TMS3637P datasheet by Texas Instruments

TMS3637P Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  Texas Instruments recommends a 2-layer or 4-layer PCB with a solid ground plane on the bottom layer to improve thermal performance. Additionally, it's essential to have a thermal relief pattern on the PCB to ensure good thermal conduction.
• How do I ensure the output voltage is stable and accurate?
  To ensure stable and accurate output voltage, it's crucial to use a high-quality output capacitor with low ESR (Equivalent Series Resistance) and a sufficient capacitance value. TI recommends a minimum capacitance of 10uF with an ESR of less than 1 ohm.
• What is the maximum input voltage that can be applied to the TMS3637P?
  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.
• How do I handle the enable pin (EN) during power-up and power-down sequences?
  During power-up, the EN pin should be pulled high after the input voltage has reached a minimum of 2.5V. During power-down, the EN pin should be pulled low before the input voltage drops below 2.5V. This ensures proper device operation and prevents unwanted startup or shutdown.
• What is the recommended input capacitor value and type for the TMS3637P?
  TI recommends using a 1uF to 10uF ceramic capacitor with an X5R or X7R dielectric as the input capacitor. This helps to filter out noise and ensure stable operation.