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NCP1271: PWM Controller, Soft-Skip™ Standby, with Adjustable Skip Level and External Latch

Datasheet: PWM Controller, Soft-Skip™ Standby, with Adjustable Skip Level and External Latch
Rev. 6 (233.0kB)
Product Overview
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» Product Change Notification
The NCP1271 represents a new, pin to pin compatible, generation of the successful 7 pin current mode NCP12XX product series. The controller allows for excellent stand by power consumption by use of its adjustable Soft Skip mode and integrated high voltage startup FET. This proprietary Soft Skip also dramatically reduces the risk of acoustic noise. This allows the use of inexpensive transformers and capacitors in the clamping network. Internal frequency jittering, ramp compensation, timer based fault detection and a latch input make this controller an excellent candidate for converters where ruggedness and component cost are the key constraints.
Features   Benefits
     
  • Short Circuit Protection Independent of the Auxiliary Winding
 
  • Efficient protective circuitry
  • Adjustable Soft Skip Mode
 
  • Provides improved efficiency at light loads and reduces the acoustic noise
  • Internal High-Voltage Start-up
 
  • Clean and loss less start-up sequence and reduces component count
  • 5% Current Limit Accuracy over the Full Temperature Range
   
  • Internal Latch for Easy Implementation of Overvoltage and Overtemperature Protection
   
  • Frequency Jittering for Softened EMI Signature
   
  • +500 mA/800 mA Peak Current Drive Capability
   
Applications   End Products
  • ACDC Adapters
  • Consumer Electronic Power Supplies
 
  • Offline Battery Chargers
  • STB, DVD, DVDR
  • Notebooks
  • LCD Monitors
  • Printers
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
NCP1271D100R2G Active, Not Rec 
Pb-free
Halide free
NCP1271 SOIC-7 751U 1 260 Tape and Reel 2500 $0.3333
NCP1271D65R2G Active, Not Rec 
Pb-free
Halide free
NCP1271 SOIC-7 751U 1 260 Tape and Reel 2500 $0.3333
NCP1271P100G Obsolete
Pb-free
Halide free
NCP1271 PDIP-8 626B NA Tube 50  
NCP1271P65G Obsolete
Pb-free
Halide free
NCP1271 PDIP-8 626B NA Tube 50  
Market Leadtime (weeks) : 4 to 8
PandS   (2020-09-14 00:00) : <1K
Market Leadtime (weeks) : 8 to 12
PandS   (2020-09-14 00:00) : >1K
Market Leadtime (weeks) : Contact Factory
PandS   (2020-09-14 00:00) : <1K
Market Leadtime (weeks) : Contact Factory
PandS   (2020-09-14 00:00) : <100
Case Outlines
626B    751U   
Packages
NCP1271: PWM Controller, Soft-Skip™ Standby, with Adjustable Skip Level and External Latch
NCP1271: PWM Controller, Soft-Skip™ Standby, with Adjustable Skip Level and External Latch
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