Texas Instruments recommends a thermal pad layout with a minimum of 2 oz copper thickness, and a thermal relief pattern to ensure good heat dissipation. A 4-layer PCB with a solid ground plane is also recommended.
To ensure stable output voltage regulation, it's essential to use a high-quality output capacitor with a low ESR (Equivalent Series Resistance) and a sufficient capacitance value (e.g., 10uF). Additionally, the input capacitor should be placed close to the device and have a low ESR.
Although the datasheet specifies a maximum input voltage of 15V, it's recommended to limit the input voltage to 12V to ensure reliable operation and prevent damage to the device.
To protect the device from overcurrent conditions, it's recommended to add an external current limiting resistor or a fuse in series with the input voltage. Additionally, the device has a built-in overcurrent protection feature that will limit the output current to a safe value.
The recommended operating temperature range for the TL7726QDG4 is -40°C to 125°C. However, the device can operate up to 150°C with derating. It's essential to ensure good thermal design and heat dissipation to maintain reliable operation.
TL7726QDG4 datasheet
by Texas Instruments
