Datasheet Linear Technology LTC3809EDD#TRPBF — Datenblatt

Hersteller	Linear Technology
Serie	LTC3809
Artikelnummer	LTC3809EDD#TRPBF

Kein Rsense, niedrige EMI, synchroner DC / DC-Controller

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PDF, 298 Kb, Sprache: en, Datei hochgeladen: Sep 23, 2017, Seiten: 24
No RSENSE , Low EMI, Synchronous DC/DC Controller

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Preise

Verpackung

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

Parameter

Architecture	Constant Frequency Current Mode
Design Tools	LTspice Model
Export Control	no
Features	No Rsense, Spread Spectrum, External Synchronization, PLL, Selectable Switching Frequency, Burst Mode, Power Good, 100% Duty Cycle
Frequency	750 kHz
Frequency Adjust Range	300kHz, 550kHz, 750kHz
Frequency Sync Range	250kHz - 750kHz
Integrated Inductor	no
Ishutdown	9 µA
Isupply	0.35 mA
Max Phases	1
Monolithic	no
Number of Outputs	1
Operating Temperature Range	0 to 85 °C
Output Current	5 A
Polyphase	no
Sense Resistor	None
Switch Current	5 A
Synchronous	yes
Topology	Buck
Vin Max	9.8 V
Vin Min	2.75 V
Vout Max	9.8 V
Vout Maximum	Vin
Vout Min	0.6 V
Vref Accuracy Over Temp	1.5 %

Öko-Plan

RoHS

Compliant

Konstruktionshinweise

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Low EMI Synchronous DC/DC Step-Down Controllers Offer Programmable Output Tracking &mdash DN382
PDF, 122 Kb, Datei veröffentlicht: Dec 9, 2005
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advertisement Low EMI Synchronous DC/DC Step-Down Controllers Offer
Programmable Output Tracking вЂ“ Design Note 382
Charlie Zhao
Introduction
The LTCВ® 3808 synchronous DC/DC step-down controller
packs numerous features required by the latest electronic
devices into a low proп¬Ѓle (0.75mm) 3mm Г— 4mm leadless
DFN package or a leaded SSOP-16 package. Two similar
parts, the LTC3809 and LTC3809-1, are even smaller, but
less feature-rich versions of the LTC3808. The LTC3809
family is available in a 3mm Г— 3mm leadless DFN package
or a 10-pin MSOP Exposed Pad package. All three parts
can provide output voltages as low as 0.6V and output
currents as high as 7A from a 2.75V to 9.8V input range,
making them ideal devices for one or two lithium-ion cell
inputs as well as distributed DC power systems.
The LTC3808 and LTC3809 also include important
features for noise-sensitive applications, including a
phase-locked loop (PLL) for frequency synchronization
and spread spectrum frequency modulation to minimize
generated electromagnetic interference (EMI). The
adjustable operating frequency (300kHz to 750kHz) allows
the use of small surface mount inductors and ceramic …

Modellreihe

Serie: LTC3809 (4)

LTC3809EDD#PBF LTC3809EDD#TRPBF LTC3809EMSE#PBF LTC3809EMSE#TRPBF

Herstellerklassifikation

Power Management > Switching Regulator > Step-Down (Buck) Regulators > External Power Switch Buck Controllers

Andere Namen:

LTC3809EDDTRPBF, LTC3809EDD TRPBF

Verwandte Veröffentlichungen

Datenblätter Datasheet Analog Devices LTC3809

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