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LT1248CN#PBF - 

PFC Controller IC, 11.5 V to 25 V & 8.5 mA Supply, 11.5 V Lockout, 96 % Duty Cycle, 300 kHz, DIP-16

LT1248CN#PBF - PFC Controller IC, 11.5 V to 25 V & 8.5 mA Supply, 11.5 V Lockout, 96 % Duty Cycle, 300 kHz, DIP-16

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Manufacturer Part No:
LT1248CN#PBF
Order Code:
2238178
Technical Datasheet:
LT1248CN#PBF   Datasheet
See all Technical Docs

Product Overview

The LT1248CN#PBF is a Power Factor Controller provides active power factor correction for universal off-line power systems. By using fixed high frequency PWM current averaging, without the need for slope compensation, it achieves far lower line current distortion with a smaller magnetic element than systems that use either peak-current detection or zero current switching approaches in both continuous and discontinuous modes of operation. It uses a multiplier containing a square gain function from the voltage amplifier to reduce the AC gain at light output load and thus maintains low line current distortion and high system stability. It also provides filtering capability to reject line switching noise which can cause instability when fed into the multiplier. Line current dead zone is minimized with low bias voltage at the current input to the multiplier. It provides many protection features including peak current limiting and overvoltage protection.
  • High power factor over wide load range with line current averaging
  • International operation without switches
  • Instantaneous overvoltage protection
  • Minimal line current dead zone
  • 250µA Typical start-up supply current
  • Rejects line switching noise
  • Synchronization capability
  • 9mA Low quiescent current

Applications

Power Management

Product Information

:
16.5V
:
11.5V
:
25V
:
250µA
:
8.5mA
:
DIP
:
16Pins
:
96%
:
300kHz
:
0°C
:
100°C
:
-
:
-
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