SM72485MM/NOPB Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Wide input range current-mode step-down DC-DC switching regulator accepting 6 V to 95 V input and delivering a fixed 2.5 V output at up to 150 mA in an 8-pin VSSOP package. Nominally designed for 48 V solar and industrial supply rails, providing a regulated auxiliary bias supply from high-voltage bus. Suitable for solar panel maximum power point tracking systems, 48 V telecom rails, and high-voltage industrial equipment bias supplies.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- SM72485MM/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.4900(MOQ 1000)
- 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 SM72485MM/NOPB?
- Wide 6 V to 95 V input range for high-voltage bus applications
- Current-mode control for fast transient response
- Fixed 2.5 V output at 150 mA for bias supply generation
- Nominal 48 V input optimization for solar and telecom rails
- Compact 8-pin VSSOP package
- Single-channel step-down switching regulator
- Pb-free JESD-609 e3 compliant
What is SM72485MM/NOPB used for?
The SM72485MM/NOPB generates a regulated 2.5 V bias supply directly from high-voltage 48 V or up to 95 V solar panel bus rails in maximum power point tracking inverters, eliminating the need for a separate auxiliary transformer. Telecom equipment and 48 V distributed power architectures use it to derive low-power logic supply voltages from the main bus with minimal external components. Industrial controllers, motor drive gate power supplies, and high-voltage test equipment also employ it as a compact wide-input auxiliary regulator.
What are the specifications of SM72485MM/NOPB?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT MODE |
| Input Voltage-Max | 95V |
| Input Voltage-Min | 6V |
| Input Voltage-Nom | 48V |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 0.15A |
| Output Voltage-Max | 85V |
| Output Voltage-Min | 2.5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 600kHz |
| Technology | BICMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
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 SM72485MM/NOPB datasheet?
SM72485MM/NOPB Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SM72485MM/NOPB?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does SM72485MM/NOPB's 6 V to 95 V input range enable direct biasing from a solar panel string without an isolation transformer?
The 95 V maximum input allows the SM72485MM/NOPB to connect directly across a solar panel string or 48 V bus and produce a stable 2.5 V at 150 mA, supplying microcontroller and gate drive bias circuits without requiring a separate isolated flyback converter or auxiliary winding on the main transformer.
What current-mode control architecture does SM72485MM/NOPB use, and how does it improve transient response in variable-input systems?
Current-mode control senses the inductor current on a cycle-by-cycle basis, providing inherent feedforward rejection of input voltage variations from 6 V to 95 V, so the 2.5 V output recovers within microseconds from load steps without the sluggish response typical of voltage-mode regulators on wide-input supplies.
For a 48 V telecom rack unit needing a 2.5 V auxiliary rail at 100 mA, what external components does SM72485MM/NOPB require?
A typical SM72485MM/NOPB application circuit requires an input filter capacitor, an output inductor in the range of 10 µH to 47 µH, an output capacitor of 10 µF to 100 µF, a freewheeling diode, and a few feedback resistors, fitting the complete 2.5 V auxiliary supply onto a PCB area of approximately 1 cm² around the 8-pin VSSOP package.
How does SM72485MM/NOPB compare to a linear regulator for generating 2.5 V from a 48 V bus in terms of power dissipation?
A linear regulator dropping from 48 V to 2.5 V at 150 mA would dissipate approximately 6.8 W as heat, requiring a large heatsink, whereas the SM72485MM/NOPB step-down switching regulator achieves efficiencies above 80%, dissipating less than 0.5 W in the 8-pin VSSOP package without any additional thermal management.
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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.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1000+ | $2.5200 | $2520.00 |
| 2000+ | $2.4900 | $4980.00 |
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