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LMR51440

ACTIVO

Convertidor reductor síncrono de 36 V y 4 A

Detalles del producto

Rating Catalog Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 4 Vin (min) (V) 4 Vin (max) (V) 36 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 1100 Features Enable, Forced PWM, Light Load Efficiency, Power good, Spread Spectrum, Synchronous Rectification, UVLO adjustable EMI features Spread Spectrum Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 28 Iq (typ) (µA) 25 Duty cycle (max) (%) 97.4
Rating Catalog Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 4 Vin (min) (V) 4 Vin (max) (V) 36 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 1100 Features Enable, Forced PWM, Light Load Efficiency, Power good, Spread Spectrum, Synchronous Rectification, UVLO adjustable EMI features Spread Spectrum Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 28 Iq (typ) (µA) 25 Duty cycle (max) (%) 97.4
WSON (DRR) 12 9 mm² 3 x 3
  • Functional Safety-Capable
  • Configured for rugged industrial applications
    • Wide Input voltage range: 4 V to 36 V
    • 4-A or 5-A continuous output current
    • ±1.0% tolerance voltage reference at room temperature
    • Minimum switching-on time: 75 ns (typical)
    • Low Quiescent current: 25 µA
    • Adjustable Frequency: 200 kHz to 1.1 MHz
    • Frequency spread spectrum (PFM variant)
    • Protection features
      • Precision enable input
      • Open-drain PGOOD
      • VIN undervoltage lockout (UVLO)
      • Cycle-by-cycle current limiting
      • Short-circuit protection with hiccup mode
      • Thermal shutdown
    • Low dropout mode operation
    • Junction temperature range: –40°C to 150°C
  • Small solution size and ease of use
    • Integrated synchronous rectification
    • Internal compensation for ease of use
    • WSON-12 package
  • Various options in pin-to-pin compatible package
    • PFM and forced PWM (FPWM) options
  • Create a custom design using the LMR5144x0 with the WEBENCH® Power Designer
  • Functional Safety-Capable
  • Configured for rugged industrial applications
    • Wide Input voltage range: 4 V to 36 V
    • 4-A or 5-A continuous output current
    • ±1.0% tolerance voltage reference at room temperature
    • Minimum switching-on time: 75 ns (typical)
    • Low Quiescent current: 25 µA
    • Adjustable Frequency: 200 kHz to 1.1 MHz
    • Frequency spread spectrum (PFM variant)
    • Protection features
      • Precision enable input
      • Open-drain PGOOD
      • VIN undervoltage lockout (UVLO)
      • Cycle-by-cycle current limiting
      • Short-circuit protection with hiccup mode
      • Thermal shutdown
    • Low dropout mode operation
    • Junction temperature range: –40°C to 150°C
  • Small solution size and ease of use
    • Integrated synchronous rectification
    • Internal compensation for ease of use
    • WSON-12 package
  • Various options in pin-to-pin compatible package
    • PFM and forced PWM (FPWM) options
  • Create a custom design using the LMR5144x0 with the WEBENCH® Power Designer

The LMR514x0 is a wide-VIN, easy-to-use synchronous buck converter capable of driving up to 4-A or 5-A load current. With a wide input range of 4 V to 36 V, the device is suitable for a wide range of industrial applications for power conditioning from an unregulated source.

The LMR514x0 features adjustable switching frequency from 200 kHz to 1.1 MHz with an external resistor, which provides the flexibility to optimize either efficiency or external component size. The device has PFM version to realize high efficiency at light load and FPWM version to achieve constant frequency, and small output voltage ripple over the full load range. Soft-start and compensation circuits are implemented internally which allows the device to be used with minimum external components.

The device has built-in protection features, such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation. The LMR514x0 is available in WSON-12 package.

The LMR514x0 is a wide-VIN, easy-to-use synchronous buck converter capable of driving up to 4-A or 5-A load current. With a wide input range of 4 V to 36 V, the device is suitable for a wide range of industrial applications for power conditioning from an unregulated source.

The LMR514x0 features adjustable switching frequency from 200 kHz to 1.1 MHz with an external resistor, which provides the flexibility to optimize either efficiency or external component size. The device has PFM version to realize high efficiency at light load and FPWM version to achieve constant frequency, and small output voltage ripple over the full load range. Soft-start and compensation circuits are implemented internally which allows the device to be used with minimum external components.

The device has built-in protection features, such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation. The LMR514x0 is available in WSON-12 package.

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Documentación técnica

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Tipo Título Fecha
* Data sheet LMR514x0, 36-V, 4-A/5-A Synchronous Step-Down DC/DC Converter With Low IQ datasheet PDF | HTML 05 dic 2022
Functional safety information LMR51440 and LMR51450 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 21 nov 2022

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

LMR51450EVM — Módulo de evaluación del convertidor reductor síncrono LMR51450

El módulo de evaluación (EVM) LMR51450 está diseñado para ayudar a los clientes a evaluar el rendimiento del convertidor reductor de tensión síncrono LMR51450. Este EVM implementa el LMR51450 en un encapsulado WSON de 12 pines. El EVM es capaz de suministrar una tensión de salida de 5 V o 3.3 V y (...)
Guía del usuario: PDF | HTML
Herramienta de cálculo

LMR51440-CALC LMR51440 calculation tool

Productos y hardware compatibles

Productos y hardware compatibles

Productos
Convertidores de CA/CC y CC/CC (FET integrado)
LMR51440 Convertidor reductor síncrono de 36 V y 4 A
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
WSON (DRR) 12 Ultra Librarian

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

El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.

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