Inicio Gestión de la energía AC/DC & DC/DC converters (integrated FET)
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Gestión de la energía
AC/DC & DC/DC converters (integrated FET)

LM3269

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Convertidor reductor/de impulso de transición sin problemas para amplificadores de potencia RF LTE y

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LM3269

ACTIVO
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Detalles del producto

Iout (max) (A) 0.75 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Topology Buck Type Converter Switching frequency (min) (kHz) 2100 Switching frequency (max) (kHz) 2700 Features Adaptive/Dynamic Voltage Scaling, Enable, Over Current Protection, Pre-Bias Start-Up, Soft Start Fixed, Synchronous Rectification, UVLO fixed Control mode current mode Vout (min) (V) 0.6 Vout (max) (V) 4.2 Rating Catalog Operating temperature range (°C) -30 to 85 Iq (typ) (A) 0.0009
Iout (max) (A) 0.75 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Topology Buck Type Converter Switching frequency (min) (kHz) 2100 Switching frequency (max) (kHz) 2700 Features Adaptive/Dynamic Voltage Scaling, Enable, Over Current Protection, Pre-Bias Start-Up, Soft Start Fixed, Synchronous Rectification, UVLO fixed Control mode current mode Vout (min) (V) 0.6 Vout (max) (V) 4.2 Rating Catalog Operating temperature range (°C) -30 to 85 Iq (typ) (A) 0.0009
DSBGA (YZR) 12 3.9375 mm² 2.25 x 1.75
  • Operates From a Single Li-Ion Cell: 2.7 V to 5.5 V
  • Adjustable Output Voltage: 0.6 V to 4.2 V
  • Automatic PFM or PWM Mode Change
  • 750-mA Maximum Load Capability for
    VBATT ≥ 3 V, VOUT = 3.8 V
  • 2.4-MHz (typical) Switching Frequency
  • Seamless Buck-Boost Mode Transition
  • Fast Output Voltage Transition: 1.4 V to 3 V
    in 10 µs
  • High-Efficiency: 95% typical at VBATT = 3.7 V,
    VOUT = 3.3 V, at 300 mA
  • Input Overcurrent Limit
  • Internal Compensation
  • Operates From a Single Li-Ion Cell: 2.7 V to 5.5 V
  • Adjustable Output Voltage: 0.6 V to 4.2 V
  • Automatic PFM or PWM Mode Change
  • 750-mA Maximum Load Capability for
    VBATT ≥ 3 V, VOUT = 3.8 V
  • 2.4-MHz (typical) Switching Frequency
  • Seamless Buck-Boost Mode Transition
  • Fast Output Voltage Transition: 1.4 V to 3 V
    in 10 µs
  • High-Efficiency: 95% typical at VBATT = 3.7 V,
    VOUT = 3.3 V, at 300 mA
  • Input Overcurrent Limit
  • Internal Compensation

The LM3269 is buck-boost DC-DC converter designed to generate output voltages above or below a given input voltage and is particularly suitable for portable applications powered by a single-cell Li-ion battery.

The LM3269 operates at a 2.4-MHz typical switching frequency in full synchronous operation and provides seamless transitions between buck and boost operating regimes. The LM3269 operates in energy-saving Pulse Frequency Modulation (PFM) mode for increased efficiencies and current savings during low-power RF transmission modes.

The power converter topology needs only one inductor and two capacitors. A unique internal power switch topology enables high overall efficiency.

The LM3269 is internally compensated for buck and boost modes of operation, thus providing an optimal transient response.

When considering using the LM3269 in a system design, please review the layout instructions at the end of this document.

The LM3269 is buck-boost DC-DC converter designed to generate output voltages above or below a given input voltage and is particularly suitable for portable applications powered by a single-cell Li-ion battery.

The LM3269 operates at a 2.4-MHz typical switching frequency in full synchronous operation and provides seamless transitions between buck and boost operating regimes. The LM3269 operates in energy-saving Pulse Frequency Modulation (PFM) mode for increased efficiencies and current savings during low-power RF transmission modes.

The power converter topology needs only one inductor and two capacitors. A unique internal power switch topology enables high overall efficiency.

The LM3269 is internally compensated for buck and boost modes of operation, thus providing an optimal transient response.

When considering using the LM3269 in a system design, please review the layout instructions at the end of this document.
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Documentación técnica

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Tipo Título Fecha
* Data sheet LM3269 Seamless-Transition Buck-Boost Converter for 3G and 4G RF Power Amplifiers datasheet (Rev. D) PDF | HTML 14 abr 2015
Selection guide Power Management Guide 2018 (Rev. R) 25 jun 2018
Application note HS Load/Line Transient Jigs and App Rpt for Testing POL Regulators 30 abr 2013
User guide LM3269 Evaluation Board 28 feb 2013

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

LM3269EVM — Convertidor reductor de impulso CC/CC RF LM3269EVM con módulo de evaluación de transición de modo si

The LM3269 evaluation module facilitates evaluation of this RF DC/DC buck-boost converter with seamless mode transition. The LM3269 output voltage can be adjusted from 0.6V to 4.2V by changing the voltage on the analog VCON pin.

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DSBGA (YZR) 12 Ver opciones
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  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

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