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NCP1212/D Datasheet

  • NCP1212/D

  • Current Mode PWM Controller for Both Forward and Flyback Con...

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NCP1212
Current Mode PWM
Controller for Both Forward
and Flyback Converters
NCP1212 is a high performance current mode PWM controller
specifically designed for off鈭抣ine and dc鈭抰o鈭抎c converter applications.
The device requires very few external components and offers designer
additional protection for better system reliability. The device features
a trimmed oscillator for precise duty鈭抍ycle control, accurate bandgap
voltage reference, high gain error amplifier, current sensing
comparator and a high current totem pole output gate driver that
ideally drives the external power MOSFET. Additionally, the device
has built鈭抜n programmable Brownout Detect and Soft鈭扴tart features
to enhance system reliability. Also, the 48%/82% selectable maximum
turn on duty鈭抍ycle control and external programmable switching
frequency capabilities make this device an ideal controller for both
forward and flyback configurations. This device is available in both
PDIP鈭? and space saving SO鈭? packages.
Features
http://onsemi.com
MARKING
DIAGRAMS
8
SO鈭?
D SUFFIX
CASE 751
1
8
PDIP鈭?
P SUFFIX
CASE 626
8
1
1
NCP1212
AWL
YYWW
1
N1212
ALYW
8
鈥?/div>
Trimmed Oscillator Charge and Discharge Current for Precise
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Duty鈭扖ycle Control
Internal High Accuracy Bandgap Voltage Reference
Current Mode Operation up to 200 kHz
Inherent Feed Forward Compensation
Latching PWM for Cycle鈭抌y鈭扖ycle Current Limiting
High Current Totem Pole Output Gate Driver
Low Startup and Operating Current
Internal Undervoltage Lockout with Hysteresis
Internal Leading Edge Blanking for Current Feedback
Direct Interface with Optocoupler for Secondary Sensing
Built鈭抜n Soft鈭扴tart Function, Programmable by External Capacitor
User Programmable 48%/82% Maximum Duty鈭扖ycle Selection
Output Overvoltage Protection Against Open Loop
AC Line Brownout Detect Protection
Output Overload Protection Irrespective of Auxiliary Voltage Level
ATX PC Power Supply
Universal Input Wall Mount Adaptors
CRT Monitor
All Flyback and Forward SMPS Systems
A
WL, L
YY, Y
WW, W
= Assembly Location
= Wafer Lot
= Year
= Work Week
PIN CONNECTIONS
FB
BOK
CS
CT
1
2
3
4
(Top View)
8
7
6
5
SS/DMAX
VCC
DRV
GND
ORDERING INFORMATION
Device
NCP1212DR2
NCP1212P
Package
SO鈭?
PDIP鈭?
Shipping
2500 Tape & Reel
50 Units/Rail
Typical Applications
漏
Semiconductor Components Industries, LLC, 2003
1
August, 2003 鈭?Rev. 1
Publication Order Number:
NCP1212/D

NCP1212/D相關(guān)型號(hào)PDF文件下載

  • 型號(hào)
    版本
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  • 英文版
    Sub 1.0 V Precision Adjustable Shunt Regulator
    ONSEMI
  • 英文版
    Sub 1.0 V Precision Adjustable Shunt Regulator
    ONSEMI [ON...
  • 英文版
    Self-Supplied Monolithic Switcher for Low Standby-Power Offl...
    ON SEMICONDUCTOR
  • 英文版
    Integrated Off-Line Switching Regulator
    ONSEMI
  • 英文版
    Integrated Off-Line Switching Regulator
    ONSEMI [ON...
  • 英文版
    Integrated Off-Line Switching Regulator
    ONSEMI
  • 英文版
    Integrated Off-Line Switching Regulator
    ONSEMI [ON...
  • 英文版
    Integrated Off-Line Switching Regulator
    ONSEMI
  • 英文版
    Integrated Off-Line Switching Regulator
    ONSEMI [ON...
  • 英文版
    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
    ONSEMI
  • 英文版
    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
    ONSEMI [ON...
  • 英文版
    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
    ONSEMI
  • 英文版
    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
    ONSEMI [ON...
  • 英文版
    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
    ONSEMI
  • 英文版
    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
    ONSEMI [ON...
  • 英文版
    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
    ONSEMI
  • 英文版
    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
    ONSEMI [ON...
  • 英文版
    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
    ONSEMI
  • 英文版
    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
    ONSEMI [ON...
  • 英文版
    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
    ONSEMI [ON Semi...

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