LM5018SD/NOPB Texas Instruments Power Supply (Small Outline No-lead) In Stock
Texas Instruments LM5018SD/NOPB is a wide-input buck switching regulator with 7.5V to 100V input range, constant-on-time voltage-mode control, integrated high-voltage FET, and SOT-23 style no-lead package for industrial point-of-load supplies.
- Manufacturer
- Texas Instruments
- Package
- Small Outline No-lead
- Pin Count
- 9
- Lifecycle
- ACTIVE
- Datasheet
- LM5018SD/NOPB Datasheet PDF
- Category
- Power Supply
- Price
- From $2.4400(MOQ 250)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 7.5V to 100V input range with 48V nominal covers industrial 24V, 48V, and 72V bus rails as well as unregulated rectified mains in a single device
- Constant-on-time voltage-mode control provides fast transient response and easy loop compensation without an external current-sense resistor
- Integrated high-side power MOSFET in a compact 8-pin no-lead package reduces external component count and PCB area for industrial point-of-load converters
- High input voltage tolerance up to 100V makes the LM5018 suitable for motor-drive auxiliary rails and automotive 48V architectures with load-dump transients
Applications
The LM5018SD/NOPB targets industrial power supply designs that step down high-voltage bus rails (24V, 48V, or 72V) to regulated low-voltage logic or analog rails, including PLC I/O modules, motor-drive control boards, industrial fieldbus transceivers, and 48V telecom rectifier auxiliary supplies. Its 100V input rating and integrated FET simplify designs in environments with large input transients, reducing external protection components while fitting into a small no-lead PCB footprint.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | VOLTAGE-MODE |
| Control Technique | CONSTANT ON TIME |
| Input Voltage-Max | 100V |
| Input Voltage-Min | 7.5V |
| Input Voltage-Nom | 48V |
| JESD-30 Code | S-PDSO-N8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 0.3A |
| Output Voltage-Max | 90V |
| Output Voltage-Min | 1.25V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 1000kHz |
| Technology | BICMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.8mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline No-lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM5018SD/NOPB:
Frequently Asked Questions
What input voltage range does the LM5018SD/NOPB cover, and which industrial bus rails does this span?
The LM5018SD/NOPB operates from 7.5V to 100V input, encompassing 12V, 24V, 48V, and 72V industrial bus rails in a single part. It can also handle the 100V load-dump transients present in 48V automotive and telecom rectifier systems without requiring an external TVS diode for over-voltage protection.
How does the constant-on-time control mode of the LM5018SD/NOPB simplify power supply design compared to traditional PWM?
Constant-on-time control is a pseudo-fixed frequency method that eliminates the need for an external current-sense resistor and simplifies loop compensation to a single output capacitor and resistor divider. It also provides inherently fast transient response—typically within 2 to 3 switching cycles—making it advantageous for industrial loads with rapid current step changes.
Does the LM5018SD/NOPB include an integrated power MOSFET, and what does that mean for BOM complexity?
Yes. The device integrates a high-side N-channel power MOSFET rated for the full 100V input range, reducing the external BOM to an inductor, output capacitor, catch diode, and feedback resistors. This integration shrinks the component count by at least 2 to 3 parts compared to a discrete controller-plus-FET solution in a standard 8-pin no-lead package.
In which thermal or size-constrained environments does the SOT-23-style no-lead package of the LM5018SD/NOPB provide an advantage?
The 8-pin no-lead package (approximately 3×3 mm footprint with an exposed pad) dissipates heat directly through the PCB ground plane, enabling higher continuous power delivery in confined industrial enclosures where airflow is limited, while using less than half the board area of an equivalent SOIC-8 solution.
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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 250+ | $2.6900 | $672.50 |
| 1000+ | $2.5200 | $2520.00 |
| 2000+ | $2.4400 | $4880.00 |
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.”