Application note describing the HT46R47‑based lithium‑ion battery charger demo board, its features, operation and circuit details.
This document introduces the HT46R47 microcontroller‑based lithium‑ion battery charger demonstration board. It explains the need for precise charging control for Li‑ion cells and presents the board as a reference design for developers.
The manual details charger characteristics, usage steps, channel wiring, LED status indicators, power supply options, and provides the full circuit schematic along with a version history of revisions. This manual is written in Chinese.
| Slow charge current | 150 mA |
|---|---|
| Fast charge current | 600 mA |
| Constant‑voltage termination voltage | 4.2 V |
| Termination current | <30 mA |
| Over‑voltage stop voltage | 4.17 V |
| Battery insertion detection threshold | 1.1 V |
| Low‑voltage pre‑charge trigger | <3.7 V |
| Fast‑charge voltage trigger | ≥3.7 V |
| Maximum fast‑charge duration | 2 hours |
It measures the voltage on BAT0 or BAT1; if the voltage exceeds 1.1 V the charger assumes a battery is present.