Datasheet Linear Technology LTC3454EDD#PBF — Ficha de datos

Fabricante	Linear Technology
Serie	LTC3454
Numero de parte	LTC3454EDD#PBF

Controlador LED de alta corriente Buck-Boost síncrono 1A

Hojas de datos

PDF, 181 Kb, Revisión: A, Archivo subido: oct 4, 2017

Extracto del documento

Embalaje

Package	3x3 DFN-10
Package Code	DD
Package Index	05-08-1699

Paramétricos

Architecture	Improved Average Output Current Control
Demo Boards	DC875B
Design Tools	LTspice Model
Dimming	PWM & Analog
Export Control	no
Features	Open LED Protection, Soft Start
Frequency	1000 kHz
Isupply	0.825 mA
Max Number of LEDs	1
Monolithic	yes
Number of Outputs	1
Operating Temperature Range	0 to 85 °C
Output Current	1 A
Synchronous	yes
Topology	Buck-Boost, LED Driver
Vin Max	5.5 V
Vin Min	2.7 V
Vout Max	5.15 V

Plan ecológico

RoHS

Obediente

Artículos

Descargar
High Efficiency, Monolithic Synchronous Buck-Boost LED Driver Drives up to 1A Continuous Current &mdash LT Journal
PDF, 376 Kb, Archivo publicado: marzo 28, 2006
Extracto del documento
DESIGN FEATURES High Efп¬Ѓciency, Monolithic
Synchronous Buck-Boost LED Driver
Drives up to 1A Continuous Current
by Aspiyan Gazder Introduction
The LTC3454 is a synchronous buckboost DC/DC converter, designed for
driving a single high power LED with
regulated currents up to 1A from a
single Li-Ion battery. Switching converters are typically used to regulate
a voltage, but LEDs require constant
current to generate predictable light
output. The LTC3454 uses an autozero
transconductance error ampliп¬Ѓer in its
regulation loop to accurately control
LED current. The LED current can
be set to one of four levels, including
shutdown, using two external resistors
and dual enable pins. In shutdown no
current is drawn.
The wide VIN range of a Lithium-Ion
battery (2.7V to 4.2V) requires that a
converter be able to both step-up and
step-down the input voltage when
the LED forward voltage is within the …

Linea modelo

Serie: LTC3454 (2)

LTC3454EDD#PBF LTC3454EDD#TRPBF

Clasificación del fabricante

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

Otros nombres:

LTC3454EDDPBF, LTC3454EDD PBF

Contactos