首頁 電源管理 電源開關 理想二極體/ORing 控制器

LM74500-Q1

現行

反向極性保護控制器

產品詳細資料

Vin (min) (V) 3.2 Vin (max) (V) 65 Number of channels 1 Features Automotive load dump compatibility, Enable, 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 pulsed (typ) (A) 2.3 Operating temperature range (°C) -40 to 125 VSense reverse (typ) (mV) 65 Design support EVM, Simulation Model 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 Automotive load dump compatibility, Enable, 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 pulsed (typ) (A) 2.3 Operating temperature range (°C) -40 to 125 VSense reverse (typ) (mV) 65 Design support EVM, Simulation Model 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
  • Charge pump for external N-Channel MOSFET
  • Enable pin feature
  • 1-µA shutdown current (EN=Low)
  • 80-µA typical operating quiescent current (EN=High)
  • 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
  • Charge pump for external N-Channel MOSFET
  • Enable pin feature
  • 1-µA shutdown current (EN=Low)
  • 80-µA typical operating quiescent current (EN=High)
  • 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 LM74500-Q1 is an automotive AEC Q100 qualified controller which operates in conjunction with an external N-channel MOSFET as a low loss reverse polarity protection 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 LM74500-Q1 does not have reverse current blocking and is suitable for input reverse poalrity protection of loads that can potentially deliver energy back to the input supply such as automotive body control module motor loads.

The LM74500-Q1 controller provides a charge pump gate drive for an external N-channel MOSFET. The high voltage rating of LM74500-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.

The LM74500-Q1 is an automotive AEC Q100 qualified controller which operates in conjunction with an external N-channel MOSFET as a low loss reverse polarity protection 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 LM74500-Q1 does not have reverse current blocking and is suitable for input reverse poalrity protection of loads that can potentially deliver energy back to the input supply such as automotive body control module motor loads.

The LM74500-Q1 controller provides a charge pump gate drive for an external N-channel MOSFET. The high voltage rating of LM74500-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.

下載 觀看有字幕稿的影片 影片

您可能會感興趣的類似產品

open-in-new 比較替代產品
功能相同,但引腳輸出與所比較的裝置不同
LM74501-Q1 現行 具整合式 VDS 箝位的車用 3.2-V 至 65-V 反向極性保護控制器 Input TVSless reverse polarity protection controller improving system size and cost
功能與所比較的裝置相似
LM74700-Q1 現行 3.2-V 至 65-V、80-uA IQ 車用理想二極體控制器 3.2-V to 65-V, 80-µA IQ automotive ideal diode controller supporting reverse polarity and reverse current protection
LM7480-Q1 現行 用於驅動背對背 NFET 的 3V 至 65V、車用理想二極體控制器 3-V to 65-V, automotive ideal diode controller driving back to back NFETs supporting reverse polarity, reverse current and over-voltage protection

技術文件

star =TI 所選的此產品重要文件
找不到結果。請清除您的搜尋條件,然後再試一次。
檢視所有 8
類型 標題 日期
* Data sheet LM74500-Q1 Reverse Polarity Protection Controller datasheet PDF | HTML 2020年 12月 23日
Functional safety information LM74500-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 2024年 1月 18日
Application note Basics of Ideal Diodes (Rev. B) PDF | HTML 2021年 10月 5日
User guide LM74500-Q1 Evaluation Module PDF | HTML 2020年 12月 10日
Certificate LM74500Q1EVM EU RoHS Declaration of Conformity (DoC) 2020年 12月 3日
White paper 簡化汽車及工業領域的功 能安全認證 2020年 6月 9日
E-book 11 Ways to Protect Your Power Path 2019年 7月 3日
Application note Basics of Power Switches (Rev. A) PDF | HTML 2019年 4月 26日

設計與開發

如需其他條款或必要資源,請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

LM74500Q1EVM — LM74500-Q1 3.2-V 至 65V、80-μA IQ 反向極性保護控制器評估模組

The LM74500-Q1 evaluation module (LM74500Q1EVM) helps designers evaluate the operation and performance of the LM74500-Q1 reverse polarity protection controller. This evaluation module demonstrates how an N-channel power MOSFET can be used to realize input reverse voltage protection with low IQ (...)

使用指南: PDF | HTML
TI.com 無法提供
開發板

LM74700DDFEVM — LM74700-Q1 3.2-V 至 65-V、80-μA IQ 車用理想二極體控制器 (DDF 封裝) 評估模組

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 (...)

使用指南: PDF | HTML
TI.com 無法提供
模擬型號

LM74500-Q1 PSpice Transient Model

SNOM705.ZIP (73 KB) - PSpice Model
模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

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 (...)
封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOT-23-THN (DDF) 8 Ultra Librarian

訂購與品質

內含資訊:
  • RoHS
  • REACH
  • 產品標記
  • 鉛塗層/球物料
  • MSL 等級/回焊峰值
  • MTBF/FIT 估算值
  • 材料內容
  • 認證摘要
  • 進行中持續性的可靠性監測
內含資訊:
  • 晶圓廠位置
  • 組裝地點

建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

內容係由 TI 和社群貢獻者依「現狀」提供,且不構成 TI 規範。檢視使用條款

若有關於品質、封裝或訂購 TI 產品的問題,請參閱 TI 支援。​​​​​​​​​​​​​​

影片