Datasheet Linear Technology LTC3729LEUH-6#PBF — Datenblatt

Hersteller	Linear Technology
Serie	LTC3729L-6
Artikelnummer	LTC3729LEUH-6#PBF

PolyPhase, synchroner Abwärtsschaltregler

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PDF, 356 Kb, Sprache: en, Datei hochgeladen: Sep 23, 2017, Seiten: 28
PolyPhase, Synchronous Step-Down Switching Regulator

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Verpackung

Package	5x5 QFN-32
Package Code	UH
Package Index	05-08-1693

Parameter

Architecture	Constant Frequency Current Mode
Design Tools	LTspice Model
Export Control	no
Features	PolyPhase
Frequency	550 kHz
Integrated Inductor	no
Ishutdown	20 µA
Isupply	0.47 mA
Max Phases	2, 3, 4, 6, 8, 12
Monolithic	no
Number of Outputs	1
Operating Temperature Range	0 to 85 °C
Output Current	40 A
Polyphase	yes
Sense Resistor	Rsense
Switch Current	40 A
Synchronous	yes
Topology	Buck
Vin Max	30 V
Vin Min	4 V
Vout Max	5 V
Vout Maximum	5V
Vout Min	0.6 V
Vref Accuracy Over Temp	1 %

Öko-Plan

RoHS

Compliant

Anwendungshinweise

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PCB Layout Considerations for Non-Isolated Switching Power Supplies &mdash AN136
PDF, 215 Kb, Datei veröffentlicht: Sep 20, 2012
The best news when you power up a prototype supply board for the very first time is when it not only works, but also runs quiet and cool. Unfortunately, this does not always happen. A common problem of switching power supplies is “unstable” switching waveforms. Sometimes, waveform jittering is so pronounced that audible noise can be heard from the magnetic components. If the problem is related to the printed circuit board (PCB) layout, identifying the cause can be difficult. This is why proper PCB layout at the early stage of a switching supply design is very critical. Its importance cannot be overstated.
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Application Note 136
June 2012
PCB Layout Considerations for Non-Isolated Switching
Power Supplies
Henry J. Zhang
Introduction
The best news when you power up a prototype supply board
for the very first time is when it not only works, but also
runs quiet and cool. Unfortunately, this does not always
happen. A common problem of switching power supplies
is вЂњunstableвЂќ switching waveforms. Sometimes, waveform
jittering is so pronounced that audible noise can be heard
from the magnetic components. If the problem is related
to the printed circuit board (PCB) layout, identifying the
cause can be difficult. This is why proper PCB layout at
the early stage of a switching supply design is very critical.
Its importance cannot be overstated.
The power supply designer is the person who best understands the technical details and functional requirements of
the supply within the final product. He or she should work
closely with the PCB layout designer on the critical supply
layout from the beginning. A good layout design optimizes
supply efficiency, alleviates thermal stress, and most importantly, minimizes the noise and interactions among traces
and components. To achieve these, it is important for the …

Modellreihe

Serie: LTC3729L-6 (2)

LTC3729LEUH-6#PBF LTC3729LEUH-6#TRPBF

Herstellerklassifikation

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

Andere Namen:

LTC3729LEUH-6PBF, LTC3729LEUH-6 PBF, LTC3729LEUH6#PBF, LTC3729LEUH 6#PBF