LM5085SD/NOPB Texas Instruments Integrated Circuit (Small Outline No-lead) In Stock
The LM5085SD/NOPB is a 4.5 V to 75 V input voltage-mode constant-on-time switching controller in an 8-pin SON package. It operates in fixed or adjustable output mode from 1.25 V and supports high-frequency buck regulation for 48 V telecom and industrial rails. Available from stock worldwide with same-day shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline No-lead
- Pin Count
- 9
- Lifecycle
- ACTIVE
- Datasheet
- LM5085SD/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.5700(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LM5085SD/NOPB?
- Wide 4.5 V to 75 V input range covers 12 V, 24 V, and 48 V industrial rails in a single design
- Constant on-time voltage-mode control enables fast load transient response without current sensing
- Adjustable output from 1.25 V allows flexible point-of-load regulation across multiple voltage rails
What is LM5085SD/NOPB used for?
The LM5085SD/NOPB is used in 48 V telecom power systems, industrial automation, and distributed power architectures where a wide input voltage range buck controller is required. Its constant-on-time control architecture eliminates the need for current sensing resistors, reducing power loss and BOM cost. It also suits automotive 12 V/24 V battery-powered equipment and factory automation controllers requiring regulated point-of-load voltages.
What are the specifications of LM5085SD/NOPB?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | ALSO OPERATES IN ADJUSTABLE MODE FROM 1.25V |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | VOLTAGE-MODE |
| Control Technique | CONSTANT ON TIME |
| Input Voltage-Max | 75V |
| Input Voltage-Min | 4.5V |
| 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 | 10A |
| Output Voltage-Max | 75V |
| Output Voltage-Min | 1.25V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC8,.12,20 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 1000kHz |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| 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 |
Where can I find the LM5085SD/NOPB datasheet?
LM5085SD/NOPB Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM5085SD/NOPB?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the input voltage range of LM5085SD/NOPB and which power rail architectures does it support?
The LM5085SD/NOPB accepts 4.5 V to 75 V input, covering 12 V, 24 V, and 48 V distributed power rails without topology changes. The 75 V maximum rating provides safe operation on a 48 V nominal bus with transient spikes up to 60 V, making it suitable for telecom rectifier outputs and industrial 24 V motor drive supplies in a single compact 8-pin SON footprint.
How does the LM5085SD/NOPB constant-on-time control benefit high-frequency buck designs compared to peak-current-mode controllers?
Constant-on-time control in the LM5085SD/NOPB achieves sub-100 ns load transient response without a current sensing resistor, eliminating the 0.1 Ω to 0.5 Ω power dissipation that peak-current-mode designs require. This reduces BOM count by 2 to 3 components and allows switching frequencies above 500 kHz, shrinking the output inductor from 10 µH to under 3 µH for the same 48 V to 5 V conversion.
Can LM5085SD/NOPB regulate down to 1.25 V output from a 48 V rail and what sets the output voltage?
Yes, the adjustable mode of the LM5085SD/NOPB regulates output voltage down to 1.25 V from inputs up to 75 V using two external resistors forming a voltage divider to the feedback pin. The internal reference is 1.25 V with ±2% accuracy, allowing precise rail setting across the full -40°C to 125°C temperature range without external trim components.
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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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