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All Products > Semiconductors > Power Management ICs > Power Factor Correction - PFC

Texas Instruments LM3447 PFC Flyback Controller and Evaluation Module

Texas Instruments LM3447 PFC Flyback Controller for LED lighting is a versatile power factor correction (PFC) controller designed to meet the performance requirements of residential and commercial phase-cut dimmer compatible LED lamp drivers. TI LM3447 incorporates a phase decoder circuit and an adjustable hold current circuit to provide smooth, flicker free dimming operation. A proprietary primary side control technique based on input voltage feedforward is used to regulate the input power drawn by the LED driver and to achieve line regulation over a wide range of input voltage. Valley switching operation is implemented to minimize switching loss and reduce EMI. An internal thermal foldback circuit is provided to protects the LEDs from damage based on the temperature sensed by a single external NTC resistor. LM3447 PFC controller is ideal for implementing dimmable, isolated single stage LED lamp drivers where simplicity, low-component count and small solution size are of primary importance. TI LM3447-A19-120VEVM evaluation module helps designers evaluate the performance of LM3447 PFC Flyback Controller. This EVM is a primary-side power regulated PFC controller used for commercial and residential phase-cut dimmer compatible LED lamp drivers. It uses fixed frequency valley switching operation, resulting in discontinuous current operation.
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Category   Semiconductors >  Power Management ICs >  Power Factor Correction - PFC

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Texas Instruments LM3447MTE/NOPB
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926-LM3447MTE/NOPB


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Texas Instruments Power Factor Correction - PFC Prim Side Pwr Reg PFC FB Controller
Data Sheet 194
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TSSOP-14 Reel
Texas Instruments LM3447MT/NOPB
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Texas Instruments Power Factor Correction - PFC Prim Side Pwr Reg PFC FB Controller
Data Sheet Non-Stocked Lead-Time 6 Weeks
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170: $1.62
250: $1.44
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1,000: $0.878



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645 mW + 125 C SMD/SMT TSSOP-14 Tube
Texas Instruments LM3447MTX/NOPB
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Texas Instruments Power Factor Correction - PFC Prim Side Pwr Reg PFC FB Controller
Data Sheet Non-Stocked Lead-Time 6 Weeks
Alternative Packaging
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