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LED control board based on SY7203DBC

Overview

This is an LED driver board using the SY7203DBC chip. For portability, a 21700 lithium battery has been added. The charging IC is an Ingenic IP2315, and the battery protection IC is an IP3005A.
The brightness control section of the SY7203 uses a GP9101 as an external PWM signal source, powered by a TPS61022 which draws power from the battery and boosts it to 5V (a significant overkill, but this design was intended to verify the TPS61022). For a lower-cost replication, the TPS61022 can be replaced with other chips. The GP9101 has very low power consumption, so a 500mA DC-DC converter should be sufficient.
The board uses a 2-series, 10-parallel configuration. Custom boards are available for other requirements.

Design Files

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2026-03-27 02:58:53

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