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Controladores de diodo ideal/ORing

LM74700-Q1

ACTIVO

Controlador de diodo ideal con IQ de 3.2 V a 65 V y 80 uA para automoción

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Misma funcionalidad con diferente configuración de pines que el dispositivo comparado
NUEVO LM74700D-Q1 ACTIVO Controlador automotriz de diodo ideal de 3.2 V a 70 V, con 80 uA de protección de batería inversa Newer device with higher absolute maximum rating and SOIC package

LM74700-Q1

ACTIVO
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Detalles del producto

Vin (min) (V) 3.2 Vin (max) (V) 65 Number of channels 1 Features Automotive load dump compatibility, Enable, Linear control, Reverse current blocking, Reverse polarity protection Iq (typ) (mA) 0.08 Iq (max) (mA) 0.13 TI functional safety category Functional Safety-Capable FET External single FET IGate source (typ) (µA) 11000 IGate sink (typ) (mA) 2370 IGate pulsed (typ) (A) 2.3 Operating temperature range (°C) -40 to 125 VSense reverse (typ) (mV) -11 Design support EVM Rating Automotive Imax (A) 250 Shutdown current (ISD) (mA) (A) 0.001 Device type Ideal diode controller Product type Ideal diode controller
Vin (min) (V) 3.2 Vin (max) (V) 65 Number of channels 1 Features Automotive load dump compatibility, Enable, Linear control, Reverse current blocking, Reverse polarity protection Iq (typ) (mA) 0.08 Iq (max) (mA) 0.13 TI functional safety category Functional Safety-Capable FET External single FET IGate source (typ) (µA) 11000 IGate sink (typ) (mA) 2370 IGate pulsed (typ) (A) 2.3 Operating temperature range (°C) -40 to 125 VSense reverse (typ) (mV) -11 Design support EVM Rating Automotive Imax (A) 250 Shutdown current (ISD) (mA) (A) 0.001 Device type Ideal diode controller Product type Ideal diode controller
SOT-23 (DBV) 6 8.12 mm² 2.9 x 2.8 SOT-23-THN (DDF) 8 8.12 mm² 2.9 x 2.8
  • AEC-Q100 qualified with the following results
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature range
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • Functional Safety-Capable
  • 3.2-V to 65-V input range (3.9-V start up)
  • –65-V reverse voltage rating
  • Charge pump for external N-Channel MOSFET
  • 20-mV ANODE to CATHODE forward voltage drop regulation
  • Enable pin feature
  • 1-µA shutdown current (EN=Low)
  • 80-µA operating quiescent current (EN=High)
  • 2.3-A peak gate turnoff current
  • Fast response to reverse current blocking: < 0.75 µs
  • Meets automotive ISO7637 transient requirements with a suitable TVS Diode
  • Available in 6-pin and 8-pin SOT-23 Package 2.90 mm × 1.60 mm
  • AEC-Q100 qualified with the following results
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature range
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • Functional Safety-Capable
  • 3.2-V to 65-V input range (3.9-V start up)
  • –65-V reverse voltage rating
  • Charge pump for external N-Channel MOSFET
  • 20-mV ANODE to CATHODE forward voltage drop regulation
  • Enable pin feature
  • 1-µA shutdown current (EN=Low)
  • 80-µA operating quiescent current (EN=High)
  • 2.3-A peak gate turnoff current
  • Fast response to reverse current blocking: < 0.75 µs
  • Meets automotive ISO7637 transient requirements with a suitable TVS Diode
  • Available in 6-pin and 8-pin SOT-23 Package 2.90 mm × 1.60 mm

The LM74700-Q1 is an automotive AEC Q100 qualified ideal diode controller which operates in conjunction with an external N-channel MOSFET as an ideal diode rectifier for low loss reverse polarity protection with a 20-mV forward voltage drop. The wide supply input range of 3.2 V to 65 V allows control of many popular DC bus voltages such as 12-V, 24-V and 48-V automotive battery systems. The 3.2-V input voltage support is particularly well suited for severe cold crank requirements in automotive systems. The device can withstand and protect the loads from negative supply voltages down to –65 V.

The device controls the GATE of the MOSFET to regulate the forward voltage drop at 20 mV. The regulation scheme enables graceful turn off of the MOSFET during a reverse current event and ensures zero DC reverse current flow. Fast response (< 0.75 µs) to Reverse Current Blocking makes the device suitable for systems with output voltage holdup requirements during ISO7637 pulse testing as well as power fail and input micro-short conditions.

The LM74700-Q1 controller provides a charge pump gate drive for an external N-channel MOSFET. The high voltage rating of LM74700-Q1 helps to simplify the system designs for automotive ISO7637 protection. With the enable pin low, the controller is off and draws approximately 1 µA of current.

The LM74700-Q1 is an automotive AEC Q100 qualified ideal diode controller which operates in conjunction with an external N-channel MOSFET as an ideal diode rectifier for low loss reverse polarity protection with a 20-mV forward voltage drop. The wide supply input range of 3.2 V to 65 V allows control of many popular DC bus voltages such as 12-V, 24-V and 48-V automotive battery systems. The 3.2-V input voltage support is particularly well suited for severe cold crank requirements in automotive systems. The device can withstand and protect the loads from negative supply voltages down to –65 V.

The device controls the GATE of the MOSFET to regulate the forward voltage drop at 20 mV. The regulation scheme enables graceful turn off of the MOSFET during a reverse current event and ensures zero DC reverse current flow. Fast response (< 0.75 µs) to Reverse Current Blocking makes the device suitable for systems with output voltage holdup requirements during ISO7637 pulse testing as well as power fail and input micro-short conditions.

The LM74700-Q1 controller provides a charge pump gate drive for an external N-channel MOSFET. The high voltage rating of LM74700-Q1 helps to simplify the system designs for automotive ISO7637 protection. With the enable pin low, the controller is off and draws approximately 1 µA of current.
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Documentación técnica

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Tipo Título Fecha
* Data sheet LM74700-Q1 Low IQ Reverse Battery Protection Ideal Diode Controller datasheet (Rev. G) PDF | HTML 21 dic 2020
Application brief Full-Featured Automotive Side Mirror PDF | HTML 15 mar 2024
Analog Design Journal Redundant supply topologies for automotive applications using ideal diode controllers PDF | HTML 14 feb 2024
Analog Design Journal Multibattery management in medical ultrasound systems (Rev. B) PDF | HTML 08 jun 2023
Application brief Implementation of Test Pulses in Digital Output Modules PDF | HTML 04 mar 2022
Application note Basics of Ideal Diodes (Rev. B) PDF | HTML 05 oct 2021
Certificate Automotive PPAP Documentation 18 jun 2021
EVM User's guide LM74700DDFEVM: Evaluation Module for LM74700-Q1 PDF | HTML 10 dic 2020
Technical article Meet airline restrictions with power-path control for dual batteries PDF | HTML 21 jul 2020
Functional safety information Streamlining Functional Safety Certification in Automotive and Industrial 09 jun 2020
Functional safety information LM74700-Q1 Functional Safety FIT Rate and Failure Mode Distribution 16 dic 2019
E-book 11 Ways to Protect Your Power Path 03 jul 2019
Application note Basics of Power Switches (Rev. A) PDF | HTML 26 abr 2019
User guide LM74700 Evaluation Module (Rev. A) 11 feb 2019

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

LM74700DDFEVM — Módulo de evaluación LM74700-Q1 de controlador de diodo ideal de 3.2 V a 65 V e IQ de 80 μA para aut

The LM74700DDFEVM helps designers evaluate the operation and performance of the LM74700-Q1 3.2-V to 65-V, 80-μA IQ automotive ideal diode controller (DDF package). This evaluation module demonstrates how an N-channel power MOSFET can emulate a very-low forward voltage diode with low IQ and (...)

Guía del usuario: PDF | HTML
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Placa de evaluación

LM74700EVM — Módulo de evaluación LM74700

The LM74700EVM helps designers evaluate the operation and performance of the LM74700-Q1 smart diode controller. This evaluation module demonstrates how an N-channel power MOSFET can emulate a very-low forward voltage diode with low IQ and low-leakage current flowing through the IC.
Guía del usuario: PDF
No disponible en TI.com
Modelo de simulación

LM74700-Q1 PSpice Transient Model

SNOM667.ZIP (64 KB) - PSpice Model
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Modelo de simulación

LM74700-Q1 TINA-TI Transient Model

SNOM691.TSC (149 KB) - TINA-TI Spice Model
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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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Paquete Pasadores Descargar
SOT-23 (DBV) 6 Ver opciones
SOT-23-THN (DDF) 8 Ver opciones
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Pedidos y calidad

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  • 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
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