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LM74910H-Q1

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Automotive ideal diode with circuit breaker, 200-kHz ACS, UV ,OV protection and SLEEP mode

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Data sheet

LM74910H-Q1

ACTIVE
Data sheet Order now

Product details

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
  • 3V to 65V input range
  • 74V Absolute Maximum Rating for LM74910H-Q1
  • Reverse input protection down to –65V
  • Drives external back-to-back N-Channel MOSFETs in common drain configuration
  • Ideal diode operation with 10.5mV A to C forward voltage drop regulation
  • Low reverse detection threshold (–10.5mV) with fast turn off response (0.5µs)
  • 20mA peak gate (DGATE) turn on current
  • 2.6A peak DGATE turnoff current
  • Adjustable overcurrent and short circuit protection
  • Analog current monitor output with 2% accuracy for LM74910H-Q1
  • Adjustable overvoltage and undervoltage protection
  • SLEEP mode OCP Retry in LM74910H-Q1
  • Low 2.5µA shutdown current (EN=Low)
  • SLEEP mode with 6µA 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
  • 3V to 65V input range
  • 74V Absolute Maximum Rating for LM74910H-Q1
  • Reverse input protection down to –65V
  • Drives external back-to-back N-Channel MOSFETs in common drain configuration
  • Ideal diode operation with 10.5mV A to C forward voltage drop regulation
  • Low reverse detection threshold (–10.5mV) with fast turn off response (0.5µs)
  • 20mA peak gate (DGATE) turn on current
  • 2.6A peak DGATE turnoff current
  • Adjustable overcurrent and short circuit protection
  • Analog current monitor output with 2% accuracy for LM74910H-Q1
  • Adjustable overvoltage and undervoltage protection
  • SLEEP mode OCP Retry in LM74910H-Q1
  • Low 2.5µA shutdown current (EN=Low)
  • SLEEP mode with 6µA 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 3V to 65V allows protection and control of 12V and 24V automotive battery powered ECUs. The device can withstand and protect the loads from negative supply voltages down to –65V. 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 (6µA) 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 65V.

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 3V to 65V allows protection and control of 12V and 24V automotive battery powered ECUs. The device can withstand and protect the loads from negative supply voltages down to –65V. 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 (6µA) 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 65V.
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* Data sheet LM749x0-Q1 Automotive Ideal Diode With Circuit Breaker, Undervoltage, and Overvoltage Protection With Fault Output datasheet (Rev. C) PDF | HTML 12 Aug 2025

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LM74900Q1EVM — LM74900-Q1 evaluation module for ideal diode controller

The LM74900-Q1 evaluation module evaluates the operation and performance of the LM74900-Q1 ideal diode controller in reverse battery protection applications. This evaluation module demonstrates how LM74900-Q1 controls two back-back N-channel power MOSFETs to emulate an ideal diode rectifier with (...)

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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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