Inicio Gestión de la energía Interruptores de potencia Controladores de diodo ideal/ORing

LM74910-Q1

ACTIVO

Diodo con disyuntor, ACS de 200 kHz y protección contra sobretensión y subtensión ideal para automoc

Detalles del producto

Vin (min) (V) 3 Vin (max) (V) 65 Number of channels 1 Features Adjustable current limit, Analog current monitor, Overvoltage protection, Reverse current blocking, Reverse polarity protection, Short circuit protection Iq (typ) (mA) 0.63 TI functional safety category Functional Safety-Capable FET External back-to-back FET IGate source (typ) (µA) 18500 IGate sink (typ) (mA) 2670 Operating temperature range (°C) -40 to 125 Rating Automotive Shutdown current (ISD) (mA) (A) 0.00287 Device type Ideal diode controller Product type Ideal diode controller
Vin (min) (V) 3 Vin (max) (V) 65 Number of channels 1 Features Adjustable current limit, Analog current monitor, Overvoltage protection, Reverse current blocking, Reverse polarity protection, Short circuit protection Iq (typ) (mA) 0.63 TI functional safety category Functional Safety-Capable FET External back-to-back FET IGate source (typ) (µA) 18500 IGate sink (typ) (mA) 2670 Operating temperature range (°C) -40 to 125 Rating Automotive Shutdown current (ISD) (mA) (A) 0.00287 Device type Ideal diode controller Product type Ideal diode controller
VQFN (RGE) 24 16 mm² 4 x 4
  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature range
  • Functional Safety-Capable
  • 3-V to 65-V input range
  • Reverse input protection down to –65 V
  • Drives external back-to-back N-Channel MOSFETs in common drain configuration
  • Ideal diode operation with 10.5-mV A to C forward voltage drop regulation
  • Low reverse detection threshold (–10.5 mV) with fast turn off response (0.5 µs)
  • 20-mA peak gate (DGATE) turn on current
  • 2.6-A peak DGATE turnoff current
  • Adjustable overcurrent and short circuit protection
  • Analog current monitor output with 10% accuracy (IMON)
  • Adjustable overvoltage and undervoltage protection
  • Low 2.5-µA shutdown current (EN=Low)
  • SLEEP mode with 6-µA current (EN=High, SLEEP=Low)
  • Meets automotive ISO7637 transient requirements with a suitable TVS diode
  • Available in space saving 24-Pin VQFN package
  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature range
  • Functional Safety-Capable
  • 3-V to 65-V input range
  • Reverse input protection down to –65 V
  • Drives external back-to-back N-Channel MOSFETs in common drain configuration
  • Ideal diode operation with 10.5-mV A to C forward voltage drop regulation
  • Low reverse detection threshold (–10.5 mV) with fast turn off response (0.5 µs)
  • 20-mA peak gate (DGATE) turn on current
  • 2.6-A peak DGATE turnoff current
  • Adjustable overcurrent and short circuit protection
  • Analog current monitor output with 10% accuracy (IMON)
  • Adjustable overvoltage and undervoltage protection
  • Low 2.5-µA shutdown current (EN=Low)
  • SLEEP mode with 6-µA current (EN=High, SLEEP=Low)
  • Meets automotive ISO7637 transient requirements with a suitable TVS diode
  • Available in space saving 24-Pin VQFN package

The LM749x0-Q1 ideal diode controller drives and controls external back to back N-Channel MOSFETs to emulate an ideal diode rectifier with power path ON/OFF control with overcurrent and overvoltage protection. The wide input supply of 3 V to 65 V allows protection and control of 12-V and 24-V automotive battery powered ECUs. The device can withstand and protect the loads from negative supply voltages down to –65 V. An integrated ideal diode controller (DGATE) drives the first MOSFET to replace a Schottky diode for reverse input protection and output voltage holdup. With a second MOSFET in the power path the device allows load disconnect (ON/OFF control) in case of overcurrent and overvoltage events using HGATE control. The device has integrated current sense amplifier which provides accurate current monitoring with adjustable overcurrent and short circuit thresholds. The device features an adjustable overvoltage cut-off protection feature. The device features a SLEEP mode which enables ultra-low quiescent current consumption (6 µA) and at the same time providing refresh current to the always ON loads when vehicle is in the parking state. The LM749x0-Q1 has a maximum voltage rating of 65 V.

The LM749x0-Q1 ideal diode controller drives and controls external back to back N-Channel MOSFETs to emulate an ideal diode rectifier with power path ON/OFF control with overcurrent and overvoltage protection. The wide input supply of 3 V to 65 V allows protection and control of 12-V and 24-V automotive battery powered ECUs. The device can withstand and protect the loads from negative supply voltages down to –65 V. An integrated ideal diode controller (DGATE) drives the first MOSFET to replace a Schottky diode for reverse input protection and output voltage holdup. With a second MOSFET in the power path the device allows load disconnect (ON/OFF control) in case of overcurrent and overvoltage events using HGATE control. The device has integrated current sense amplifier which provides accurate current monitoring with adjustable overcurrent and short circuit thresholds. The device features an adjustable overvoltage cut-off protection feature. The device features a SLEEP mode which enables ultra-low quiescent current consumption (6 µA) and at the same time providing refresh current to the always ON loads when vehicle is in the parking state. The LM749x0-Q1 has a maximum voltage rating of 65 V.

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Documentación técnica

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* Data sheet LM749x0-Q1 Automotive Ideal Diode With Circuit Breaker, Undervoltage, and Overvoltage Protection With Fault Output datasheet (Rev. B) PDF | HTML 18 jul 2023
Test report Power Delivery Reference Design for AMD Versal™ AI Edge Series PDF | HTML 25 mar 2024
Functional safety information LM749x0-Q1 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 29 feb 2024
Application note Power Supply Design for AMD Versal™ AI Edge Series PDF | HTML 29 ene 2024
Application note Addressing Automotive Reverse Battery Protection Topologies with LM749x0-Q1 PDF | HTML 13 jun 2023

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

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Guía del usuario: PDF | HTML
Modelo de simulación

LM74910-Q1 PSpice Transient Model

SNOM778.ZIP (114 KB) - PSpice Model
Herramienta de cálculo

LM749X0-CALC Design calculator for LM74900-Q1 and LM74910-Q1 devices

The design calculator allows user to size the external peripheral components while designing with LM74900-Q1 and LM74910-Q1 Devices
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Herramienta de simulación

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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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