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LINEAR TECHNOLOGY  LT1249CS8#PBF  PFC Controller IC, 11.5 V to 25 V & 9 mA Supply, 11.5 V Lockout, 96 % Duty Cycle, 125 kHz, SOIC-8

LINEAR TECHNOLOGY LT1249CS8#PBF
Manufacturer Part No:
LT1249CS8#PBF
Order Code:
1273703
Technical Datasheet:
See all Technical Docs

Image is for illustrative purposes only. Please refer to product description.

Product Overview

The LT1249CS8#PBF is a Power Factor Controller provides active power factor correction for universal offline power systems with very few external parts. By using fixed high frequency PWM current averaging without the need for slope compensation, the LT1249 achieves far lower line current distortion, with a smaller magnetic element than systems that use either peak current detection or zero current switching approach, 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.
  • High power factor over wide load range with line current averaging
  • International operation without switches
  • Instantaneous overvoltage protection
  • Minimal line current dead zone
  • Rejects line switching noise
  • Synchronization capability

Product Information

UVLO:
-
Supply Voltage Min:
11.5V
Supply Voltage Max:
25V
Startup Current:
250µA
Operating Supply Current:
9mA
Controller IC Case Style:
SOIC
No. of Pins:
8Pins
Duty Cycle (%):
96%
Frequency:
125kHz
Operating Temperature Min:
0°C
Operating Temperature Max:
100°C
Packaging:
Cut Tape
Product Range:
-
MSL:
-
SVHC:
No SVHC (17-Dec-2015)

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Applications

  • Power Management

Legislation and Environmental

Country of Origin:
United States

Country in which last significant manufacturing process was carried out

RoHS Compliant:
Yes
Tariff No:
85423190
Weight (kg):
.000175

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