Datasheet Linear Technology LTC3443EDE#TRPBF — Ficha de datos

Fabricante	Linear Technology
Serie	LTC3443
Numero de parte	LTC3443EDE#TRPBF

Convertidor CC / CC síncrono Buck-Boost de alta potencia de 600 kHz

Hojas de datos

PDF, 233 Kb, Revisión: A, Archivo subido: sept 21, 2017

Extracto del documento

Embalaje

Package	4x3 DFN-12
Package Code	DE/UE
Package Index	05-08-1695

Paramétricos

Architecture	Constant Frequency Current Mode
Demo Boards	DC755A
Design Tools	LTspice Model
Export Control	no
Features	Output Disconnect, Burst Mode, External Synchronization
Frequency	600 kHz
Frequency Sync Range	600kHz - 1.2MHz
Integrated Inductor	no
Ishutdown	0.1 µA
Isupply	0.028 mA
Monolithic	yes
Number of Outputs	1
Operating Temperature Range	0 to 85 °C
Output Current	1.2 A
Polyphase	no
Synchronous	yes
Topology	Buck-Boost
Vin Max	5.5 V
Vin Min	2.4 V
Vout Max	5.25 V
Vout Min	2.4 V

Plan ecológico

RoHS

Obediente

Notas de Diseño

Descargar
Simple Battery Circuit Extends Power over Ethernet (PoE) Peak Current &mdash DN361
PDF, 82 Kb, Archivo publicado: feb 17, 2005
Extracto del documento
Simple Battery Circuit Extends Power over Ethernet (POE)
Peak Current вЂ“ Design Note 361
Mark Gurries
Introduction
Power over Ethernet (PoE) is a new development that allows for the delivery of power to Ethernet-based devices
via standard Ethernet CAT5 cable, precluding the need
for wall adapters or other external power sources. The
PoE speciп¬Ѓcation deп¬Ѓnes a hardware detection protocol
where Power Sourcing Equipment (PSE) is able to identify
PoE Powered Devices (PDs), thus allowing full backwards
compatibility with non-PoE-aware (legacy) Ethernet devices. The PoE speciп¬Ѓcation also sets an upper limit
on the power that can be drawn by a PD. The problem
is: what happens when a PD must draw more power
than allowed by the PoE standard? Examples may be
the spin up of a disk drive or a period of sustained
transmission of data from an RF transmitter. If the
average power load of these applications is less than
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks
and PowerPath is a trademark of Linear Technology Corporation. All other
trademarks are the property of their respective owners. L1
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Artículos

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Buck-Boost Converter Minimizes Output Voltage Transients from Very Low to High Output Current &mdash LT Journal
PDF, 144 Kb, Archivo publicado: marzo 25, 2005
Extracto del documento
DESIGN IDEAS Buck-Boost Converter Minimizes
Output Voltage Transients from
Very Low to High Output Current
Introduction
Most handheld devices incorporate
a low power mode (Burst Mode operation) to save precious battery life
during an extended period of inactivity.
Transitions from Burst Mode operation, however, can induce transient
perturbations in the output voltage,
which drain the battery unnecessarily.
The LTC3443 Buck-Boost converter
minimizes output voltage transient
perturbations, and thus realizes the
promise of Burst Mode operation to
significantly increase battery run
time.
The LTC3443 incorporates an adaptive clamp on the VC pinвЂ”active during
Burst Mode operationвЂ”which holds
the error amp integrator capacitor
to a п¬Ѓxed voltage determined by the
input and output voltage. The clamp
is removed when the LTC3443 is commanded out of Burst Mode operation.
In this way, the compensation capacitors are already close to the nominal …

Linea modelo

Serie: LTC3443 (2)

LTC3443EDE#PBF LTC3443EDE#TRPBF

Clasificación del fabricante

Power Management > Switching Regulator > Buck-Boost Regulators > Internal Power Switch Buck-Boost

Otros nombres:

LTC3443EDETRPBF, LTC3443EDE TRPBF

Contactos