The TPS6300x family are single-inductor buck-boost converters that run from 1.8 V to 5.5 V and keep a steady output, for example 3.3 V, whether the battery is above or below it, with up to 96 percent efficiency. That suits a single Li-ion cell or two to three alkaline cells powering a 3.3 V robot controller. The family has the TPS63000, TPS63001 and TPS63002. Figures are from the Texas Instruments TPS6300x datasheet SLVS520C.
Key specifications
| Input | 1.8–5.5 V |
|---|---|
| Output | 1.2–5.5 V (fixed or adjustable) |
| Current | 1200 mA at 3.3 V (step-down), 800 mA (boost) |
| Efficiency | up to 96% |
| IQ | under 50 µA |
| Switch limit | 1.8 A typical |
| Package | VSON-10 |
What the datasheet promises
| Item | Datasheet value |
|---|---|
| Input voltage | 1.8 V to 5.5 V |
| Output voltage | Fixed and adjustable options from 1.2 V to 5.5 V |
| Output current | 1200 mA at 3.3 V in step-down mode (VIN 3.6 to 5.5 V); up to 800 mA at 3.3 V in boost mode (VIN above 2.4 V) |
| Efficiency | Up to 96 percent |
| Mode change | Automatic transition between step-down and boost |
| Quiescent current | Less than 50 µA, with a power-save mode at light load that can be disabled |
| Switch current limit | 1800 mA typical average |
| Shutdown | Load is disconnected from the battery |
| Temperature | Free-air −40 to 85 °C |
| Package | VSON-10 (DRC), 3 × 3 mm |
Output current falls as the input drops, as the two figures for step-down and boost above show. For a larger design use the TPS63020, which handles more current; for a boost only design see the TPS61023.
Using it on a robot
- Hold 3.3 V from a single Li-ion cell as it discharges below 3.3 V.
- Check the inductor and capacitor values in the datasheet application section; they affect stability.
- Disable power-save mode if switching noise at light load matters to an analog sensor.
Sources and further reading
- Texas Instruments TPS63000, TPS63001, TPS63002 datasheet (SLVS520C) — input range, outputs, current, efficiency, quiescent current, shutdown and package above.
Last reviewed: November 2026. Limits are from the Texas Instruments datasheet; breakout boards and modules vary. No price is quoted because it has not been checked.
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