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NCP1252: PWM Controller, Current Mode, for Forward and Flyback Applications

Datasheet: Current Mode PWM Controller for Forward and Flyback Applications
Rev. 8 (243kB)
Product Overview
»View Reliability Data
»View Material Composition
» Product Change Notification
The NCP1252 controller offers everything needed to build cost effective and reliable ac-dc switching supplies dedicated to ATX power supplies or any forward application. Thanks to the use of an internally fixed timer, NCP1252 detects an output overload without relying on the auxiliary Vcc. A Brown-Out input offers protection against low input voltages and improves the converter safety. Finally, the SOIC-8 package saves PCB space and represents a solution of choice in cost sensitive project.
Features   Benefits
     
  • Peak current mode control
 
  • Help to build rugged power supplies
  • Adjustable switching frequency
 
  • High flexibility on the switching frequency
  • Latched primary overcurrent protection with 10 ms fixed delay
 
  • Allow temporary over load/current and latch permanent fault
  • Adjustable soft start timer
 
  • Flexibility on the soft start duration
  • Auto recovery brown out detection
 
  • Resume the power supply operation after a brown out detection
  • Internal 160 ns leading edge blanking
 
  • Noise immunity improved
  • Frequency jittering
 
  • Improve the EMI signature by spreading the noise
  • Adjustable internal ramp compensation
 
  • Save external components
  • +500 mA / -800 mA Source/Sink current driver capability
 
  • No need of external power MOSFET driver
  • Skip cycle operation in light/no load operation
 
  • Save dummy load
  • SOIC-8 package
 
  • Save PCB area
  • Extended Vcc range up to 28 V with auto recovery UVLO
   
Applications   End Products
  • Power supplies for PC silver boxes
  • Ac-dc adapter converter
  • Game Adapter
  • Flyback and Forward Application
 
  • Desktops
Availability & Samples
Specifications
Case Outlines
Application Diagram
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
NCP1252ADR2G Active
Pb-free
Halide free
NCP1252 SOIC-8 751-07 1 260 Tape and Reel 2500 $0.3067
NCP1252APG Obsolete
Pb-free
Halide free
NCP1252 PDIP-8 626-05 NA Tube 50  
NCP1252BDR2G Active
Pb-free
Halide free
NCP1252 SOIC-8 751-07 1 260 Tape and Reel 2500 $0.3067
NCP1252CDR2G Active
Pb-free
Halide free
NCP1252 SOIC-8 751-07 1 260 Tape and Reel 2500 $0.3067
NCP1252DDR2G Active
Pb-free
Halide free
NCP1252 SOIC-8 751-07 1 260 Tape and Reel 2500 $0.3067
NCP1252EDR2G Active
Pb-free
Halide free
NCP1252 SOIC-8 751-07 1 260 Tape and Reel 2500 $0.32
Market Leadtime (weeks) : Contact Factory
PandS   (2020-09-14 00:00) : >1K
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : 13 to 16
PandS   (2020-09-14 00:00) : >1K
Market Leadtime (weeks) : 8 to 12
Avnet   (2020-08-19 00:00) : >1K
Market Leadtime (weeks) : 4 to 8
Market Leadtime (weeks) : Contact Factory

Product
Description
Pricing ($/Unit)
Compliance
Status
Topology
Control Mode
fsw Typ (kHz)
Stand-by Mode
UVLO (V)
Short Circuit Protection
Latch
Soft Start
VCC Max (V)
Drive Cap. (mA)
Package Type
NCP1252ADR2G  
 $0.3067 
Pb
H
 Active   
Flyback
Forward
Current Mode
Up to 500
Yes
9 to 10
Yes
Yes
Yes
28
500 / 800
SOIC-8
NCP1252BDR2G  
 $0.3067 
Pb
H
 Active   
Flyback
Forward
Current Mode
Up to 500
Yes
9 to 10
Yes
Yes
Yes
28
500 / 800
SOIC-8
NCP1252CDR2G  
 $0.3067 
Pb
H
 Active   
Flyback
Forward
Current Mode
Up to 500
Yes
9 to 10
Yes
Yes
Yes
28
500 / 800
SOIC-8
NCP1252DDR2G  
 $0.3067 
Pb
H
 Active   
Flyback
Forward
Current Mode
Up to 500
Yes
9 to 10
Yes
Yes
Yes
28
500 / 800
SOIC-8
NCP1252EDR2G  
 $0.32 
Pb
H
 Active   
Flyback
Forward
Current Mode
Up to 500
Yes
9 to 10
Yes
Yes
Yes
28
500 / 800
SOIC-8
Case Outlines
751-07    626-05   
Packages
NCP1252: PWM Controller, Current Mode, for Forward and Flyback Applications
NCP1252: PWM Controller, Current Mode, for Forward and Flyback Applications
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