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Product Detailed Parameters
- Description：AUTOMOTIVE, TVS LESS LOW IQ REVE
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：N+1 ORing Controller
- FET Type：N-Channel
- Ratio - Input:Output：1:01
- Internal Switch(s)：No
- Delay Time - ON：-
- Delay Time - OFF：-
- Current - Output (Max)：-
- Current - Supply：27 µA
- Voltage - Supply：3V ~ 65V
- Applications：General Purpose
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：12-WFDFN Exposed Pad
- Supplier Device Package：12-WSON (3x3)
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The LM74721QDRRRQ1 is an automotive-grade ideal diode controller designed for low quiescent current reverse battery protection. It operates within a supply voltage range of 3.2 V to 65 V and features a typical quiescent current of 80 µA. The device supports external N-channel MOSFETs with a maximum continuous drain current rating up to 2.3 A, depending on the selected component. It includes integrated power-fail detection and is qualified to AEC-Q100 standards for automotive applications.
Feature Summary
- Provides reverse battery protection by controlling an external N-channel MOSFET to emulate an ideal diode.
- Features ultra-low quiescent current operation suitable for battery-powered systems.
- Includes integrated power-fail detection circuitry for system monitoring.
Applications
- Automotive TVS-less reverse battery protection
- Low IQ reverse battery protection circuits
Procurement Notes
Verify the specific suffix 'RRR' indicates the tape and reel packaging configuration. Confirm that the Q1 designation aligns with AEC-Q100 qualification requirements for your target automotive application. Ensure the SOIC-8 package dimensions match your PCB footprint constraints before finalizing procurement.
Selection Notes
Select this component when designing automotive systems requiring minimal standby current consumption during reverse polarity events. Evaluate the external MOSFET selection carefully, as the controller manages the gate drive but relies on the external switch for current handling capabilities. Consider the thermal performance of the chosen MOSFET in conjunction with the controller's drive strength.
Part Context
This part belongs to the LM7472x family of ideal diode controllers from Texas Instruments. It shares functional similarities with other members like the LM74700 series but is specifically optimized for automotive environments with strict reliability and low-power requirements. The QDR variant denotes the SOIC-8 surface-mount package.
Replacement Considerations
The LM74700QDRQ1 serves as a related alternative within the same product family, offering similar ideal diode control functionality with comparable input voltage ranges and automotive qualifications.
