Texas Instruments recommends a compact layout with the device placed close to the battery, using short traces and minimizing the area of the power and ground planes to reduce EMI. A 4-layer PCB with a solid ground plane is recommended.
The TRS3221ECDB has a power-on reset (POR) circuit that ensures the device is properly powered on and off. Connect a 10nF capacitor between the VCC and GND pins, and ensure the input voltage rises slowly (typically 10ms) to prevent false triggering.
The maximum allowed voltage on the VCC pin is 6.5V. Exceeding this voltage can cause permanent damage to the device. Ensure the input voltage is within the recommended operating range of 2.7V to 5.5V.
The TRS3221ECDB has built-in ESD protection, but it's still recommended to follow proper ESD handling procedures during assembly and testing. Use an ESD wrist strap or mat, and ensure the device is handled in a static-safe environment.
The recommended operating temperature range for the TRS3221ECDB is -40°C to 85°C. Operating the device outside this range can affect its performance and reliability.
TRS3221ECDB datasheet
by Texas Instruments
