PLM74700QDBVTQ1 Texas Instruments Power Supply (SOT23 (6-Pin)) In Stock
The PLM74700QDBVTQ1 is an AEC-Q100 qualified, low quiescent current smart diode controller from Texas Instruments designed for always-on input fault protection in automotive and industrial systems. It drives an external MOSFET to provide low-loss reverse polarity and overvoltage protection, housed in a compact SOT-23 6-pin package.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (6-Pin)
- Pin Count
- 6
- Lifecycle
- OBSOLETE
- Datasheet
- PLM74700QDBVTQ1 Datasheet PDF
- Category
- Power Supply
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of PLM74700QDBVTQ1?
- AEC-Q100 qualified for automotive-grade reliability in harsh environments
- Ultra-low quiescent current ideal for always-on battery-connected systems
- Smart diode controller drives external MOSFET for sub-50 mV forward voltage drop versus discrete Schottky diodes
- Integrated input fault protection against reverse polarity and overvoltage transients
- SOT-23 6-pin package enabling high-density automotive PCB layouts
What is PLM74700QDBVTQ1 used for?
The PLM74700QDBVTQ1 is used in automotive battery management systems and always-on ECU power paths where a low quiescent current smart diode prevents reverse current and protects downstream circuitry during load dump or reverse polarity events. Its AEC-Q100 qualification makes it appropriate for under-hood applications in 12 V automotive systems where ambient temperatures can reach 125°C. The device is also deployed in industrial power supplies and server hot-swap circuits that require continuous input protection with minimal power loss.
What are the specifications of PLM74700QDBVTQ1?
| Date Of Intro | 2017-12-17 |
| YTEOL | 0 |
| Analog IC - Other Type | INPUT FAULT PROTECTION CONTROLLER |
| Screening Level | AEC-Q100 |
| Package | SOT23 (6-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the PLM74700QDBVTQ1 datasheet?
PLM74700QDBVTQ1 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for PLM74700QDBVTQ1?
Compatible alternatives and drop-in replacements for PLM74700QDBVTQ1:
Texas Instruments Fixed, 1 Channel, PDSO6
Frequently Asked Questions
How does the PLM74700QDBVTQ1 reduce power loss compared to a conventional Schottky diode in an always-on automotive rail?
The PLM74700QDBVTQ1 drives an external N-channel MOSFET whose on-resistance can be less than 10 mΩ, yielding a forward voltage drop well below 50 mV at typical currents versus the 0.3 V to 0.5 V drop of a Schottky diode. This reduction is critical in 12 V automotive always-on supplies where millivolt drops accumulate over thousands of hours, directly reducing standby heat dissipation.
What qualification level does the PLM74700QDBVTQ1 carry, and what temperature range does it cover?
The PLM74700QDBVTQ1 is qualified to AEC-Q100 Grade 1, meaning it is tested and specified for operation from -40°C to 125°C ambient. This thermal range covers most automotive under-hood and body-electronics environments where component reliability over the vehicle lifetime is mandatory.
For which fault scenarios does the PLM74700QDBVTQ1 protect downstream circuitry in a 12 V automotive system?
The controller guards against reverse polarity, where a battery is connected backwards delivering -12 V to the input, and against positive overvoltage transients such as 40 V load-dump pulses defined in ISO 16750-2. In both cases it turns off the external MOSFET within microseconds, limiting energy delivered to downstream ICs to safe levels.
What package does the PLM74700QDBVTQ1 use, and how does this affect PCB layout in a compact automotive module?
The PLM74700QDBVTQ1 is packaged in a 6-pin SOT-23 with a body size of approximately 1.6 mm × 2.9 mm, allowing it to fit in tight spaces adjacent to the external MOSFET and a few passive components. The small footprint reduces the protection circuit overhead to under 20 mm², making it practical for compact BCM and telematics modules.
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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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