LM76003RNP Texas Instruments Integrated Circuit (Quad Flat No-Lead) In Stock
Texas Instruments LM76003RNP is a 3 A synchronous step-down DC/DC regulator in a QFN package, supporting 3.8 V to 36 V input. Delivers up to 3 A output current with adjustable output voltage from 0.8 V and switching frequency up to 2.2 MHz. Available for worldwide shipping from authorized distributors.
- Manufacturer
- Texas Instruments
- Package
- Quad Flat No-Lead
- Pin Count
- 31
- Lifecycle
- ACTIVE
- Datasheet
- LM76003RNP Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Wide 3.8 V to 36 V input range covers automotive, industrial 24 V rail, and telecom 48 V bus applications
- 3 A continuous output current with adjustable output voltage starting from 0.8 V for flexible system power rails
- Switching frequency programmable up to 2.2 MHz enabling small external inductors and capacitors for compact PCB footprints
- Integrated 50 mΩ high-side and 30 mΩ low-side MOSFETs minimize conduction losses and simplify thermal management
Applications
The LM76003RNP targets industrial automation, factory sensor nodes, and motor-drive auxiliary power supplies where a 3 A rail must be derived from wide-range bus voltages up to 36 V. Its high switching frequency allows designers to shrink the solution footprint in space-constrained equipment such as PLCs, test instruments, and building automation controllers. It is also suitable for automotive ADAS subsystems requiring robust point-of-load conversion from a 12 V battery rail.
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 input and output voltage specifications does LM76003RNP support for industrial power supply designs?
LM76003RNP accepts an input voltage from 3.8 V to 36 V and provides an adjustable output voltage down to 0.8 V, making it compatible with 5 V, 12 V, and 24 V industrial bus rails. The wide range allows a single regulator to serve multiple power domains in factory automation equipment.
How does the switching frequency of LM76003RNP help reduce external component size in a compact PCB design?
With a programmable switching frequency up to 2.2 MHz, designers can use inductors as small as 1 µH and ceramic capacitors in the 10 µF to 22 µF range, cutting total solution area compared to lower-frequency regulators. This is especially valuable in space-constrained industrial sensor boards and ADAS modules.
When would LM76003RNP be preferable over a 1 A or 2 A step-down regulator for a 24 V industrial bus design?
When a load requires up to 3 A of sustained current — such as a multi-core processor, FPGA, or high-brightness LED array — LM76003RNP avoids stacking two smaller regulators in parallel, reducing component count, BOM cost, and board area. Its 36 V input rating directly handles 24 V bus transients without an input clamp.
What QFN package dimensions and thermal characteristics should layout engineers consider for LM76003RNP?
LM76003RNP uses a 3 mm × 3 mm 10-pin QFN package with an exposed thermal pad that reduces junction-to-board thermal resistance to approximately 30°C/W, supporting 3 A operation up to 85°C ambient with adequate copper pours. Designers should add at minimum 4 thermal vias under the exposed pad to meet the thermal budget.
Related Guides
1206 100 uF MLCC Design Guide for Compact Bulk Decoupling
Design guidance for applying CL31A107MQHNNNE and related 1206 MLCCs in compact bulk decoupling networks.
Jul 3, 2026
0402 10 nF MLCC Design Guide for High-Speed Decoupling
Practical design guidance for using CL05B103KB5NNNC and related 0402 MLCCs in high-speed decoupling networks.
Jul 3, 2026
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
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.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”