component
SP4523
Public Unreviewedby Ray
TPOWER Battery Management, ESOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads on click. Unloads when scrolled away or the tab is hidden.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads on click. Unloads when scrolled away or the tab is hidden.
PCB Footprint
Open full view ↗Loads on click. Unloads when scrolled away or the tab is hidden.
Datasheet
Open in new tab ↗Loads on click. Unloads when scrolled away or the tab is hidden.
README
markdownSP4523
TPOWER · Battery Management · ESOP-8
SP4523 from TPOWER, in a ESOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VDD | power_in | Charger power input. Recommended operating range 4.6 V to 5.5 V (typ. 5 V). Bypass close to the pin with a low-ESR ceramic capacitor. |
| 2 | LED1 | output | Charge-status LED driver. Blinks at 1 Hz while charging and stays on when the battery is full; off during discharge. Drive current ~2 mA. |
| 3 | NC | unconnected | No connection. Leave floating. |
| 4 | LED2 | output | Discharge / battery-level LED driver. Solid on while discharging; blinks at 2 Hz as a low-battery warning when VBAT falls below 3.05 V. Drive current ~2 mA. |
| 5 | SWT | input | Push-button input. Short press powers on and shows battery level; double-click powers off. Connect a momentary switch to GND. |
| 6 | BAT | power_in | Lithium-ion battery positive terminal. Charge target 4.2 V or 4.35 V (option); discharge cutoff 2.9 V (typ.). Standby current ~25 uA. |
| 7 | SW | output | Switching node for the synchronous charger/boost power stage. Connect to the external inductor (typ. 2.2 uH, saturation current >3 A) between SW and BAT. Boost switching frequency ~500 kHz. |
| 8 | OUT | power_out | Boost output positive terminal. Regulated 5 V (4.8-5.2 V) at up to 1 A load. Bypass with low-ESR ceramic capacitors close to the pin. |
| 9 | GND | power_in | Exposed thermal pad / system ground. Must be soldered to a large PCB ground pour for proper thermal and electrical operation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TPOWER |
| Package | ESOP-8 |
| Category | PMIC |
| Pins | 9 |
CAD (KiCad official)
- Symbol:
SP4523 - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm - 3D model: ESOP-8 (KiCad packages3D, STEP)
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
sp4523.step |
125 KB | You want the bare part, or you mark your own boards. |
sp4523-etched.step |
1.7 MB | You want the part with SP4523 already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 416 faces against 152 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TPOWER datasheet (6 pp, sha256
5c449b3c41f1abe9, retrieved 2026-08-17, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).