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LM65645

ACTIVO

Convertidor reductor sincrónico de 3 V a 65 V y 4.5 A optimizado para densidad de potencia y baja EM

Detalles del producto

Rating Catalog Topology Buck Iout (max) (A) 4.5 Vin (max) (V) 65 Vin (min) (V) 3 Vout (max) (V) 40 Vout (min) (V) 0.8 Features Adjustable switching frequency, Auto Mode, Enable, Fixed Output, Forced PWM, Frequency synchronization, Overcurrent protection, Power good, Spread Spectrum, Thermal shutdown, UVLO adjustable EMI features Low parasitic Hotrod packaging, Spread Spectrum Control mode current mode Switching frequency (min) (kHz) 300 Switching frequency (max) (kHz) 2200 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 150 Duty cycle (max) (%) 98 Type Converter
Rating Catalog Topology Buck Iout (max) (A) 4.5 Vin (max) (V) 65 Vin (min) (V) 3 Vout (max) (V) 40 Vout (min) (V) 0.8 Features Adjustable switching frequency, Auto Mode, Enable, Fixed Output, Forced PWM, Frequency synchronization, Overcurrent protection, Power good, Spread Spectrum, Thermal shutdown, UVLO adjustable EMI features Low parasitic Hotrod packaging, Spread Spectrum Control mode current mode Switching frequency (min) (kHz) 300 Switching frequency (max) (kHz) 2200 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 150 Duty cycle (max) (%) 98 Type Converter
WQFN-FCRLF (RZT) 20 9.36 mm² 3.6 x 2.6
  • Wide input voltage range: 3V to 65V (70V transient < 100ms)
    • Meets LV148 / ISO21780 requirements
  • Designed for low EMI requirements
    • Facilitates CISPR 11 class B compliance
    • Mode pin configurable ±5% or ±10% dual-random spread spectrum reducing peak emissions
    • Enhanced HotRod™ QFN package with symmetrical pinout
    • Switching frequency from 300kHz to 2.2MHz
    • Pin-configurable AUTO or FPWM operation
    • Internal compensation, current limit, and TSD
  • Low minimum on time: 40ns (maximum)
    • Enables 36VIN to 3.3VOUT conversion at 2.2MHz
  • High-efficiency power conversion at all loads
    • > 94% peak efficiency at 24VIN, 5VOUT, 400kHz
    • 2.5µA switching input current at no load
  • High power density
    • 3.6mm × 2.6mm, wettable flank, 20-pin package
    • Pin compatible with 36V 4/6/8A LM654x0-Q1
    • ϴJA = 24.0°C/W (LM65645EVM)
  • Create a custom design using the LM656x5 with the WEBENCH Power Designer
  • Wide input voltage range: 3V to 65V (70V transient < 100ms)
    • Meets LV148 / ISO21780 requirements
  • Designed for low EMI requirements
    • Facilitates CISPR 11 class B compliance
    • Mode pin configurable ±5% or ±10% dual-random spread spectrum reducing peak emissions
    • Enhanced HotRod™ QFN package with symmetrical pinout
    • Switching frequency from 300kHz to 2.2MHz
    • Pin-configurable AUTO or FPWM operation
    • Internal compensation, current limit, and TSD
  • Low minimum on time: 40ns (maximum)
    • Enables 36VIN to 3.3VOUT conversion at 2.2MHz
  • High-efficiency power conversion at all loads
    • > 94% peak efficiency at 24VIN, 5VOUT, 400kHz
    • 2.5µA switching input current at no load
  • High power density
    • 3.6mm × 2.6mm, wettable flank, 20-pin package
    • Pin compatible with 36V 4/6/8A LM654x0-Q1
    • ϴJA = 24.0°C/W (LM65645EVM)
  • Create a custom design using the LM656x5 with the WEBENCH Power Designer

The LM656x5 are a family of buck converters designed for high efficiency, high-power density, and ultra-low electromagnetic interference (EMI). The converters operate over a wide input voltage range of 3V to 65V (70V transient < 100ms), reducing the need for external input surge protection. The LM656x5 comes with pin selectable fixed output voltages of 3.3V and 5V or in adjustable configuration. The low EMI operation is enabled with minimized loop inductance and optimized switch node slew rate. A pin-selectable ±5% or ±10% dual-random spread spectrum (DRSS) significantly reduces peak emissions through a combination of triangular and pseudo-random modulation while keeping output voltage ripple very low. The current-mode control architecture with a 30ns typical minimum on-time allows high conversion ratios at high frequencies coupled with a fast transient response and excellent load and line regulation.

The LM656x5 are a family of buck converters designed for high efficiency, high-power density, and ultra-low electromagnetic interference (EMI). The converters operate over a wide input voltage range of 3V to 65V (70V transient < 100ms), reducing the need for external input surge protection. The LM656x5 comes with pin selectable fixed output voltages of 3.3V and 5V or in adjustable configuration. The low EMI operation is enabled with minimized loop inductance and optimized switch node slew rate. A pin-selectable ±5% or ±10% dual-random spread spectrum (DRSS) significantly reduces peak emissions through a combination of triangular and pseudo-random modulation while keeping output voltage ripple very low. The current-mode control architecture with a 30ns typical minimum on-time allows high conversion ratios at high frequencies coupled with a fast transient response and excellent load and line regulation.

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Documentación técnica

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* Data sheet LM656x5 High-Performance, 3V to 65V , Pin Compatible, 2.5A, 3.5A, 4.5A, Industrial , Low EMI, Synchronous Buck Converters datasheet PDF | HTML 11 jun 2025
Certificate LM65645EVM EU Declaration of Conformity (DoC) 09 jul 2024

Diseño y desarrollo

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Placa de evaluación

LM65645EVM — Módulo de evaluación LM65645

El módulo de evaluación (EVM) LM65645 ayuda a los diseñadores a evaluar el funcionamiento y el rendimiento de la familia LM65645 de convertidores buck de tensión de entrada amplia. El LM65645 es una familia de convertidores reductores sincrónicos fáciles de usar capaces de manejar hasta 2.5 A, (...)
Guía del usuario: PDF | HTML
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Pedidos y calidad

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  • 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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