LTC1257IS8 datasheet by Linear Technology

LTC1257IS8 Frequently Asked Questions (FAQs)

• What is the maximum input voltage that the LTC1257IS8 can handle?
  The maximum input voltage that the LTC1257IS8 can handle is 36V, but it's recommended to keep it below 30V for reliable operation.
• How do I ensure the LTC1257IS8 is stable and doesn't oscillate?
  To ensure stability, make sure to follow the recommended layout and component selection guidelines in the datasheet, and add a 10nF capacitor between the VCC and GND pins.
• What is the minimum ESR (Equivalent Series Resistance) required for the output capacitor?
  The minimum ESR required for the output capacitor is 0.05 ohms, but it's recommended to use a capacitor with an ESR of 0.01 ohms or less for optimal performance.
• Can I use the LTC1257IS8 in a high-temperature environment?
  The LTC1257IS8 is rated for operation up to 125°C, but it's recommended to derate the output current and voltage at high temperatures to ensure reliable operation.
• How do I calculate the output voltage of the LTC1257IS8?
  The output voltage of the LTC1257IS8 can be calculated using the formula: Vout = (R1/R2) * (Vref - Vfb), where R1 and R2 are the feedback resistors, Vref is the reference voltage, and Vfb is the feedback voltage.