Inicio Gestión de la energía Convertidores de CA/CC y CC/CC (FET integrado)
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Gestión de la energía
Convertidores de CA/CC y CC/CC (FET integrado)

LM3679

ACTIVO

Convertidor CC-CC reductor en miniatura de 350 mA y 3 MHz para aplicaciones de perfil ultrabajo

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TPS62843 ACTIVO Convertidor reductor de 600 mA con IQ ultrabaja y entrada de 1.8 V a 5.5 V Smaller solution size with 275-nA IQ and 0.4-V to 3.6-V VOUT

LM3679

ACTIVO
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Detalles del producto

Rating Catalog Operating temperature range (°C) -30 to 85 Topology Buck Type Converter Iout (max) (A) 0.35 Vin (min) (V) 2.5 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 2500 Switching frequency (max) (kHz) 3500 Features Enable, Light Load Efficiency, Light load efficiency, Synchronous Rectification Control mode Voltage mode Vout (min) (V) 1.8 Vout (max) (V) 1.8 Iq (typ) (µA) 16 Duty cycle (max) (%) 100
Rating Catalog Operating temperature range (°C) -30 to 85 Topology Buck Type Converter Iout (max) (A) 0.35 Vin (min) (V) 2.5 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 2500 Switching frequency (max) (kHz) 3500 Features Enable, Light Load Efficiency, Light load efficiency, Synchronous Rectification Control mode Voltage mode Vout (min) (V) 1.8 Vout (max) (V) 1.8 Iq (typ) (µA) 16 Duty cycle (max) (%) 100
DSBGA (YPD) 5 2.02 mm² 1.616 x 1.25

  • 16 µA typical quiescent current
  • 350 mA maximum load capability
  • 3 MHz PWM fixed switching frequency (typ)
  • Automatic PFM/PWM mode switching
  • Available in 5-bump micro SMD package and UR package
  • Internal synchronous rectification for high efficiency
  • Internal soft start
  • 0.01 µA typical shutdown current
  • Operates from a single Li-Ion cell battery
  • Current overload and Thermal shutdown protection
  • Three external components required for typical applications
  • Low profile solution (0.55mm max height, includes four external components)
    •

  • 16 µA typical quiescent current
  • 350 mA maximum load capability
  • 3 MHz PWM fixed switching frequency (typ)
  • Automatic PFM/PWM mode switching
  • Available in 5-bump micro SMD package and UR package
  • Internal synchronous rectification for high efficiency
  • Internal soft start
  • 0.01 µA typical shutdown current
  • Operates from a single Li-Ion cell battery
  • Current overload and Thermal shutdown protection
  • Three external components required for typical applications
  • Low profile solution (0.55mm max height, includes four external components)
    •

    The LM3679 step-down DC-DC converter is optimized for powering ultra-low voltage circuits from a single Li-Ion cell battery and input voltage rails from 2.5V to 5.5V. It provides up to 350mA load current, over the entire input voltage range. The LM3679 output voltage can be configured to 1.2V, 1.5V, or 1.8V.

    The device offers superior features and performance for mobile phones and similar portable applications with complex power management systems. Automatic intelligent switching between PWM low-noise and PFM low-current mode offers improved system control. During PWM mode operation, the device operates at a fixed-frequency of 3 MHz (typ). PWM mode drives loads from ~ 80mA to 350mA max. Hysteretic PFM mode extends the battery life by reducing the quiescent current to 16 µA (typ) during light load and standby operation. Internal synchronous rectification provides high efficiency. In shutdown mode (Enable pin pulled low), the device turns off and reduces battery consumption to 0.01 µA (typ).

    The LM3679 is available in a lead-free (No PB) 5-bump micro SMD package, 0.6mm height, and in an ultra thin 0.3mm height UR package. Using the UR package along with specific external components, allows for a low profile solution size with a max height of 0.55mm. A switching frequency of 3 MHz (typ) allows use of tiny surface-mount components. Only three external surface-mount components, an inductor and two ceramic capacitors, are required. .

    The LM3679 step-down DC-DC converter is optimized for powering ultra-low voltage circuits from a single Li-Ion cell battery and input voltage rails from 2.5V to 5.5V. It provides up to 350mA load current, over the entire input voltage range. The LM3679 output voltage can be configured to 1.2V, 1.5V, or 1.8V.

    The device offers superior features and performance for mobile phones and similar portable applications with complex power management systems. Automatic intelligent switching between PWM low-noise and PFM low-current mode offers improved system control. During PWM mode operation, the device operates at a fixed-frequency of 3 MHz (typ). PWM mode drives loads from ~ 80mA to 350mA max. Hysteretic PFM mode extends the battery life by reducing the quiescent current to 16 µA (typ) during light load and standby operation. Internal synchronous rectification provides high efficiency. In shutdown mode (Enable pin pulled low), the device turns off and reduces battery consumption to 0.01 µA (typ).

    The LM3679 is available in a lead-free (No PB) 5-bump micro SMD package, 0.6mm height, and in an ultra thin 0.3mm height UR package. Using the UR package along with specific external components, allows for a low profile solution size with a max height of 0.55mm. A switching frequency of 3 MHz (typ) allows use of tiny surface-mount components. Only three external surface-mount components, an inductor and two ceramic capacitors, are required. .

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    Documentación técnica

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    Tipo Título Fecha
    * Data sheet 3MHz, 350mA Mini Step-Down DC-DC Conv for Ultra Low Profile Apps (ht < 0.55mm) datasheet (Rev. A) 05 feb 2008
    EVM User's guide AN-1682 LM3679TL Evaluation Board (Rev. C) 30 abr 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.

    Encapsulado Pines Símbolos CAD, huellas y modelos 3D
    DSBGA (YPD) 5 Ultra Librarian
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    Pedidos y calidad

    Información incluida:
    • RoHS
    • 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

    Soporte y capacitación

    Foros de TI E2E™ con asistencia técnica de los ingenieros de TI

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