# TPS6300x buck-boost converter: 1.8 to 5.5 V in, 1200 mA, 96% efficient

> A single-inductor buck-boost converter that holds a steady output as a battery discharges: input range, output current, efficiency and package.

Canonical: https://roboticsengineering.in/components/tps63001-buck-boost-converter/ | Published: 2026-11-03 | Updated: 2026-11-03

**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](https://roboticsengineering.in/components/tps63020-buck-boost-converter/), which handles more current; for a boost only design see the [TPS61023](https://roboticsengineering.in/components/tps61023-boost-converter/).

## 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)](https://www.ti.com/lit/ds/symlink/tps63001.pdf) — 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.