首頁 電源管理 電源開關 理想二極體/ORing 控制器
首頁
電源管理
電源開關
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

立即訂購
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.
filter 尋找其它 理想二極體/ORing 控制器
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
可直接投入的替代產品，相較於所比較的裝置，具備升級功能
LM74502H-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 11 mA Reverse polarity protection (RPP) controller with 11-mA gate drive strength
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 TVS-less reverse polarity protection (RPP) controller with -18-V RPP threshold

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 4
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

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

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 (...)

使用指南: PDF | HTML
TI.com 無法提供
計算工具

FET-INRUSH-SOA-CALC — FET SOA margin calculator for dvdt based startup

The design calculator allows user to estimate the FET SOA margin while starting up with dVdt based startup for inrush current control
支援產品和硬體

支援產品和硬體

產品
理想二極體/ORing 控制器
LM74502 — 具有負載斷開和 OVP 的 3.2-V 至 65-V 工業 RPP 控制器 LM74502-Q1 — 汽車反向極性保護控制器、過電壓保護、閘極驅動強度 60 μA LM74502H — 具有負載斷開、OVP 及高閘極驅動器的 3.2-V 至 65-V 工業 RPP 控制器 LM74502H-Q1 — 汽車反向極性保護控制器、過電壓保護、閘極驅動強度 11 mA LM74720-Q1 — 具有主動式整流與負載突降保護的車用、低 IQ 理想二極體控制器 LM74721-Q1 — 車用、無 TVS 低 IQ 反向電池保護理想二極體控制器、主動式整流 LM74722-Q1 — 具有 200-khz 主動式整流與負載突降保護的車用、低 IQ 理想二極體控制器 LM7480 — 3-V 至 65-V 背對背 NFET 理想二極體控制器、-55°C 至 125°C LM7480-Q1 — 用於驅動背對背 NFET 的 3V 至 65V、車用理想二極體控制器 LM7481 — 具有高閘極驅動器的 3-V 至 65-V 背對背 NFET 理想二極體控制器、-55°C 至 125°C LM7481-Q1 — 具有主動式整流驅動 B2B NFET 的車用理想二極體控制器
高壓側開關控制器
TPS1200-Q1 — 具有保護與診斷功能的車用 45V 低 IQ 高壓側驅動器 TPS1210-Q1 — Automotive, 45V low-Iq dual high-side driver with short circuit protection and diagnostics TPS1211-Q1 — Automotive, 3.5V to 45V high-side driver with protection and diagnostics TPS1213-Q1 — 具低功率模式和可調整短路保護的車用、45V 低 Iq 高壓側驅動器 TPS1214-Q1 — 具有低 Iq、低功率、負載喚醒、I²t 與診斷功能的車用、高壓側開關控制器 TPS4800-Q1 — 具有保護與診斷功能的車用 100V 低 IQ 高壓側驅動器 TPS4810-Q1 — 具有短路防護與診斷功能的車用 100V 低 IQ 雙高壓側驅動器 TPS4811-Q1 — Automotive, 3.5V to 100V high-side driver with protection and diagnostics TPS4813-Q1 — 具低功耗模式和可調整短路防護的車用 100V 低 IQ 高壓側驅動器
下載
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 (...)
要求
封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOT-23-THN (DDF) 8 Ultra Librarian
適用 TI 的評估品項標準條款與條件。

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

以英文檢視所有論壇主題

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