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AC/DC & DC/DC converters (integrated FET)

LMR51430

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Convertidor reductor síncrono SIMPLE SWITCHER de 4.5 V a 36 V, 3 A con IQ de 40 µA

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LMR51430

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Detalles del producto

Iout (max) (A) 3 Vin (min) (V) 4.5 Vin (max) (V) 36 Topology Buck Type Converter Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 1100 Features Enable, Forced PWM, Light Load Efficiency, Soft Start Fixed Control mode current mode Vout (min) (V) 0.6 Vout (max) (V) 34.2 Rating Catalog Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.00004
Iout (max) (A) 3 Vin (min) (V) 4.5 Vin (max) (V) 36 Topology Buck Type Converter Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 1100 Features Enable, Forced PWM, Light Load Efficiency, Soft Start Fixed Control mode current mode Vout (min) (V) 0.6 Vout (max) (V) 34.2 Rating Catalog Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.00004
SOT-23-THN (DDC) 6 8.12 mm² 2.9 x 2.8
  • Functional Safety-Capable
  • Configured for rugged industrial applications
    • 4.5-V to 36-V input voltage range
    • 3-A continuous output current
    • 70-ns minimum switching on time
    • 500-kHz and 1.1-MHz fixed switching frequency options
    • –40°C to 150°C junction temperature range
    • 98% maximum duty cycle
    • Start-up with prebiased output
    • Internal short circuit protection with hiccup mode
    • ±1.5% tolerance voltage reference
    • Precision enable
  • Small solution size and ease of use
    • Integrated synchronous rectification
    • Internal compensation for ease of use
    • SOT-23 package
  • Pin-to-pin compatible with the TPS54202 and TPS54302
  • PFM and forced PWM (FPWM) options available
  • Create a custom design using the LMR51430 with the WEBENCH Power Designer
  • Functional Safety-Capable
  • Configured for rugged industrial applications
    • 4.5-V to 36-V input voltage range
    • 3-A continuous output current
    • 70-ns minimum switching on time
    • 500-kHz and 1.1-MHz fixed switching frequency options
    • –40°C to 150°C junction temperature range
    • 98% maximum duty cycle
    • Start-up with prebiased output
    • Internal short circuit protection with hiccup mode
    • ±1.5% tolerance voltage reference
    • Precision enable
  • Small solution size and ease of use
    • Integrated synchronous rectification
    • Internal compensation for ease of use
    • SOT-23 package
  • Pin-to-pin compatible with the TPS54202 and TPS54302
  • PFM and forced PWM (FPWM) options available
  • Create a custom design using the LMR51430 with the WEBENCH Power Designer

The LMR51430 is a wide-VIN, easy-to-use SIMPLE SWITCHER power converter synchronous buck converter capable of driving up to 3-A load current. With a wide input range of 4.5 V to 36 V, the device is suitable for a wide range of industrial applications for power conditioning from an unregulated source.

The LMR51430 operates at 500-kHz and 1.1-MHz switching frequency to support use of relatively small inductors for an optimized solution size. The device has a 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 LMR51430 is available in a 6-pin SOT-23 package.

The LMR51430 is a wide-VIN, easy-to-use SIMPLE SWITCHER power converter synchronous buck converter capable of driving up to 3-A load current. With a wide input range of 4.5 V to 36 V, the device is suitable for a wide range of industrial applications for power conditioning from an unregulated source.

The LMR51430 operates at 500-kHz and 1.1-MHz switching frequency to support use of relatively small inductors for an optimized solution size. The device has a 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 LMR51430 is available in a 6-pin SOT-23 package.
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Documentación técnica

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* Data sheet LMR51430 SIMPLE SWITCHER® Power Converter 4.5-V to 36-V, 3-A, Synchronous Buck Converter in a SOT-23 Package datasheet (Rev. A) PDF | HTML 23 nov 2022
User guide LMR51430 Buck Regulator Evaluation Module User's Guide PDF | HTML 07 abr 2022
Certificate LMR51430EVM EU RoHS Declaration of Conformity (DoC) 09 mar 2022
Functional safety information LMR514x0 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 15 oct 2021

Diseño y desarrollo

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Placa de evaluación

LMR51430EVM — Módulo de evaluación LMR51430 de convertidor reductor síncrono de 4.5 V a 36 V, 3 A

El módulo de evaluación (EVM) LMR51430EVM es un circuito completamente ensamblado y probado para que los diseñadores evalúen el funcionamiento y el rendimiento del convertidor reductor síncrono LMR51430 de 4.5 V a 36 V y 3 A. La placa tiene un conector puente para habilitar el pin. Este EVM tiene (...)

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SOT-23-THN (DDC) 6 Ver opciones
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Pedidos y calidad

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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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