LM46002-Q1 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
LM46002-Q1 is an automotive-grade synchronous buck converter accepting 3.5 V to 60 V input and supplying up to 2 A output current, suitable for 12 V and 24 V vehicle bus systems. It integrates high-side and low-side MOSFETs in a compact small-outline package for efficient step-down power conversion. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 17
- Lifecycle
- ACTIVE
- Datasheet
- LM46002-Q1 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LM46002-Q1?
- Wide 3.5 V to 60 V input voltage range covers automotive 12 V and 24 V battery buses including load-dump transients up to 60 V without external clamping
- 2 A continuous output current with integrated synchronous MOSFETs delivers high efficiency and reduces external component count in automotive ECU power trees
- AEC-Q100 automotive qualification ensures reliability across harsh under-hood temperature and EMI conditions demanded by Tier-1 automotive supply chains
- Adjustable switching frequency and spread-spectrum capability minimize EMI to ease CISPR 25 compliance for in-vehicle infotainment and ADAS supply rails
What is LM46002-Q1 used for?
The LM46002-Q1 is designed for automotive applications that require step-down regulation from a 12 V or 24 V vehicle battery bus down to 3.3 V, 5 V, or other logic supply rails at up to 2 A. It is used in body control modules, ADAS sensor power supplies, infotainment systems, and telematics units where the 3.5 V to 60 V input tolerance must survive load-dump events without additional protection circuits. Its AEC-Q100 qualification also makes it a reliable choice for electric vehicle auxiliary power modules and industrial 48 V systems requiring a compact, high-efficiency synchronous buck solution.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the LM46002-Q1 datasheet?
LM46002-Q1 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM46002-Q1?
Compatible alternatives and drop-in replacements for LM46002-Q1:
Switching Regulator, Current-mode, 2A, 2200kHz Switching Freq-Max, PDSO16
Switching Regulator, Current-mode, 2A, 2200kHz Switching Freq-Max, PDSO16
Switching Regulator, Current-mode, 2A, 2200kHz Switching Freq-Max, BICMOS, PDSO16
Switching Regulator, Current-mode, 2A, 2200kHz Switching Freq-Max, BICMOS, PDSO16
Switching Regulator, Current-mode, 2A, 2200kHz Switching Freq-Max, BICMOS, PDSO16
Frequently Asked Questions
What input voltage range does the LM46002-Q1 support, and can it survive automotive load-dump conditions?
The LM46002-Q1 accepts an input voltage from 3.5 V to 60 V, making it capable of surviving typical automotive load-dump transients that can spike up to 60 V on a 12 V or 24 V battery rail. This eliminates the need for external TVS diodes or voltage clamping in most standard 12 V automotive ECU power designs.
How much output current can the LM46002-Q1 deliver, and what conversion efficiency can designers expect?
The device provides up to 2 A of continuous output current using integrated synchronous high-side and low-side MOSFETs. The synchronous topology typically achieves conversion efficiencies above 90% at moderate loads, significantly reducing heat dissipation and enabling fanless designs in confined automotive module enclosures.
Is the LM46002-Q1 suitable for ADAS and infotainment power supplies from a regulatory standpoint?
Yes. The LM46002-Q1 holds AEC-Q100 Grade 1 qualification, confirming reliability from -40°C to 125°C ambient as required for automotive-grade components used in ADAS cameras, radar modules, and infotainment head units. Its spread-spectrum switching and adjustable frequency also facilitate CISPR 25 EMI compliance for sensitive in-vehicle electronics.
What external components are required to set the output voltage of the LM46002-Q1?
The output voltage is set with a resistor divider from the output to the feedback pin, a standard configuration requiring only 2 resistors to program any voltage within the converter's output range. Combined with an input capacitor, output inductor, and output capacitor, the full solution bill of materials can be under 10 passive components for a 3.3 V or 5 V rail at up to 2 A.
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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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