TL7726QD datasheet by Texas Instruments

TL7726QD Frequently Asked Questions (FAQs)

• What is the recommended layout and placement for the TL7726QD?
  Texas Instruments recommends a compact layout with the TL7726QD placed close to the input capacitors and the output capacitors. The input and output pins should be routed away from each other to minimize noise coupling. A 4-layer PCB with a solid ground plane is recommended to reduce EMI and improve thermal performance.
• How do I ensure the TL7726QD is stable and doesn't oscillate?
  To ensure stability, follow the recommended component values and layout guidelines in the datasheet. Additionally, ensure that the input and output capacitors are of high quality and have low ESR. A minimum of 1uF input capacitance and 2.2uF output capacitance is recommended. Also, avoid using capacitors with high inductance or resistance.
• What is the maximum input voltage that the TL7726QD can handle?
  The TL7726QD can handle a maximum input voltage of 18V. However, it's recommended to operate the device within the specified input voltage range of 7V to 15V for optimal performance and reliability.
• Can I use the TL7726QD in a high-temperature environment?
  The TL7726QD is rated for operation up to 125°C junction temperature. However, the device's performance and reliability may degrade at high temperatures. It's recommended to derate the output current and ensure proper thermal management to prevent overheating.
• How do I calculate the output voltage ripple of the TL7726QD?
  The output voltage ripple of the TL7726QD can be calculated using the formula: ΔVout = (Iout * ESRout) / (fsw * Cout), where Iout is the output current, ESRout is the output capacitor's ESR, fsw is the switching frequency, and Cout is the output capacitance. The datasheet provides a detailed calculation example.