LM3447MTX/NOPB Texas Instruments - Yeehing Electronics

Phase dimmable, primary side power Regulated, PFC Flyback controller for LED Lighting

Pricing (USD)

Quantity	Unit Price
1 — 99	1.01
100 — 249	0.834
250 — 999	0.599
1,000 +	0.26

The above prices are for reference only.

Specifications

Manufacturer	Texas Instruments
Product Category	Power Factor Correction - PFC
RoHS	Y
Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 125 C
Mounting Style	SMD/SMT
Package / Case	TSSOP-14
Packaging	Reel
Features	Adjustable Switch Frequency, Soft Switching, Thermal Shutdown
Operating Temperature Range	- 40 C to + 125 C
Series	LM3447
Brand	Texas Instruments
Product Type	PFC - Power Factor Correction
Factory Pack Quantity	2500
Subcategory	PMIC - Power Management ICs
Unit Weight	0.004949 oz

For more information, please refer to datasheet

Documents

LM3447MTX/NOPB Datasheet

More Information

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.