LM3448 datasheet(10/43 Pages) TI1

部品番号	LM3448

部品情報	Phase Dimmable Offline LED Driver with Integrated FET

Download	43 Pages

Scroll/Zoom	100%

メーカー	TI1 [Texas Instruments]

ホームページ	http://www.ti.com

Logo

10 / 43 page

delay

VAC

V+

t

,

(a)

(b)

t

VAC

V

+

t

(a)

(B)

t

LM3448

SNOSB51B – SEPTEMBER 2011 – REVISED NOVEMBER 2011

www.ti.com

Figure 17. Voltage Waveforms After Bridge Rectifier Without TRIAC Dimming

Figure 18(b) and Figure 18(a) show typical TRIAC dimmed voltage waveforms before and after the bridge

rectifier.

Figure 18. Voltage Waveforms After Bridge Rectifier With TRIAC Dimming

SENSING THE RECTIFIED TRIAC WAVEFORM

An external series pass regulator (R2, D1, and Q1) translates the rectified line voltage to a level where it can be

sensed by the BLDR pin on the LM3448 as shown in Figure 19.

10

Submit Documentation Feedback

Product Folder Links: LM3448

同様の部品番号 - LM3448

メーカー	部品番号	データシート	部品情報
National Semiconductor ...	LM3444	3Mb / 14P	120VAC, 8W Isolated Flyback LED Driver Industrial and Commercial Lighting
Texas Instruments	LM3444	923Kb / 30P	[Old version datasheet] AC-DC Offline LED Driver
	LM3444	965Kb / 27P	[Old version datasheet] AC-DC Offline LED Driver
	LM3444	362Kb / 27P	[Old version datasheet] AC-DC Offline LED Driver
National Semiconductor ...	LM3444-230VAC	2Mb / 18P	8W Isolated Flyback LED Driver Industrial and Commercial Lighting

メーカー	部品番号	データシート	部品情報
Texas Instruments	LM3445MM	1Mb / 39P	[Old version datasheet] Triac Dimmable Offline LED Driver
National Semiconductor ...	LM3445	1Mb / 26P	Triac Dimmable Offline LED Driver
Diodes Incorporated	AL5892	657Kb / 11P	OFFLINE DIMMABLE LINEAR LED DRIVER Rev. 1 - 2 October 2019
Global Mixed-mode Techn...	G5345	58Kb / 1P	Triac Dimmable Offline LED Driver
Texas Instruments	LM3445	1Mb / 42P	[Old version datasheet] TRIAC Dimmable Offline LED Driver
Texas Instruments	LM3445	1Mb / 37P	[Old version datasheet] Triac Dimmable Offline LED Driver
National Semiconductor ...	LM3445	1Mb / 26P	Triac Dimmable Offline LED Driver
Diodes Incorporated	AL1696	395Kb / 14P	HIGHLY INTEGRATION OFFLINE DIMMABLE LED DRIVER
	AL1697	559Kb / 13P	High PF, Offline Dimmable LED Driver with Internal High-Voltage MOSFET
	AP1694A	474Kb / 15P	OFFLINE, HIGH PF, HIGH EFFICIENCY DIMMABLE LED DRIVER CONTROLLER