TSH94ID datasheet by STMicroelectronics

TSH94ID Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  STMicroelectronics provides a recommended PCB layout in the application note AN5093, which includes guidelines for thermal vias, copper pours, and component placement to ensure optimal thermal performance.
• How do I select the correct output capacitor for the TSH94ID?
  The output capacitor selection depends on the output voltage, output current, and desired ripple voltage. A general guideline is to use a low-ESR capacitor with a value between 10uF to 22uF. Refer to the application note AN5093 for more detailed guidance.
• What is the maximum input voltage that the TSH94ID can handle?
  Although the datasheet specifies a maximum input voltage of 18V, it's recommended to limit the input voltage to 15V to ensure reliable operation and prevent damage to the device.
• How do I implement overcurrent protection with the TSH94ID?
  The TSH94ID has a built-in overcurrent protection feature. To implement it, connect a sense resistor (Rs) between the output pin and the GND pin. The device will limit the output current to a safe value when the voltage across Rs exceeds 0.5V.
• What is the purpose of the EN pin, and how do I use it?
  The EN (Enable) pin is used to turn the device on or off. When the EN pin is pulled high (above 2.5V), the device is enabled, and when it's pulled low (below 0.8V), the device is disabled. This pin can be used to implement power sequencing or to reduce power consumption in standby mode.