在线询价：
品牌:Melexis 型号:U79 US79KUA 种类:霍尔 材料:聚合物 材料物理性质:半导体 制作工艺:集成 输出信号:数字型 *护等级:NA 线性度:NA（%F.S.） 迟滞:NA（%F.S.） 重复性:NA（%F.S.） 灵敏度:NA 漂移:NA 分辨率:NA
双磁*霍尔传感器U79 US79KUA
US79 Series
CMOS Power Hall IC
Features and Benefits
• Built-in Reverse Voltage Protection
• Built-in RFI Filter
• Power Efficient CMOS and Power MOSFET Drivers allow 400mA without
overheating
• Built-in Zener Diodes Protect Outputs
• Eliminate all Fan Components
• Eliminate PC Board
• 5V and 12V Operation
• High Sensitivity for switching symmetry
• Locked Rotor Shutdown
Applications
• Fan sizes up to 90mm
• Current range up to 400mA
Ordering Information
Part No. Temperature Suffix Package Code
US79 K (-40°C to 125°C) UA (TO-92 flat)
1. Functional Diagram
2. Description
The US79KUA is the most advanced Smart Fan
Control Hall IC. It is designed for 5V and 12V
cooling commutation. The chip contains many
features to allow survival in a harsh
environment. The IC was designed to eliminate
all discrete components such as capacitors,
resistors, transistors, diodes, PC board and
*ociated labor, replacing US$0.25 to US$0.35
in direct cost.
The K rating guarantees proper operation up to
an ambient temperature of 125°C. Hall IC
circuitry and power FET output provide a low
power dissipation cool chip.
Locked Rotor conditions are detected by the IC
when there is no motion for one second and will
shut off the motor drive for five seconds. Then,
the IC will turn on the drive current for one
second. This sequence continues indefinitely
until the locked rotor condition is fixed. This
feature prevents overheating.
友情链接： 深圳市元东发电子有限公司
