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理想二極體/ORing 控制器

LM74502-Q1

現行

汽車反向極性保護控制器、過電壓保護、閘極驅動強度 60 μA

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產品規格表

LM74502-Q1

現行
產品規格表 立即訂購

產品詳細資料

Vin (min) (V) 3.2 Vin (max) (V) 65 Number of channels 1 Features Enable, Inrush current control, Overvoltage protection, Reverse polarity protection Iq (typ) (mA) 0.06 Iq (max) (mA) 0.11 TI functional safety category Functional Safety-Capable FET External single FET IGate source (typ) (µA) 60 IGate source (max) (µA) 77 IGate sink (typ) (mA) 2370 IGate pulsed (typ) (A) 2.37 Operating temperature range (°C) -40 to 125 IReverse (typ) (µA) 100 Design support EVM Rating Automotive Imax (A) 250 Shutdown current (ISD) (mA) (A) 0.001 Device type Reverse polarity protector Product type Reverse polarity protector
Vin (min) (V) 3.2 Vin (max) (V) 65 Number of channels 1 Features Enable, Inrush current control, Overvoltage protection, Reverse polarity protection Iq (typ) (mA) 0.06 Iq (max) (mA) 0.11 TI functional safety category Functional Safety-Capable FET External single FET IGate source (typ) (µA) 60 IGate source (max) (µA) 77 IGate sink (typ) (mA) 2370 IGate pulsed (typ) (A) 2.37 Operating temperature range (°C) -40 to 125 IReverse (typ) (µA) 100 Design support EVM Rating Automotive Imax (A) 250 Shutdown current (ISD) (mA) (A) 0.001 Device type Reverse polarity protector Product type Reverse polarity protector
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
  • 3.2-V to 65-V input range (3.9-V start-up)
  • –65-V input reverse voltage rating
  • Integrated charge pump to drive
    • External back-to-back N-Channel MOSFETs
    • External high side switch MOSFET
    • External reverse polarity protection MOSFET
  • Gate drive variants
    • LM74502-Q1: 60-µA peak gate drive source capacity
    • LM74502H-Q1: 11-mA peak gate drive source capacity
  • 2-A peak gate sink capacity
  • 1-µA shutdown current (EN/UVLO = Low)
  • 45-µA typical operating quiescent current (EN/UVLO = High)
  • Adjustable overvoltage and undervoltage protection
  • Meets automotive ISO7637 pulse 1 transient requirements with additional TVS diode
  • Available in 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
  • 3.2-V to 65-V input range (3.9-V start-up)
  • –65-V input reverse voltage rating
  • Integrated charge pump to drive
    • External back-to-back N-Channel MOSFETs
    • External high side switch MOSFET
    • External reverse polarity protection MOSFET
  • Gate drive variants
    • LM74502-Q1: 60-µA peak gate drive source capacity
    • LM74502H-Q1: 11-mA peak gate drive source capacity
  • 2-A peak gate sink capacity
  • 1-µA shutdown current (EN/UVLO = Low)
  • 45-µA typical operating quiescent current (EN/UVLO = High)
  • Adjustable overvoltage and undervoltage protection
  • Meets automotive ISO7637 pulse 1 transient requirements with additional TVS diode
  • Available in 8-pin SOT-23 package 2.90 mm × 1.60 mm

The LM74502-Q1, LM74502H-Q1 is an automotive AEC-Q100 qualified controller which operates in conjunction with an external back-to-back connected N-channel MOSFETs as a low loss reverse polarity protection and load disconnect solution. 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 LM74502-Q1, LM74502H-Q1 does not have reverse current blocking and is suitable for input reverse polarity protection of loads that can potentially deliver energy back to the input supply such as automotive body control module motor loads.

The LM74502-Q1 controller provides a charge pump gate drive for an external N-channel MOSFET. The high voltage rating of LM74502-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, thus offering low system current when put into sleep mode. LM74502-Q1 offers programmable overvoltage and undervoltage protection which cuts off the load from the input source in case of these faults.

The LM74502-Q1, LM74502H-Q1 is an automotive AEC-Q100 qualified controller which operates in conjunction with an external back-to-back connected N-channel MOSFETs as a low loss reverse polarity protection and load disconnect solution. 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 LM74502-Q1, LM74502H-Q1 does not have reverse current blocking and is suitable for input reverse polarity protection of loads that can potentially deliver energy back to the input supply such as automotive body control module motor loads.

The LM74502-Q1 controller provides a charge pump gate drive for an external N-channel MOSFET. The high voltage rating of LM74502-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, thus offering low system current when put into sleep mode. LM74502-Q1 offers programmable overvoltage and undervoltage protection which cuts off the load from the input source in case of these faults.
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類型 標題 日期
* Data sheet LM74502-Q1, LM74502H-Q1 Automotive Low IQ Reverse Polarity Protection Controller with Overvoltage Protection datasheet (Rev. A) PDF | HTML 2022年 5月 2日
Functional safety information LM74502-Q1, LM74502H-Q1 Functional Safety FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 2024年 2月 21日
User guide LM74502Q1EVM: Evaluation Module for LM74502-Q1 and LM74502H-Q1 Ideal Diode PDF | HTML 2022年 1月 25日
Certificate LM74502Q1EVM EU RoHS Declaration of Conformity (DoC) 2021年 12月 9日

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LM74502Q1EVM — 適用於理想二極體控制器的 LM74502-Q1 與 LM74502H-Q1 評估模組

LM74502Q1EVM is an evaluation module for evaluating the performance of the ideal  diode controller with switched output, LM74502-Q1 and LM74502H-Q1. The LM74502-Q1 ideal diode controllers drive and control external back-to-back N-channel MOSFETs to emulate an ideal diode rectifier with power (...)

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