LM5085QMY Texas Instruments In Stock
LM5085QMY is a high-voltage PFET buck controller by Texas Instruments supporting input voltages up to 75 V. Key specs: 75 V maximum input, adjustable output voltage, and 1 MHz maximum switching frequency. From $2.50, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LM5085QMY?
- 75 V maximum input voltage for high-voltage industrial and automotive buck regulation
- External PFET switch for flexible power stage design and high efficiency
- Adjustable output voltage regulation for versatile power supply configurations
- Up to 1 MHz switching frequency reducing inductor and capacitor size
- AEC-Q100 qualified for automotive-grade reliability in harsh environments
- Compact SOT-23-5 package enabling space-efficient high-voltage power modules
What is LM5085QMY used for?
The LM5085QMY is designed for high-voltage step-down (buck) power conversion in automotive electronics, industrial control systems, and 48 V bus architectures where input voltages can reach up to 75 V. Its PFET-based topology and AEC-Q100 automotive qualification make it suitable for battery management, LED lighting drivers, and instrument cluster power supplies in vehicle platforms. Industrial applications such as PLC power rails, field transmitters, and motor drive auxiliary supplies also benefit from its wide input range and adjustable output flexibility.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
What are equivalent replacements for LM5085QMY?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does the LM5085QMY support for high-voltage automotive and industrial buck designs?
The LM5085QMY supports input voltages up to 75 V, making it suitable for 48 V automotive bus architectures, 24 V industrial control systems, and applications with transient spikes well above nominal rail voltages, without requiring an additional high-voltage pre-regulator stage.
How does the external PFET topology of the LM5085QMY benefit high-current power supply designs?
Using an external PFET switch allows designers to select a FET with the appropriate RDS(on) and current rating for the load, enabling output currents of several amperes while keeping conduction losses low and giving flexibility to optimize efficiency across the full input voltage range from low line to 75 V.
Is the LM5085QMY qualified for automotive use, and what temperature range does it cover?
Yes, the LM5085QMY carries AEC-Q100 automotive qualification, indicating it has been tested for the reliability demands of vehicle environments. It operates over a junction temperature range of -40°C to 125°C, covering under-hood automotive conditions and outdoor industrial equipment exposed to wide temperature extremes.
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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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