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LM3447MTX Power Path Management IC PFC Prim Side Pwr Reg PFC FB Controller

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ChongMing Group (HK) Int'l Co., Ltd

City: shenzhen

Country/Region:china

Tel:86-755-88367702

Contact Person:
Ms.Doris Guo
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LM3447MTX Power Path Management IC PFC Prim Side Pwr Reg PFC FB Controller

Brand Name Ti
Model Number LM3447MTX
Minimum Order Quantity Contact us
Price Contact us
Payment Terms Paypal, Western Union, TT
Supply Ability 50000 Pieces per Day
Delivery Time The goods will be shipped within 3 days once received fund
Packaging Details TSSOP14
Description LED Driver IC 1 Output AC DC Offline Switcher Flyback Triac Dimming 14-TSSOP
Packaging Cut Tape
Package / Case TSSOP-14
Mounting Style SMD/SMT
Maximum Operating Temperature + 125 C
Minimum Operating Temperature - 40 C
Product Category Power Factor Correction - PFC
Detailed Product Description

 

LM3447MTX Power Path Management IC PFC Prim Side Pwr Reg PFC FB Controller

 

FEATURES

  • Integrated Phase Angle Decode

    • – Leading and Trailing Edge Compatible

    • – Over 50:1 Dimming Range

  • Power Factor Correction with Low Total Harmonic Distortion

  • Primary Side Control Using Input Voltage Feedforward Technique

  • Input Power Regulation Scheme with Improved Line Regulation

  • Constant Power Operation of LEDs to Compensate for Forward Voltage Variations Over Temperature and Lifetime

  • Fixed Frequency Discontinuous Conduction Mode Operation

  • Valley Switching Operation to Achieve High Efficiency and Low EMI

  • Efficient TRIAC Hold Current Management

  • Thermal Foldback Function for LED Protection

  • LED Open Circuit and Short Circuit Protection

    APPLICATIONS

  • Dimmable A19, R20, PAR30/38 LED Lamps

  • Recessed LED Downlights and Pendant Lights

  • Industrial and Commercial Solid State Lighting

    TYPICAL APPLICATION DIAGRAM

 

DESCRIPTION

The LM3447 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. The device 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. Additional features include LED open circuit and short circuit protection, cycle-by-cycle FET over-current protection, burst mode fault operation using an internal 812ms fault timer and internal thermal shutdown.

The LM3447 is ideal for implementing dimmable, isolated single stage LED lamp drivers where simplicity, low-component count and small solution size are of primary importance. This device is currently available in a TSSOP 14-pin package.

Product Tags: microchip battery management   power management integrated circuit  
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