LM20154QMHE/NOPB Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
LM20154QMHE/NOPB is an automotive-qualified 4-A synchronous step-down DC-DC converter by Texas Instruments designed for automotive infotainment and ADAS power rails. Key specs: 3 V to 36 V input range, adjustable output, 500 kHz switching frequency, in a small MLP package. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 17
- Lifecycle
- ACTIVE
- Datasheet
- LM20154QMHE/NOPB Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LM20154QMHE/NOPB?
- AEC-Q100 qualified for automotive applications with 3 V to 36 V input range covering 12 V and 24 V vehicle bus transients
- 4 A continuous output current with 500 kHz fixed-frequency operation enabling compact magnetics in automotive ECU designs
- Integrated high-side and low-side MOSFETs in a small MLP package for high-efficiency synchronous buck conversion
What is LM20154QMHE/NOPB used for?
The LM20154QMHE/NOPB is designed for automotive ECU power rails, infotainment systems, and ADAS sensor supplies requiring 4 A from a wide-range 12 V or 24 V vehicle bus. Its AEC-Q100 qualification and 3 V to 36 V input range ensure robust operation across automotive load-dump transients and cold-crank conditions. The synchronous buck topology and 500 kHz switching frequency allow the use of small inductors and capacitors, reducing the overall power-module footprint on tightly spaced automotive PCBs.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the LM20154QMHE/NOPB datasheet?
LM20154QMHE/NOPB Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM20154QMHE/NOPB?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
Why is AEC-Q100 qualification important for selecting LM20154QMHE/NOPB in automotive power designs?
AEC-Q100 qualification means the LM20154QMHE/NOPB has passed automotive-grade stress tests including high-temperature operating life at 125°C, temperature cycling, humidity bias, and electrostatic discharge. Without this qualification, an industrial-grade part may fail prematurely under vehicle-environment thermal cycling, vibration, and voltage transients up to 36 V from load-dump events on a 12 V bus.
How does the 3 V to 36 V input range of the LM20154QMHE/NOPB handle automotive cold-crank and load-dump conditions?
During cold-crank, vehicle battery voltage can sag below 6 V, while load-dump transients can spike above 40 V momentarily. The LM20154QMHE/NOPB's 3 V minimum input ensures the converter continues regulating during crank events, and the 36 V maximum input withstands sustained load-dump transients, protecting downstream 4 A loads such as infotainment processors and ADAS sensor rails without requiring extra clamping components.
For an ADAS sensor supply on a compact automotive PCB, how does the 500 kHz switching frequency affect inductor selection?
At 500 kHz, the required inductance for a buck converter at 4 A output is roughly 4× smaller than at 125 kHz, typically in the range of 2.2 µH to 10 µH depending on the input-output voltage ratio. This allows the use of low-profile inductors in the 2 mm to 4 mm height range, which fit within the tight vertical clearances of automotive PCB assemblies while maintaining acceptable ripple current below 20% of the 4 A rated output.
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Why Buy from FindMyChip
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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