component
NST03AA
Public Made by Adomby adom
WXNSIC Battery Management, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownNST03AA
WXNSIC · Battery Management · SOP-8
NST03AA from WXNSIC, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | LX | output | Boost converter switching output node (升压开关输出); the datasheet gives no voltage or current limit for this pin. |
| 2 | GND | power_in | Ground reference; all voltage ratings in the datasheet are referenced to VSS. |
| 3 | BAT | power_in | Battery positive input; preset charge voltage is 4.2 V (NST03AA) or 4.35 V (NST03AAH), BAT overvoltage protection is 5.1 V, and the output shuts off when BAT falls to 2.8 V. |
| 4 | VCC | power_in | 5 V adapter input with a 4.5 V to 5.5 V operating range (typ. 5 V) and overvoltage protection at 6.2 V (recovers at 5.8 V); absolute maximum is 6 V. |
| 5 | L1 | output | Discharge-status LED driver: stays on once boost starts, and flashes at 2 Hz as a low-battery warning when BAT drops below 3.1 V. |
| 6 | L2 | output | Charge-status LED driver: flashes at 1 Hz while charging and stays on solid when the battery is full (4.2 V). |
| 7 | KEY | input | Push-button pin for single-click power on/off, with an internal pull-up current of 40 uA at BAT = 3.7 V. |
| 8 | OUT | power_out | Boost 5 V output, rated 4.8 V to 5.2 V at 0.3 A load, with short-circuit protection (output-short delay 420 uS, trip voltage 3.0 V) and heavy-load protection (4.2 V, 8 ms delay). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | WXNSIC |
| Package | SOP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| VCC supply voltage | VCC | 4.5 | 5 | 5.5 | V | 5 | |
| Boost operating frequency | FOP | 0.8 | 1 | 1.2 | MHz | 5 | |
| Boost output voltage | VOUT | 4.8 | 5 | 5.2 | V | ILOAD=0.3A | 5 |
| VCC voltage (absolute maximum) | VCC | -0.3 | 6 | V | 5 | ||
| Other pins voltage (absolute maximum) | -0.3 | V | 5 | ||||
| Storage ambient temperature | -55 | 150 | ℃ | 5 | |||
| Operating junction temperature | -40 | 150 | ℃ | 5 | |||
| Power dissipation | 0.8 | W | 5 | ||||
| ESD rating | 3 | KV | 5 |
CAD (KiCad official)
- Symbol:
NST03AA - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
nst03aa-etched.step/nst03aa-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);nst03aa.step/nst03aa.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: WXNSIC datasheet (9 pp, sha256
6c7af41007607789, retrieved 2026-10-19, 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: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).