Datasheet Linear Technology LTC3729EUH#PBF — Ficha de datos

FabricanteLinear Technology
SerieLTC3729
Numero de parteLTC3729EUH#PBF

550kHz, PolyPhase, alta eficiencia, regulador de conmutación descendente síncrono

Hojas de datos

Datasheet LTC3729
PDF, 356 Kb, Idioma: en, Archivo subido: sept 23, 2017, Páginas: 30
550kHz, PolyPhase, High Efficiency, Synchronous Step-Down Switching Regulator
Extracto del documento

Precios

Embalaje

Package5x5 QFN-32
Package CodeUH
Package Index05-08-1693

Paramétricos

ArchitectureConstant Frequency Current Mode
Demo BoardsDC509B
Design ToolsLTspice Model
Export Controlno
FeaturesPolyPhase
Frequency550 kHz
Integrated Inductorno
Ishutdown20 µA
Isupply0.58 mA
Max Phases2, 3, 4, 6, 8, 12
Monolithicno
Number of Outputs1
Operating Temperature Range0 to 85 °C
Output Current40 A
Polyphaseyes
Sense ResistorRsense
Switch Current40 A
Synchronousyes
TopologyBuck
Vin Max36 V
Vin Min4 V
Vout Max5 V
Vout Maximum5V
Vout Min0.8 V
Vref Accuracy Over Temp1 %

Plan ecológico

RoHSObediente

Notas de aplicación

  • PCB Layout Considerations for Non-Isolated Switching Power Supplies &mdash AN136
    PDF, 215 Kb, Archivo publicado: sept 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.
    Extracto del documento

Notas de Diseño

  • Active Voltage Positioning Reduces Output Capacitors &mdash Design Solutions 10
    PDF, 130 Kb, Archivo publicado: nov 1, 1999
    Extracto del documento

Artículos

  • Low Voltage, High Current DC/DC Power Supply with Load Sharing and Redundancy &mdash LT Journal
    PDF, 183 Kb, Archivo publicado: agosto 9, 2004
    Extracto del documento

Linea modelo

Clasificación del fabricante

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

Otros nombres:

LTC3729EUHPBF, LTC3729EUH PBF