User guide for the Microchip MCP73871 evaluation board, covering overview, installation, operation, schematics and parts list.
The guide introduces the MCP73871 evaluation board, a development platform that demonstrates the MCP73871 linear Li‑Ion/Li‑Polymer charge controller with system load‑sharing. It explains the board’s purpose, the components included in the kit, and how it can be used to accelerate product design.
The document is organized into a product overview, installation and operation instructions, electrical schematics and layout drawings, a bill of materials, and a list of global sales and service locations. It also provides safety notices and references to related Microchip documentation. This manual is written in Chinese.
| Default charging voltage | 4.2 V (options 4.1 V, 4.35 V, 4.4 V) |
|---|---|
| Maximum total output current | ≥ 1.5 A |
| Fast‑charge current limit | 1 A (set by RPROG1) |
| Charge termination current | 100 mA (set by RPROG3) |
| Low‑battery (LBO) threshold | 3.1 V |
The board is set to a default charging voltage of 4.2 V, with alternative options of 4.1 V, 4.35 V, and 4.4 V.
The board can supply at least 1.5 A of total current to the system load and the single‑cell battery.
The LBO LED turns on when the battery voltage falls below the preset threshold of 3.1 V.