TPSM82903 Texas Instruments Integrated Circuit (Other) In Stock
Texas Instruments TPSM82903 is a high-efficiency synchronous buck converter module with integrated inductor, delivering 3 A output from a 3 V to 17 V input supply with ultra-low quiescent current. It combines controller, MOSFETs, and inductor in a single compact package for minimal BOM. Available from stock worldwide with competitive pricing.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 11
- Lifecycle
- ACTIVE
- Datasheet
- TPSM82903 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Integrated inductor, controller, and MOSFETs in a single module reducing external component count to 2-3 capacitors for complete 3 A power supply
- 3 V to 17 V input range with ultra-low IQ enabling continuous operation from single-cell Li-Ion at 3 V to 12 V and 15 V bus rails
- High-efficiency synchronous rectification achieving greater than 90% efficiency at 3 A output, minimizing heat dissipation in compact designs
Applications
The TPSM82903 is ideal for space-constrained portable, industrial, and IoT applications where a complete 3 A step-down power supply must occupy minimal board area with few external components. Its ultra-low quiescent current and wide 3 V to 17 V input range make it suitable for battery-operated wearable devices, wireless sensor nodes, and industrial field instruments that transition between active and sleep modes with sub-100 µA standby current requirements.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TPSM82903:
Frequently Asked Questions
What input voltage range and maximum output current does TPSM82903 support?
The TPSM82903 accepts input voltages from 3 V to 17 V and delivers up to 3 A continuous output current. This range covers single-cell Li-Ion batteries at 3 V to 4.2 V, 5 V USB, 12 V automotive and industrial rails, and 15 V adapter inputs within one standardized module design.
How does TPSM82903's integrated inductor reduce PCB design complexity compared to a discrete buck converter?
The TPSM82903 integrates the switching controller, high-side and low-side MOSFETs, and power inductor in a single module, reducing the external component count to 2-3 bypass and output capacitors. This eliminates inductor selection, placement, and EMI shielding challenges, shrinking the power supply footprint by up to 50% versus a discrete implementation.
What efficiency level does TPSM82903 achieve at 3 A and how does its low-IQ benefit battery-powered designs?
The TPSM82903 achieves greater than 90% conversion efficiency at 3 A output in typical operating conditions. Its ultra-low quiescent current—well below 100 µA in sleep mode—ensures that a 1000 mAh battery powering an IoT sensor node can sustain months of standby operation without recharging, extending product service life between maintenance visits.
How does TPSM82903 compare to a standalone buck controller plus external MOSFET solution for a 12 V to 3.3 V, 3 A design?
The TPSM82903 module replaces at least 10-12 discrete components (controller IC, 2 MOSFETs, inductor, bootstrap capacitor, gate resistors, and compensation network) with a single package, reducing assembly cost and BOM complexity. Trade-offs include fixed internal inductor value and slightly higher per-unit cost versus fully discrete designs at high production volumes above 10,000 units.
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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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