Datasheet Linear Technology LT3492

Manufacturer	Linear Technology
Series	LT3492

Triple Output LED Driver with 3000:1 PWM Dimming

Datasheets

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PDF, 338 Kb, Language: en, File uploaded: Oct 4, 2017, Pages: 22
Triple Output LED Driver with 3000:1 PWM Dimming

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Packaging

	LT3492EFE#PBF	LT3492EFE#TRPBF	LT3492EUFD#PBF	LT3492EUFD#TRPBF	LT3492IFE#PBF	LT3492IFE#TRPBF	LT3492IUFD#PBF	LT3492IUFD#TRPBF
N	1	2	3	4	5	6	7	8
Package	TSSOP-28 Package Outline Drawing	TSSOP-28 Package Outline Drawing	4x5 QFN-28 Package Outline Drawing	4x5 QFN-28 Package Outline Drawing	TSSOP-28 Package Outline Drawing	TSSOP-28 Package Outline Drawing	4x5 QFN-28 Package Outline Drawing	4x5 QFN-28 Package Outline Drawing
Package Code	FE	FE	UFD	UFD	FE	FE	UFD	UFD
Package Index	05-08-1663 (EB)	05-08-1663 (EB)	05-08-1712	05-08-1712	05-08-1663 (EB)	05-08-1663 (EB)	05-08-1712	05-08-1712
Pin Count	28	28	28	28	28	28	28	28

Parametrics

Parameters / Models	LT3492EFE#PBF	LT3492EFE#TRPBF	LT3492EUFD#PBF	LT3492EUFD#TRPBF	LT3492IFE#PBF	LT3492IFE#TRPBF	LT3492IUFD#PBF	LT3492IUFD#TRPBF
Architecture	Improved Average Output Current Control	Improved Average Output Current Control	Improved Average Output Current Control	Improved Average Output Current Control	Improved Average Output Current Control	Improved Average Output Current Control	Improved Average Output Current Control	Improved Average Output Current Control
Demo Boards	DC1405A	DC1405A	DC1405A	DC1405A	DC1405A	DC1405A	DC1405A	DC1405A
Design Tools	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File
Dimming	3000:1 PWM, 10:1 Analog	3000:1 PWM, 10:1 Analog	3000:1 PWM, 10:1 Analog	3000:1 PWM, 10:1 Analog	3000:1 PWM, 10:1 Analog	3000:1 PWM, 10:1 Analog	3000:1 PWM, 10:1 Analog	3000:1 PWM, 10:1 Analog
Export Control	no	no	no	no	no	no	no	no
Features	True Color PWM Dimming, Open LED Protection	True Color PWM Dimming, Open LED Protection	True Color PWM Dimming, Open LED Protection	True Color PWM Dimming, Open LED Protection	True Color PWM Dimming, Open LED Protection	True Color PWM Dimming, Open LED Protection	True Color PWM Dimming, Open LED Protection	True Color PWM Dimming, Open LED Protection
Frequency, kHz	2100	2100	2100	2100	2100	2100	2100	2100
Ishutdown, µA	.1	.1	.1	.1	.1	.1	.1	.1
Isupply, mA	6	6	6	6	6	6	6	6
Max Number of LEDs	3 x 10	3 x 10	3 x 10	3 x 10	3 x 10	3 x 10	3 x 10	3 x 10
Monolithic	yes	yes	yes	yes	yes	yes	yes	yes
Number of Outputs	3	3	3	3	3	3	3	3
Operating Temperature Range, °C	0 to 85	0 to 85	0 to 85	0 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85
Output Current, A	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3
Switch Current, A	1	1	1	1	1	1	1	1
Synchronous	no	no	no	no	no	no	no	no
Topology	Buck, Boost, Buck-Boost, LED Driver	Buck, Boost, Buck-Boost, LED Driver	Buck, Boost, Buck-Boost, LED Driver	Buck, Boost, Buck-Boost, LED Driver	Buck, Boost, Buck-Boost, LED Driver	Buck, Boost, Buck-Boost, LED Driver	Buck, Boost, Buck-Boost, LED Driver	Buck, Boost, Buck-Boost, LED Driver
Vin Max, V	30	30	30	30	30	30	30	30
Vin Min, V	3	3	3	3	3	3	3	3
Vout Max, V	60	60	60	60	60	60	60	60

Eco Plan

	LT3492EFE#PBF	LT3492EFE#TRPBF	LT3492EUFD#PBF	LT3492EUFD#TRPBF	LT3492IFE#PBF	LT3492IFE#TRPBF	LT3492IUFD#PBF	LT3492IUFD#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Articles

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Triple Output LED Driver Works with Inputs to 60V and Delivers 3000:1 PWM Dimming &mdash LT Journal
PDF, 325 Kb, File published: Jun 1, 2009
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LвЂ‰DESIGN IDEAS Triple Output LED Driver Works
with Inputs to 60V and Delivers
3000:1 PWM Dimming
by Hua (Walker) Bai
Introduction
The LT3492 is a 60V triple output
LED driver for high input and/or high
output voltage backlighting or direct
lighting applications. A single 4mm Г—
5mm IC can drive a large number of
LEDs, reducing overall solution cost
when compared to less capable drivers.
A built-in gate driver for a disconnect
PMOS in series with the LED string,
along with other techniques, enables
a 3000:1 PWM dimming ratio. When
coupled with the partвЂ™s analog dimming functions, the overall dimming
ratio can be as high as 30,000:1. The
LT3492 can be configured into buckmode, boost-mode or buck-boost
mode, depending on the available input voltage source and the number and
configuration of LEDs to be driven. PVIN
43V to 58V TG1 ISP2 ISP3 330mО© 330mО© 330mО© ISN1 ISN2 ISN3 TG2 M1 M2 68.1k
0.3A 8 LEDs C4 …

Model Line

Series: LT3492 (8)

LT3492EFE#PBF LT3492EFE#TRPBF LT3492EUFD#PBF LT3492EUFD#TRPBF LT3492IFE#PBF LT3492IFE#TRPBF LT3492IUFD#PBF LT3492IUFD#TRPBF

Manufacturer's Classification

Power Management > LED Driver ICs > Step-Up (Boost) LED Drivers | Step-Down (Buck) LED Drivers | Buck-Boost LED Drivers | Multitopology LED Driver