TPS61023
Public Made by Adomby adom
TI synchronous boost converter, SOT-563. 0.5 V start-up, adjustable 2.2-5.5 V out, 3.7 A switch. Datasheet-verified.
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markdownTPS61023
Texas Instruments · Boost switching regulator · SOT-563
Synchronous boost (step-up) converter in a tiny SOT-563 package, built for single-cell battery and supercap rails. It starts from 0.5 V (1.8 V minimum to start) and boosts an adjustable 2.2 to 5.5 V output set by an external FB divider, with a 3.7 A valley switch-current limit. True input-to-output disconnect, 5.7 V output OVP, short-circuit and thermal protection round it out. The default way to make a stable 3.3 V or 5 V rail from a drooping battery.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | FB | input | Voltage feedback pin for the adjustable output voltage. External R1/R2 divider from VOUT sets VOUT via the internal reference (V_REF = 595 mV typical in PWM mode). Very low leakage (~4 nA typical at 25 °C). |
| 2 | EN | input | Enable logic input. Logic high enables the device; logic low forces shutdown mode (~0.1 µA). V_EN_H = 1.2 V (max), V_EN_L = 0.35–0.45 V. Absolute max -0.3 V to 7 V. |
| 3 | VIN | power_in | IC power supply input. Recommended operating range 0.5 V to 5.5 V (1.8 V minimum required for start-up). Decouple locally with a ceramic capacitor (1.0 µF min, 4.7 µF typical). |
| 4 | GND | power_in | Ground pin of the IC. Return for input and output capacitors; connect directly to the system ground plane with a low-impedance path. |
| 5 | SW | power_out | Switch node of the boost converter. Connected to the drain of the internal low-side power MOSFET (47 mΩ) and the source of the internal high-side power MOSFET (68 mΩ). External inductor (0.37–2.9 µH; 1.0 µH typical) ties SW to VIN. Absolute max -0.3 V to 7 V (transient spikes to 9 V for 1 ns allowed). |
| 6 | VOUT | power_out | Boost converter output. Adjustable 2.2 V to 5.5 V set by external FB divider. Also supplies internal bias during light-load / super-cap backup operation (I_Q from VOUT ~20 µA typical). 5.7-V OVP; connect output capacitor (4 µF to 1000 µF effective, 10 µF typical). |
Key specifications
| Parameter | Value |
|---|---|
| Type | Synchronous boost (step-up) converter |
| Start-up voltage | 0.5 V (1.8 V min to start) |
| Input voltage | 0.5-5.5 V |
| Output voltage | 2.2-5.5 V adjustable (FB divider) |
| Switch current limit | 3.7 A (valley) |
| Protection | True I/O disconnect, 5.7 V OVP, short-circuit, thermal |
| Package | SOT-563 |
| Body (L×W×H) | 1.6 × 1.6 × 0.6 mm |
Ordering variants
Same part, different packaging or reel option.
TPS61023DRLR (SOT-563, tape & reel)
CAD (KiCad official)
- Symbol:
TPS61023 (Adom-authored grouped symbol via adom-symbol; not in KiCad libs) - Footprint:
Package_TO_SOT_SMD:SOT-563 - 3D model: SOT-563 (KiCad packages3D)
- 3D model files:
tps61023-etched.step/tps61023-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tps61023.step/tps61023.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (28 pp, sha256
e3558c95c8420812, retrieved 2026-08-17, tier: manufacturer) - Extractor:
ds2sf(Claude) — every pin and dimension is cited to a datasheet page; refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).