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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LM704A0-Q1

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Convertidor reductor síncrono CC/CC de baja EMI, entrada de 4.5 V a 45 V y 10 A, de alta densidad y

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LM704A0-Q1

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Detalles del producto

Rating Automotive Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 10 Vin (min) (V) 4.5 Vin (max) (V) 45 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Features Adjustable switching frequency, Auto Mode, Automotive load dump, Enable, Fixed Output, Forced PWM, Frequency synchronization, Low Noise, Over Current Protection, Power good, Soft Start Fixed, Stackable, Thermal shutdown, UVLO adjustable EMI features Spread Spectrum Control mode Current Vout (min) (V) 0.8 Vout (max) (V) 36 Iq (typ) (µA) 6.5 Duty cycle (max) (%) 99
Rating Automotive Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 10 Vin (min) (V) 4.5 Vin (max) (V) 45 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Features Adjustable switching frequency, Auto Mode, Automotive load dump, Enable, Fixed Output, Forced PWM, Frequency synchronization, Low Noise, Over Current Protection, Power good, Soft Start Fixed, Stackable, Thermal shutdown, UVLO adjustable EMI features Spread Spectrum Control mode Current Vout (min) (V) 0.8 Vout (max) (V) 36 Iq (typ) (µA) 6.5 Duty cycle (max) (%) 99
VQFN (RRX) 29 36 mm² 6 x 6
  • AEC-Q100 qualified for automotive applications:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Functional Safety-Capable
  • Synchronous DC/DC converter with a versatile buck controller and robust power MOSFETs
    • Wide input voltage range: 4.5V to 45V
    • Shutdown mode current: 2.3µA
    • No-load IQ regulating 12V to 5V: 15.5µA
    • 1% accurate, fixed 3.3V, 5V, 12V, or adjustable outputs from 0.8V to 36V
    • Dual-phase operation enabling output currents up to 16A
  • Designed for low EMI requirements
    • Facilitates CISPR 25 Class 5 compliance
    • Pin-selectable ±8% dual-random spread spectrum reduces peak emissions
    • Switching frequency: 200kHz to 2.2MHz
    • Pin-configurable AUTO or FPWM operation
  • Inherent protection features for robust design
    • Internal hiccup-mode overcurrent protection
    • Enable, power good, and thermal shutdown
    • Internal or external loop compensation
  • 6mm × 6mm thermally optimized, RoHS compliant, QFN-29 package with Pb-free plating
  • Create a custom design using the LM704A0-Q1 with the WEBENCH Power Designer
  • AEC-Q100 qualified for automotive applications:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Functional Safety-Capable
  • Synchronous DC/DC converter with a versatile buck controller and robust power MOSFETs
    • Wide input voltage range: 4.5V to 45V
    • Shutdown mode current: 2.3µA
    • No-load IQ regulating 12V to 5V: 15.5µA
    • 1% accurate, fixed 3.3V, 5V, 12V, or adjustable outputs from 0.8V to 36V
    • Dual-phase operation enabling output currents up to 16A
  • Designed for low EMI requirements
    • Facilitates CISPR 25 Class 5 compliance
    • Pin-selectable ±8% dual-random spread spectrum reduces peak emissions
    • Switching frequency: 200kHz to 2.2MHz
    • Pin-configurable AUTO or FPWM operation
  • Inherent protection features for robust design
    • Internal hiccup-mode overcurrent protection
    • Enable, power good, and thermal shutdown
    • Internal or external loop compensation
  • 6mm × 6mm thermally optimized, RoHS compliant, QFN-29 package with Pb-free plating
  • Create a custom design using the LM704A0-Q1 with the WEBENCH Power Designer

The LM704A0-Q1 is a low-IQ, wide-VIN synchronous buck converter designed for an input voltage range of 4.5V to 45V and delivering up to 10A of output current at fixed output voltages of 3.3V, 5V, 12V, or an adjustable output.

The LM704A0-Q1 uses a peak current-mode control architecture for easy loop compensation, fast transient response, and excellent load and line regulation. A pair of LM704A0-Q1 converters can be set up in an interleaved mode (paralleled outputs) with accurate current sharing for applications requiring up to 20A of output current.

The LM704A0-Q1 features a unique Dual Random Spread Spectrum (DRSS) function that combines low-frequency triangular and high-frequency cycle-by-cycle random modulations for improved EMI performance across a wide range of frequency bands.

Additional features of the LM704A0-Q1 include user-selectable diode emulation for lower current consumption at light-load conditions, open-drain Power-Good flag for fault reporting and output monitoring, precision enable input, monotonic start-up into prebiased load, integrated VCC bias supply regulator, internal 2.8ms soft-start time, and thermal shutdown protection with automatic recovery.

The LM704A0-Q1 converter comes in a 6mm × 6mm thermally-optimized, 29-pin QFN package. The three die-attach pads (VIN, SW, and PGND) improve thermal performance and board level reliability (BLR).

The LM704A0-Q1 is a low-IQ, wide-VIN synchronous buck converter designed for an input voltage range of 4.5V to 45V and delivering up to 10A of output current at fixed output voltages of 3.3V, 5V, 12V, or an adjustable output.

The LM704A0-Q1 uses a peak current-mode control architecture for easy loop compensation, fast transient response, and excellent load and line regulation. A pair of LM704A0-Q1 converters can be set up in an interleaved mode (paralleled outputs) with accurate current sharing for applications requiring up to 20A of output current.

The LM704A0-Q1 features a unique Dual Random Spread Spectrum (DRSS) function that combines low-frequency triangular and high-frequency cycle-by-cycle random modulations for improved EMI performance across a wide range of frequency bands.

Additional features of the LM704A0-Q1 include user-selectable diode emulation for lower current consumption at light-load conditions, open-drain Power-Good flag for fault reporting and output monitoring, precision enable input, monotonic start-up into prebiased load, integrated VCC bias supply regulator, internal 2.8ms soft-start time, and thermal shutdown protection with automatic recovery.

The LM704A0-Q1 converter comes in a 6mm × 6mm thermally-optimized, 29-pin QFN package. The three die-attach pads (VIN, SW, and PGND) improve thermal performance and board level reliability (BLR).
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Documentación técnica

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* Data sheet LM704A0-Q1 45V, 10A, Automotive, High-Efficiency Buck Converter Designed for High Power Density datasheet PDF | HTML 18 sep 2024
Functional safety information LM704A0-Q1 Functional Safety FIT Rate, FMD, and Pin FMA PDF | HTML 07 oct 2024

Diseño y desarrollo

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Placa de evaluación

LM706A0QEVM — Módulo de evaluación LM706A0-Q1

El módulo de evaluación (EVM) de alta densidad LM706A0-Q1 está diseñado para usar un carril de entrada de alta tensión regulado o no regulado de 8 V a 65 V para producir una tensión de salida estrictamente regulada de 3.3 V en corrientes de carga de hasta 10 A. Esta solución CC/CC de amplio rango (...)

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Modelo de simulación

LM70880-Q1 PSpice Transient model (Rev. A)

SNVMCD7A.ZIP (3292 KB) - PSpice Model
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Herramienta de cálculo

LM70XX0-CALC — LM70XX0 quickstart design tool calculator

Quickstart calculator for LM70XX0
Productos y hardware compatibles

Productos y hardware compatibles

Productos
Convertidores de CA/CC y CC/CC (FET integrado)
LM704A0-Q1 — Convertidor reductor síncrono CC/CC de baja EMI, entrada de 4.5 V a 45 V y 10 A, de alta densidad y LM70660 — Convertidor reductor síncrono CC/CC de baja interferencia electromagnética (EMI), entrada de 4.5 V a LM706A0 — Convertidor reductor síncrono CC/CC de baja interferencia electromagnética (EMI), entrada de 4.5 V a LM706A0-Q1 — Convertidor reductor síncrono CC/CC de baja EMI, entrada de 4.5 V a 65 V y 10 A, de alta densidad y LM70840 — Convertidor reductor síncrono CC/CC de baja interferencia electromagnética (EMI), entrada de 4.5 V a LM70840-Q1 — Convertidor reductor síncrono CC/CC de baja interferencia electromagnética (EMI), entrada de 4.5 V a LM70860 — Convertidor reductor síncrono CC/CC de baja interferencia electromagnética (EMI), entrada de 4.5 V a LM70860-Q1 — Convertidor reductor síncrono CC/CC de baja interferencia electromagnética (EMI), entrada de 4.5 V a LM70880 — Convertidor reductor síncrono CC/CC de baja interferencia electromagnética (EMI), entrada de 4.5 V a LM70880-Q1 — Convertidor reductor síncrono CC/CC de baja EMI, entrada de 4.5 V a 80 V y 8 A, de alta densidad par
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Herramienta de simulación

PSPICE-FOR-TI — PSpice® para herramienta de diseño y simulación de TI

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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VQFN (RRX) 29 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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