Datasheet Linear Technology LTC3453 — Ficha de datos

Fabricante	Linear Technology
Serie	LTC3453

Controlador LED blanco de alta potencia Buck-Boost síncrono

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PDF, 204 Kb, Revisión: A, Archivo subido: oct 4, 2017

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Embalaje

	LTC3453EUF#PBF	LTC3453EUF#TRPBF
N	1	2
Package	4x4 QFN-16 Dibujo del esquema del paquete	4x4 QFN-16 Dibujo del esquema del paquete
Package Code	UF	UF
Package Index	05-08-1692	05-08-1692
Pin Count	16	16

Paramétricos

Parameters / Models	LTC3453EUF#PBF	LTC3453EUF#TRPBF
Architecture	Independently Controlled Individual Current Sinks	Independently Controlled Individual Current Sinks
Demo Boards	DC810A	DC810A
Design Tools	LTspice Model	LTspice Model
Dimming	DC	DC
Export Control	no	no
Features	Open LED Protection, Soft Start	Open LED Protection, Soft Start
Frequency, kHz	1000	1000
Ishutdown, µA	6	6
Isupply, mA	0.6	0.6
Max Number of LEDs	4 (parallel)	4 (parallel)
Monolithic	yes	yes
Number of Outputs	4	4
Operating Temperature Range, °C	0 to 85	0 to 85
Output Current, A	0.125	0.125
Synchronous	yes	yes
Topology	Buck-Boost, LED Driver	Buck-Boost, LED Driver
Vin Max, V	5.5	5.5
Vin Min, V	2.7	2.7
Vout Max, V	4.5	4.5

Plan ecológico

	LTC3453EUF#PBF	LTC3453EUF#TRPBF
RoHS	Obediente	Obediente

Notas de Diseño

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Tiny, Efficient High Power LED Camera Flash Solutions for Cell Phone Applications &mdash DN1009
PDF, 69 Kb, Archivo publicado: oct 1, 2004
Extracto del documento
advertisement Tiny, Efficient High Power LED Camera Flash Solutions for
Cell Phone Applications вЂ“ Design Note 1009
Keith Szolusha
Introduction
Cell phones and PDAs are approaching the limit for small
form factors, but their feature sets are growing with new
functions such as built-in cameras and even video cameras.
The initial in-phone cameras were basic, low resolution devices with little in the way of usable flash capability. However, cell phone camera resolutions have improved and
sophisticated flash technology is expected to keep pace.
There are two flash technologies used in digital still cameras. The first uses a Xenon flash lamp to provide a very
short, high lumen flash with excellent spectral characteristics. LTC offers Xenon photoflash solutions that are
simple, compact and efficient (see Design Note 345).
The second flash technology uses LEDs. LED solutions hold
the upper hand when simplicity and space is at a premium
and they are the only choice when вЂ?torchвЂ™ or video-mode
lighting is required. LED flash units fit into spaces where
even the smallest Xenon photoflash cannot. Until recently,
LEDs could not compete with Xenon solutions in light
output and spectral performance, relegating them to the
realm of low resolution (sub 1 megapixel) cameras. However, recent (>10Г—) performance improvements have made LEDs an attractive solution for the now popular 1 megapixel
and higher cell phone cameras.
Linear Technology offers many simple and extremely
compact solutions for driving the latest high-light-output LEDs, including Lumileds Luxeon Flash LEDs. These …

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Serie: LTC3453 (2)

LTC3453EUF#PBF LTC3453EUF#TRPBF

Clasificación del fabricante

Power Management > LED Driver ICs > Buck-Boost LED Drivers