Datasheet Linear Technology LTC3539 — Ficha de datos

Fabricante	Linear Technology
Serie	LTC3539

2A, 1MHz / 2MHz Convertidores CC / CC sincrónicos elevadores

Hojas de datos

Vista previa y descarga

PDF, 194 Kb, Idioma: en, Archivo subido: sept 21, 2017, Páginas: 14
2A, 1MHz/2MHz Synchronous Step-Up DC/DC Converters

Extracto del documento

Precios

Embalaje

	LTC3539EDCB#PBF	LTC3539EDCB#TRMPBF	LTC3539EDCB#TRPBF
N	1	2	3
Package	2x3 DFN-8 Dibujo del esquema del paquete	2x3 DFN-8 Dibujo del esquema del paquete	2x3 DFN-8 Dibujo del esquema del paquete
Package Code	DCB	DCB	DCB
Package Index	05-08-1718	05-08-1718	05-08-1718
Pin Count	8	8	8

Paramétricos

Parameters / Models	LTC3539EDCB#PBF	LTC3539EDCB#TRMPBF	LTC3539EDCB#TRPBF
Architecture	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode
Demo Boards	DC1260A-A,DC1260A-B	DC1260A-A,DC1260A-B	DC1260A-A,DC1260A-B
Design Tools	LTspice File	LTspice File	LTspice File
Export Control	no	no	no
Features	Output Disconnect, Burst Mode	Output Disconnect, Burst Mode	Output Disconnect, Burst Mode
Frequency, kHz	2000	2000	2000
Frequency Adjust Range	1MHz or 2MHz	1MHz or 2MHz	1MHz or 2MHz
Integrated Inductor	no	no	no
Ishutdown, µA	0.01	0.01	0.01
Isupply, mA	0.01	0.01	0.01
Monolithic	yes	yes	yes
Number of Outputs	1	1	1
Operating Temperature Range, °C	0 to 85	0 to 85	0 to 85
Polyphase	no	no	no
Switch Current, A	2.6	2.6	2.6
Synchronous	yes	yes	yes
Topology	Boost	Boost	Boost
Vin Max, V	5	5	5
Vin Min, V	0.5	0.5	0.5
Vin Min Startup, V	0.7	0.7	0.7
Vout Max, V	5.25	5.25	5.25
Vout Min, V	1.5	1.5	1.5
Vswitch Max, V	6	6	6

Plan ecológico

	LTC3539EDCB#PBF	LTC3539EDCB#TRMPBF	LTC3539EDCB#TRPBF
RoHS	Obediente	Obediente	Obediente

Otras opciones

LTC3539-2 LTC3539-2

Notas de Diseño

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Complete Energy Utilization Improves Run Time of a Supercap Ride-Through Application by 40% &mdash DN485
PDF, 106 Kb, Archivo publicado: oct 26, 2010
Extracto del documento
Complete Energy Utilization Improves Run Time of a Supercap
Ride-Through Application by 40% вЂ“ Design Note 485
George H. Barbehenn
Introduction
Many electronic systems require a local power source that
allows them to ride through brief main power interruptions without shutting down. Some local power sources
must be available to carry out a controlled shutdown if
the main power input is abruptly removed. Complete Energy Utilization Maximizes Run Time
of Supercap Ride-Through Application
Figure 1 shows a complete 3.3V/200mA ride-through application that maximizes the amount of power extracted
from the supercap to support the load. A battery backup can supply power in the event of a
mains shutdown, but batteries are not well suited to
this particular application. Although batteries can store
signiп¬Ѓcant amounts of energy, they cannot deliver much
power due to their signiп¬Ѓcant source impedance. Also,
batteries have п¬Ѓnite lives of ~2 to 3 years, and the maintenance required for rechargeable batteries is substantial. The LTC В®4425 complete 2A supercapacitor charger. It
clamps the individual cell voltages to ensure that the
cells do not overvoltage during charging and balances
the cells throughout charge and discharge. The main components of the ride-through application
include: The LTC3606 micropower buck regulator produces
the regulated 3.3V output. Supercapacitors are well suited to such ride-through
applications. Their low source impedance allows them
to supply signiп¬Ѓcant power for a relatively short time, …

Linea modelo

Serie: LTC3539 (3)

LTC3539EDCB#PBF LTC3539EDCB#TRMPBF LTC3539EDCB#TRPBF

Clasificación del fabricante

Power Management > Switching Regulator > Step-Up (Boost) Regulators > Micropower Boost | Internal Power Switch Boost