SM72485SDX/NOPB Texas Instruments Integrated Circuit (Small Outline No-lead) In Stock
SM72485SDX/NOPB is a 100 V, 150 mA constant on-time current-mode buck switching regulator in an 8-pin WSON package, accepting a 6 V to 95 V input for industrial and solar applications. It delivers an adjustable output voltage from 2.5 V and operates across -40°C to 125°C, targeting high-voltage bias supply and photovoltaic system power management.
- Manufacturer
- Texas Instruments
- Package
- Small Outline No-lead
- Pin Count
- 9
- Lifecycle
- ACTIVE
- Datasheet
- SM72485SDX/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.3600(MOQ 186)
- 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 SM72485SDX/NOPB?
- Input voltage range 6 V to 95 V for high-voltage industrial and solar bus systems
- 150 mA maximum output current with constant on-time current-mode control
- Adjustable output voltage from 2.5 V for flexible bias rail generation
- 8-pin WSON (WSON-8) package for compact high-voltage PCB footprints
- Operating temperature range -40°C to 125°C for harsh industrial environments
- Current-mode control for fast load transient response and simple compensation
What is SM72485SDX/NOPB used for?
The SM72485SDX/NOPB is ideal for generating low-voltage bias supplies from high-voltage 24 V, 48 V, or solar panel bus rails in photovoltaic inverters, industrial motor drives, and building automation controllers where an isolated or non-isolated 5 V or 12 V auxiliary rail is needed at currents up to 150 mA. Its 95 V input rating also suits energy harvesting circuits, LED street-light drivers, and telecom power supply monitoring circuits that must operate directly from high-voltage DC buses.
What are the specifications of SM72485SDX/NOPB?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | ALSO OPERATES IN ADJUSTABLE MODE FROM 2.5V |
| 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-N8 |
| 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, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 600kHz |
| 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 |
Where can I find the SM72485SDX/NOPB datasheet?
SM72485SDX/NOPB Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SM72485SDX/NOPB?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does the SM72485SDX/NOPB support for solar and industrial bus applications?
The device accepts 6 V to 95 V on its input, covering standard industrial 24 V and 48 V DC buses as well as open-circuit solar panel voltages up to 80 V in typical residential and commercial photovoltaic systems, enabling direct step-down regulation without an additional pre-regulator stage.
How does constant on-time current-mode control in the SM72485SDX/NOPB simplify compensation compared to voltage-mode converters?
Constant on-time current-mode control makes the output capacitor the dominant pole, so compensation requires only a simple RC network or even a single output capacitor; this reduces design time and allows stable operation with low-ESR ceramic capacitors in the 10 µF to 47 µF range.
What is the maximum output current of the SM72485SDX/NOPB and what typical loads does it support?
Maximum output current is 150 mA, sufficient for powering gate-drive bias supplies (typically 20–50 mA at 15 V), microcontroller rails (50–100 mA at 3.3 V or 5 V), and analog signal-conditioning circuits in industrial inverter control boards operating from a 48 V bus.
Over what temperature range does the SM72485SDX/NOPB operate in harsh industrial environments?
The device is rated from -40°C to 125°C junction temperature, meeting the operating requirements of outdoor industrial enclosures, motor drive heat sinks, and solar inverter housings that experience extreme temperature swings in desert or arctic deployment environments.
How is the output voltage of the SM72485SDX/NOPB set and what is the minimum achievable output?
Output voltage is programmed by a resistor divider connected to the feedback pin with a 1.25 V reference, and the adjustable range starts from 2.5 V, allowing generation of 3.3 V, 5 V, and 12 V rails from a high-voltage input by changing two feedback resistor values without any other hardware modification.
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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.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
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| 186+ | $2.0250 | $376.65 |
| 500+ | $1.5300 | $765.00 |
| 1000+ | $1.4500 | $1450.00 |
| 10000+ | $1.3600 | $13600.00 |
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