Supported Models
- AP watch product family — up to 2.5W dynamic-decoding charging
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Wireless Charging Solution Products
JX178 AP Watch 2.5W Wireless Charging Solution
Model: JX178 / 9913 SOC
A compact AP watch wireless charging reference design using the 9913 SOC, with 2.5W dynamic decoding, low temperature rise and flexible integration for single-watch and multi-device products.
9913 SOCAP Watch 2.5WDynamic decodingOffline upgrade
Technical Solution Display
This page presents technical specifications, performance, compatibility and applications. It is not an online retail listing.
Solution Overview
Performance, Advantages, Compatibility & Applications
Performance
- 2.5W maximum watch charging output
- 270-420 mA input current
- 5V input through USB-A or USB-C
- 5.4 μH ±5% coil with Q factor ≥30
Advantages
- Stable, efficient charging with low temperature rise
- No pop-up messages during charging
- Offline firmware upgrade support
- Cost-effective 9913 SOC + op-amp + MOS architecture
Applications
- Single-watch wireless chargers
- 2-in-1 and 3-in-1 charging stations
- Magnetic wireless power banks with watch charging
- Custom AP watch charging accessories
Performance & Technical Features
- Supports AP watch models at up to 2.5W with dynamic decoding
- Stable and efficient charging without pop-up messages
- Low-temperature-rise design
- Offline firmware upgrade and dual-protocol dynamic decoding support
- Cost-effective 9913 SOC + operational amplifier + MOS architecture
Technical Specifications
| Wireless charging SOC | 9913 |
|---|---|
| Watch charging output | 2.5W max |
| Decoding | Dynamic decoding |
| Coil inductance | 5.4 μH ±5% |
| Coil Q factor | ≥30 |
| Magnet grade | GS 3600 |
| Spacer height | 0.8-1.2 mm |
| PCB | 2 layers, 0.8-1.0 mm thickness, immersion gold, outer copper 1 oz |
| Input | 5V via USB-A or USB-C |
| Input current | 270-420 mA |
Engineering Reference
JX178 Full Solution Sheet
Open the solution sheet in a new window to inspect every parameter at full size.
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