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US661

Features: ·Soft Switching for low noise applications ·Slope control setting by dedicated pin ·One-chip solution (Hall + Drivers) ·Advanced Protection (enhanced locked rotor, reverse voltage, thermal, output clamping)·Integrated tachometer (US651) oralarm (US661) signal outputApplication· 5V/12V D...

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SeekIC No. : 004538699 Detail

US661: Features: ·Soft Switching for low noise applications ·Slope control setting by dedicated pin ·One-chip solution (Hall + Drivers) ·Advanced Protection (enhanced locked rotor, reverse voltage, therma...

US661 Data Sheet

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Part Number:
US661
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/4/27

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Product Details

Description



Features:

·Soft Switching for low noise applications 
·Slope control setting by dedicated pin 
·One-chip solution (Hall + Drivers) 
·Advanced Protection (enhanced locked rotor,
   reverse voltage, thermal, output clamping) 
·Integrated tachometer (US651) or 
   alarm (US661) signal output 
 


Application

· 5V/12V DC brushless motors 
· Continuous output current up to 350mA 
· Low noise brushless cooling fans 
· PC, server, laptop cooling fan 
· Power supply cooling fan 
· Large and small fan size


Specifications

Parameter Symbol Value Units
SupplyVoltage VDD -12to18 V
FG/RD voltage V FG(VRD) -7to18 V
Voltage on pinSLOPE VSLOPE -0.5to18 V
Pea output current IOUTp 700 mA
Continuous output current IOUTc 350 mA
Operating Temperature Range TA -40to85
Junction temperature TJ 125
Storage Temperature Range TS -55to150
Magnetic flux density B Unlimited mT

Table 1: Absolute maximum ratings  
Exceeding the absolute maximum ratings may cause permanent damage. 
Exposure to absolute-maximumrated conditions for extended periods may
affect device reliability.



Description

The US661 is a one-chip solution for driving
two-coil brushless DC fan and motors. It is
especially suitable for relatively high-current rated
operation as US661 can drive up to 350mA continuous
output current.
 
The use of Melexis Soft Switching concept lowers the acoustic and electrical motor noise and provides smoother ration. This efficient solution of US661 is combined with an innovative slope control design controllable via a dedicated pin.
 
The US661 includes reverse voltage protection, locked rotor protection and thermal protection. Therefore, the IC stness perfectly suits for consumer and automotive-on-board applications.
 
Tachometer (FG) or Alarm (RD) open-drain output of US661 is available. It makes the connectivity with external interface such as hardware monitoring or Super I/O IC easier.
 
The US661 is delivered in RoHS compliant DC package (SMD) for automatic soldering




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