TPS62902 Texas Instruments Integrated Circuit (Other) In Stock
Texas Instruments TPS62902 is a high-efficiency, low-IQ synchronous buck converter accepting 3 V to 17 V input in a tiny 1.5 mm × 2 mm QFN package, delivering programmable output voltage with ultra-low quiescent current for IoT and battery applications. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 9
- Lifecycle
- ACTIVE
- Datasheet
- TPS62902 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 3 V to 17 V input range covers single-cell Li-ion through 4-cell alkaline batteries and 12 V industrial rails in one device
- Ultra-low quiescent current below 50 nA in shutdown and deep sleep extends battery run time to multiple years in IoT sensor nodes
- 1.5 mm × 2 mm QFN package enables an entire buck regulator solution under 25 mm² with all passives, fitting the smallest IoT modules
Applications
The TPS62902 is designed for IoT edge nodes, wireless sensors, and always-on wearables where minimizing standby current consumption is as important as peak efficiency. Its wide 3 V to 17 V input range and programmable output accommodate diverse power sources from single Li-ion cells to multi-cell primary batteries, letting one design revision support multiple product SKUs. The compact QFN solution footprint enables integration into ultra-thin form factors such as smart labels, asset trackers, and miniature environmental sensors requiring sub-µA system sleep currents.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TPS62902:
Switching Regulator, Current/voltage-mode, 2A, 2500kHz Switching Freq-Max, PQCC9
Frequently Asked Questions
How does TPS62902's ultra-low quiescent current impact battery life in a LoRaWAN asset tracker sleeping 99% of the time?
With a quiescent current below 50 nA in light load or shutdown, TPS62902 adds less than 0.05 µA to the system sleep current budget of a LoRaWAN tracker. For a 2000 mAh AA primary cell with a 99% duty-cycle sleep, the regulator alone contributes fewer than 5 µAh per year, allowing over 10 years of theoretical shelf life from the regulator's contribution alone. By contrast, a conventional buck converter drawing 50 µA quiescent at 99% sleep duty cycle would consume 438 mAh per year, shortening battery life by over 50%.
Can TPS62902 efficiently step down a 12 V industrial supply to 3.3 V for a field sensor node in a factory automation system?
Yes. The TPS62902 accepts inputs up to 17 V, comfortably handling a regulated 12 V industrial supply with margin for transients. It delivers a stable 3.3 V output at high efficiency using synchronous rectification, reducing heat dissipation compared with a linear regulator that would waste over 8 V × load current as heat. For a 100 mA sensor node, the switching regulator dissipates roughly 30 mW versus 900 mW for a linear approach, eliminating the need for heat sinking in the compact 1.5 mm × 2 mm QFN footprint.
How does the 1.5 mm × 2 mm QFN package of TPS62902 compare with competitors' buck converters for a miniature Bluetooth module design?
The 1.5 mm × 2 mm (3 mm²) QFN of TPS62902 is among the smallest footprints available for a buck converter in its input voltage class. Competitive devices in SOT-23-5 packages occupy roughly 9 mm² and require larger external inductors due to lower switching frequencies. TPS62902's small package combined with a 1 µH or smaller inductor allows the complete power solution to fit under 25 mm², making it viable for Bluetooth beacon PCBs measuring under 10 mm × 10 mm where every square millimeter is at a premium.
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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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