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)
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LMR66430-EP

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Convertidor reductor síncrono de 36 V y 3 A con IQ de 1.5 μA y baja EMI de producto mejor

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LMR66430-EP

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Detalles del producto

Rating Catalog Operating temperature range (°C) -55 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 3 Vin (max) (V) 36 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Features Enable, Fixed Output, Forced PWM, Frequency synchronization, Light Load Efficiency, Low Noise, Over Current Protection, Power good, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, UVLO adjustable, Wettable flanks package EMI features Low parasitic Hotrod packaging, Spread Spectrum Control mode current mode Vout (min) (V) 1 Vout (max) (V) 35 Iq (typ) (µA) 1.5 Duty cycle (max) (%) 98
Rating Catalog Operating temperature range (°C) -55 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 3 Vin (max) (V) 36 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Features Enable, Fixed Output, Forced PWM, Frequency synchronization, Light Load Efficiency, Low Noise, Over Current Protection, Power good, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, UVLO adjustable, Wettable flanks package EMI features Low parasitic Hotrod packaging, Spread Spectrum Control mode current mode Vout (min) (V) 1 Vout (max) (V) 35 Iq (typ) (µA) 1.5 Duty cycle (max) (%) 98
VQFN-FCRLF (RXB) 14 6.76 mm² 2.6 x 2.6
  • Wide input voltage range
    • 3.35V to 36V rising edge
    • 2.7V to 36V falling edge
    • 42V absolute maximum
  • Integrated 132mΩ and 75mΩ MOSFETs
  • Optimized for low EMI requirements:
    • Dual Random Spread Spectrum reduces peak emissions
    • Pin selectable FPWM mode for constant frequency at light loads and FSW synchronization with MODE/SYNC pin
    • Adjustable FSW: 200kHz – 2.2MHz with RT pin
  • Miniature design size and low component cost:
    • 2.6mm × 2.6mm enhanced HotRod™ QFN package with wettable flanks and internal lead free solder
    • Internal control loop compensation
  • Wide input voltage range
    • 3.35V to 36V rising edge
    • 2.7V to 36V falling edge
    • 42V absolute maximum
  • Integrated 132mΩ and 75mΩ MOSFETs
  • Optimized for low EMI requirements:
    • Dual Random Spread Spectrum reduces peak emissions
    • Pin selectable FPWM mode for constant frequency at light loads and FSW synchronization with MODE/SYNC pin
    • Adjustable FSW: 200kHz – 2.2MHz with RT pin
  • Miniature design size and low component cost:
    • 2.6mm × 2.6mm enhanced HotRod™ QFN package with wettable flanks and internal lead free solder
    • Internal control loop compensation

The LMR66430-EP is a small 36V, 3A, synchronous step-down DC/DC converter with an enhanced HotRod QFN package. This easy-to-use converter supports a wide input voltage range of 2.7V to 36V (after start-up or after operating) with transients up to 42V.

The LMR66430-EP is specifically designed to meet low standby power requirements for always-on, applications. Auto mode enables frequency foldback when operating at light loads, allowing high light load efficiency. A seamless transition between pulse width modulation (PWM) and pulse frequency modulation (PFM) modes along with very low MOSFET ON resistances makes sure there is exceptional efficiency across the entire load range. The control architecture (peak current mode) and feature set are an excellent choice for an ultra-small design size with minimal output capacitance. The device minimizes input filter size by using dual-random spread spectrum (DRSS), a low-EMI enhanced HotRod QFN package, and an optimized pinout. The MODE/SYNC and RT pin variants can be used to set or synchronize the frequency to avoid noise sensitive frequency bands. There are NC pins between critical high voltage pins, reducing potential short circuits between pins. The rich feature set of the LMR66430-EP is designed to simplify implementation for a wide range of industrial end equipment.

The LMR66430-EP is a small 36V, 3A, synchronous step-down DC/DC converter with an enhanced HotRod QFN package. This easy-to-use converter supports a wide input voltage range of 2.7V to 36V (after start-up or after operating) with transients up to 42V.

The LMR66430-EP is specifically designed to meet low standby power requirements for always-on, applications. Auto mode enables frequency foldback when operating at light loads, allowing high light load efficiency. A seamless transition between pulse width modulation (PWM) and pulse frequency modulation (PFM) modes along with very low MOSFET ON resistances makes sure there is exceptional efficiency across the entire load range. The control architecture (peak current mode) and feature set are an excellent choice for an ultra-small design size with minimal output capacitance. The device minimizes input filter size by using dual-random spread spectrum (DRSS), a low-EMI enhanced HotRod QFN package, and an optimized pinout. The MODE/SYNC and RT pin variants can be used to set or synchronize the frequency to avoid noise sensitive frequency bands. There are NC pins between critical high voltage pins, reducing potential short circuits between pins. The rich feature set of the LMR66430-EP is designed to simplify implementation for a wide range of industrial end equipment.
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Documentación técnica

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* Data sheet LMR66430-EP 36V, 3A, Ultra-Small, Synchronous Step-Down Converter datasheet 12 sep 2024
* Radiation & reliability report LMR66430-EP Enhanced Product Qualification and Reliability Report PDF | HTML 27 sep 2024

Diseño y desarrollo

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Placa de evaluación

LMQ66430-2EVM — Módulo de evaluación LMQ66430 para convertidor reductor síncrono de 36 V y 3 A con HotRod™ QFN mejor

El módulo de evaluación (EVM) LMQ66430-2EVM ayuda a los diseñadores a evaluar el funcionamiento y el rendimiento del dispositivo LMQ66430-Q1, un convertidor CC/CC reductor síncrono capaz de conducir hasta 3 A de corriente de carga a partir de una tensión de entrada de hasta 36 V. El LMQ66430-Q1 (...)

Guía del usuario: PDF | HTML
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Modelo de simulación

LMR66430-EP/LMQ66430-Q1 Unencrypted PSpice Model

SNVMCE5.ZIP (254 KB) - PSpice Model
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VQFN-FCRLF (RXB) 14 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

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