Datasheet Linear Technology LT3799 — Ficha de datos

Fabricante	Linear Technology
Serie	LT3799

Controlador LED Flyback aislado sin conexión con PFC activo

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PDF, 935 Kb, Revisión: B, Archivo subido: oct 4, 2017

Extracto del documento

Embalaje

	LT3799EMSE#PBF	LT3799EMSE#TRPBF	LT3799IMSE#PBF	LT3799IMSE#TRPBF
N	1	2	3	4
Package	MS-16E Dibujo del esquema del paquete	MS-16E Dibujo del esquema del paquete	MS-16E Dibujo del esquema del paquete	MS-16E Dibujo del esquema del paquete
Package Code	MSE	MSE	MSE	MSE
Package Index	05-08-1667	05-08-1667	05-08-1667	05-08-1667
Pin Count	16	16	16	16

Paramétricos

Parameters / Models	LT3799EMSE#PBF	LT3799EMSE#TRPBF	LT3799IMSE#PBF	LT3799IMSE#TRPBF
Architecture	Offline Isolated Flyback	Offline Isolated Flyback	Offline Isolated Flyback	Offline Isolated Flyback
Demo Boards	DC1595A,DC1744A,DC1775A	DC1595A,DC1744A,DC1775A	DC1595A,DC1744A,DC1775A	DC1595A,DC1744A,DC1775A
Design Tools	LTspice File	LTspice File	LTspice File	LTspice File
Dimming	Triac	Triac	Triac	Triac
Export Control	no	no	no	no
Features	No Opto Isolator, Active PFC,	No Opto Isolator, Active PFC,	No Opto Isolator, Active PFC,	No Opto Isolator, Active PFC,
Frequency, kHz	300	300	300	300
Isupply, mA	0.070	0.070	0.070	0.070
Max Number of LEDs	Offline 4W to 100W+ LED Application	Offline 4W to 100W+ LED Application	Offline 4W to 100W+ LED Application	Offline 4W to 100W+ LED Application
Monolithic	no	no	no	no
Number of Outputs	1	1	1	1
Operating Temperature Range, °C	0 to 85	0 to 85	-40 to 85	-40 to 85
Synchronous	no	no	no	no
Topology	Flyback, LED Driver	Flyback, LED Driver	Flyback, LED Driver	Flyback, LED Driver

Plan ecológico

	LT3799EMSE#PBF	LT3799EMSE#TRPBF	LT3799IMSE#PBF	LT3799IMSE#TRPBF
RoHS	Obediente	Obediente	Obediente	Obediente

Notas de Diseño

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Offline LED Lighting Simplified: High Power Factor, Isolated LED Driver Needs No Opto-Isolators and is TRIAC Dimmer Compatible &mdash DN490
PDF, 125 Kb, Archivo publicado: marzo 18, 2011
Extracto del documento
Offline LED Lighting Simplified: High Power Factor, Isolated
LED Driver Needs No Opto-Isolators and is TRIAC Dimmer
Compatible вЂ“ Design Note 490
Wei Gu
Introduction
As environmental concerns over traditional lighting increase and the price of LEDs decreases, high power LEDs
are fast becoming a popular lighting solution for ofп¬‚ine
applications. In order to meet the requirements of ofп¬‚ine
lightingвЂ”such as high power factor, high efп¬Ѓciency, isolation and TRIAC dimmer compatibilityвЂ”prior LED drivers
used many external discrete components, resulting in
cumbersome solutions. The LTВ®3799 solves complexity,
space and performance problems by integrating all the
required functions for ofп¬‚ine LED lighting. opto-coupler. Its unique bleeder circuit makes the LED
driver compatible with TRIAC dimmers without additional
components. Open-and shorted-LED protection ensures
long term reliability.
No-Opto Operation
Figure 1 shows a complete LED driver solution. The LT3799
senses the output current from the primary side switch
current waveform. For a п¬‚yback converter operating in
boundary mode, the equation for the output current is:
IOUT = 0.5 IPK N (1 вЂ“ D)
IPK is the peak switch current, N is the primary to secondary turns ratio and D is the duty cycle. The IC regulates The LT3799 controls an isolated п¬‚yback converter in …

Linea modelo

Serie: LT3799 (4)

LT3799EMSE#PBF LT3799EMSE#TRPBF LT3799IMSE#PBF LT3799IMSE#TRPBF

Clasificación del fabricante

Power Management > LED Driver ICs > Offline LED Drivers
Power Management > Power Control > Offline Controllers/PFC