LM74721-Q1 Texas Instruments Integrated Circuit (Other) In Stock
The Texas Instruments LM74721-Q1 is an automotive-qualified, TVS-less ideal diode controller with ultra-low quiescent current for reverse battery protection and active rectification. It drives an external N-channel MOSFET to replace diode-based protection with near-zero voltage drop, supporting systems up to 65 V. Available in stock worldwide with competitive pricing and fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 13
- Lifecycle
- ACTIVE
- Datasheet
- LM74721-Q1 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- TVS-less reverse battery protection using an external N-channel MOSFET, eliminating bulky transient voltage suppressors and reducing solution size and cost in automotive designs
- Ultra-low quiescent current (IQ) minimizing standby power drain, critical for automotive always-on systems such as BCMs, keyless entry modules, and telematics units
- AEC-Q100 qualified for automotive applications supporting supply voltages up to 65 V, enabling robust reverse polarity protection across 12 V and 24 V vehicle architectures
Applications
The LM74721-Q1 is designed for automotive power path protection in body control modules, ADAS power rails, telematics units, and infotainment systems where reverse battery connection must be blocked without the cost and size penalty of traditional TVS diodes. Its active rectification capability also makes it suitable for energy harvesting and multi-supply ORing circuits in industrial and automotive 12 V/24 V systems demanding high efficiency and minimal voltage drop.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the LM74721-Q1 and what problem does it solve?
The LM74721-Q1 is an automotive ideal diode controller that replaces conventional schottky diodes and TVS suppressors for reverse battery protection. By driving an external N-channel MOSFET, it achieves near-zero forward voltage drop and eliminates the TVS component, reducing cost and PCB area in automotive power protection circuits.
What supply voltage range does the LM74721-Q1 support?
The LM74721-Q1 supports supply voltage operation up to 65 V, making it compatible with both 12 V and 24 V automotive battery architectures as well as transient conditions that commonly appear on automotive power rails, such as load dumps and cold-crank events.
Is the LM74721-Q1 automotive qualified?
Yes, the LM74721-Q1 is AEC-Q100 qualified (indicated by the -Q1 suffix), meaning it has passed automotive reliability testing for temperature cycling, ESD, and other stress conditions, making it fully suitable for use in safety-relevant and high-reliability vehicle electronic systems.
How does the LM74721-Q1 achieve low quiescent current?
The LM74721-Q1 is designed with an ultra-low IQ architecture that minimizes self-consumption in standby mode, which is critical for always-on automotive modules such as keyless entry, body control modules, and tracking units that must preserve battery charge during long vehicle parked states.
What are typical applications for the LM74721-Q1?
Typical applications include reverse battery protection in automotive body control modules, ADAS power supplies, telematics units, infotainment systems, and industrial multi-supply ORing circuits where a low-loss, TVS-less, high-voltage reverse polarity protection solution is required.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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