates temperature sensing along  
with precision PWM fan control. It accurately measures  
its local die temperature and the remote temperature of  
a discrete diode-connected transistor, such as a 2N3906,  
or a thermal diode commonly found on CPUs, graphics  
processor units (GPUs), and other ASICs. Multiple tem-  
perature thresholds, such as local high/overtemperature  
(OT) and remote high/overtemperature, can be set by an  
● Operating Settings Stored in Nonvolatile Memory for  
Automatic Operation at Power-On  
● 48-Step Nonvolatile LUT Maps Temperature to PWM  
Duty Cycle  
● Smooth PWM Duty-Cycle Transitions Minimize  
Audibility of Fan Noise  
● Two Tachometer Inputs for Measuring the RPM of  
Two Fans Independently  
2
I C-compatible interface.  
● FF/FS Pin Multiplexes Fan-Failure Output with Full-  
Fan speed is controlled based on the temperature reading  
as an index to a 48-byte lookup table (LUT) containing  
user-programmed PWM values. The flexible LUT-based  
architecture enables the user to program a smooth  
nonlinear fan speed vs. temperature transfer function to  
minimize acoustic fan noise. Two tachometer inputs allow  
measuring the speeds of two fans independently. The  
FF/FS pin multiplexes an open-drain fan-failure output  
with a full-speed fan-drive input. When the local or remote  
OT threshold is exceeded, the SHDN pin is asserted low  
and can be used to shut down the system. A dedicated  
ALERT pin reports that either a local or remote high-  
temperature threshold has been exceeded. ALERT can  
be programmed to work in either fault indicator mode or  
interrupt mode. These features make the device a com-  
pact and complete solution for a single-fan or two-fan  
cooling system.  
Speed Fan-Drive Input  
● Accurately Senses Remote and Local Temperature  
● Programmable Thermal Diode Ideality Factor  
Minimizes Ideality Factor Mismatch  
● Automatic Series Resistance Cancellation  
● Dedicated ALERT Pin for Temperature Faults  
● SHDN Pin Available for System Overtemperature  
Shutdown  
● 3.0V to 3.6V Operating Voltage Range  
● -40NC to +125NC Operating Temperature Range  
Applications  
● Servers  
● Networking Equipment  
● STB/DVR  
● NAS/DAS  
Ordering Information appears at end of data sheet.  
Typical Application Circuit  
+3.3V  
FAN VOLTAGE  
+5V OR +12V  
V
4-WIRE FAN #1  
CC  
V
DD  
ALERT  
FF/FS  
SHDN  
TACH1  
TACH2  
TACH  
PWM  
GND  
MAX31760  
SDA  
SCL  
PWM  
TO SYSTEM HOST  
FAN VOLTAGE  
+5V OR +12V  
DXP  
V
CC  
4-WIRE FAN #2  
2200pF  
TACH  
PWM  
DXN  
REMODE  
A0 A1 A2 GND  
DIODE CONNECTED  
TRANSISTOR  
GND  
(e.g., CPU, GPU, OR ASIC)  
For related parts and recommended products to use with this part, refer to www.maximintegrated.com/MAX31760.related.  
19-7395; Rev 0; 4/14  
1234567...37

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