A good PCB layout for the TS922IDT involves keeping the input and output traces short and symmetrical, using a solid ground plane, and placing decoupling capacitors close to the device. A 4-layer PCB with a dedicated power plane and a solid ground plane is recommended.
To ensure proper biasing, connect the VCC pin to a stable voltage source, and decouple it with a 10uF capacitor to ground. The VREF pin should be connected to a stable voltage reference, and the ISET pin should be connected to a resistor to set the output current.
The TS922IDT can deliver up to 2A of output current, but this depends on the input voltage, output voltage, and thermal conditions. It's essential to check the device's thermal performance and adjust the output current accordingly.
To protect the TS922IDT from overvoltage and undervoltage conditions, use a voltage supervisor or a reset IC to monitor the input voltage and reset the device if it falls outside the recommended operating range.
The recommended input capacitor value for the TS922IDT is 10uF to 22uF, with a voltage rating that matches the input voltage. A low-ESR capacitor is recommended to minimize voltage ripple and ensure stable operation.
TS922IDT datasheet
by STMicroelectronics
