Datasheet Linear Technology LTC1735IF#TRPBF — Ficha de datos

FabricanteLinear Technology
SerieLTC1735
Numero de parteLTC1735IF#TRPBF

Regulador de conmutación descendente síncrono de alta eficiencia

Hojas de datos

Datasheet LTC1735
PDF, 415 Kb, Idioma: en, Archivo subido: sept 20, 2017, Páginas: 32
High Efficiency Synchronous Step-Down Switching Regulator
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Precios

Embalaje

PackageTSSOP-20
Package CodeF
Package Index05-08-1650 (F20)

Paramétricos

ArchitectureConstant Frequency Current Mode
Demo BoardsDC222A,DC247A
Design ToolsLTspice Model
Export Controlno
FeaturesExternal Synchronization, Resistor Set Frequency, Active Voltage Positioning, Power Good, Soft Start
Frequency300 kHz
Frequency Adjust RangeUp to 500kHz
Frequency Sync RangeUp to 500kHz
Integrated Inductorno
Ishutdown15 µA
Isupply0.45 mA
Max Phases1
Monolithicno
Number of Outputs1
Operating Temperature Range-40 to 85 °C
Output Current20 A
Polyphaseno
Sense ResistorRsense
Switch Current20 A
Synchronousyes
TopologyBuck
Vin Max36 V
Vin Min3.5 V
Vout Max7 V
Vout Maximum7V
Vout Min0.8 V
Vref Accuracy Over Temp1 %

Plan ecológico

RoHSObediente

Notas de aplicación

  • OPTI-LOOP Architecture Reduces Output Capacitance and Improves Transient Response &mdash AN76
    PDF, 271 Kb, Archivo publicado: mayo 1, 1999
    Loop compensation is an uncomfortable subject for many engineers. Experienced power supply designers know that optimum loop compensation is necessary to get the best performance from their power supplies. This application note discusses power supply loop compensation utilizing the features provided by the OPTILOOPTM architecture. Loop compensation basics are presented and simple equations are given for frequency response approximations. Typical transient response requirements for the system supply and CPU supply, used in notebook computers, are discussed. Output voltage transient response waveforms and Bode plots are shown for both optimized and nonoptimized control loops as well as for circuits with optimized loops using different output capacitors. Although this publication focuses on circuits using the LTC1628, LTC1735 and LTC1736, the information applies to all regulators equipped with OPTI-LOOP architecture.
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Notas de Diseño

  • Active Voltage Positioning Reduces Output Capacitors &mdash Design Solutions 10
    PDF, 130 Kb, Archivo publicado: nov 1, 1999
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  • LTC1735 Provides Low Cost, Efficient Mobile CPU Power &mdash DN199
    PDF, 78 Kb, Archivo publicado: marzo 1, 1999
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  • 2-Step Voltage Regulation Improves Performance and Decreases CPU Temperature in Portable Computers &mdash DN209
    PDF, 79 Kb, Archivo publicado: agosto 1, 1999
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  • Microprocessor Core Supply Voltage Set by I2C Bus Without VID Lines &mdash DN279
    PDF, 75 Kb, Archivo publicado: marzo 1, 2002
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Artículos

  • Third-Generation DC/DC Controllers Reduce Size and Cost &mdash LT Journal
    PDF, 140 Kb, Archivo publicado: feb 1, 1999
    Extracto del documento
  • Active Voltage Positioning Saves Output Capacitors in Portable Computer Applications &mdash LT Journal
    PDF, 169 Kb, Archivo publicado: feb 1, 2000
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  • LTC1645/LTC1735 Circuit Solves PCI Power Problem &mdash LT Journal
    PDF, 232 Kb, Archivo publicado: feb 1, 2000
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  • A Third Generation Dual, Opposing-Phase Switching Regulator Controller &mdash LT Journal
    PDF, 172 Kb, Archivo publicado: jun 1, 1999
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  • SMBus Controls CPU Voltage Regulators without VID Pins &mdash LT Journal
    PDF, 148 Kb, Archivo publicado: sept 1, 2001
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Linea modelo

Clasificación del fabricante

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

Otros nombres:

LTC1735IFTRPBF, LTC1735IF TRPBF