開關型升壓結構穩壓IC HY5171

HY5171 is a 280kHz switching regulators with a high efficiency, 1.5A integrated switch. These  parts  operate  over  a  wide  input voltage  range,  from  2.7V  to  30V.  The flexibility  of  the  design  allows  the  chips  to operate in most power supply configurations, including  boost,  flyback,  inverting,  and SEPIC.  HY5171  utilize  current  mode architecture, which allows excellent load and line regulation, as well as a practical means for  limiting  current.  The  circuit  design includes  provisions  for  features  such  as frequency  synchronization,  shutdown,  and feedback  controls  for  either  positive  or negative voltage regulation.

Features

Integrated Power Switch 1.5A.

2.7V to 30V input Range.

Minimum External Components..

External Synchronization.

Built in Over Current Protection.

Thermal Shutdown with Hysteresis.

Regulates Positive or Negative output voltage.

Standby Current is less than 50uA.

Applications

Step-Up Regulators.

CCFL backlighting driver.

Laptop Computer Supplies.

Multi-Output Flyback Supplies

Inverting Supplies.

TFT LCD Bias Supplies.

 

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