MAX1673ESA datasheet by Maxim Integrated Products

MAX1673ESA Frequently Asked Questions (FAQs)

• What is the recommended layout and placement for the MAX1673ESA?
  The MAX1673ESA is a high-frequency device, so it's essential to follow good layout and placement practices to minimize noise and ensure proper operation. Maxim recommends keeping the input and output traces short and away from each other, using a solid ground plane, and placing the device close to the power source. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane.
• How do I optimize the MAX1673ESA for low noise and high PSRR?
  To optimize the MAX1673ESA for low noise and high PSRR, it's essential to use a low-ESR input capacitor, keep the input voltage as clean as possible, and use a high-quality output capacitor. Additionally, it's recommended to use a ferrite bead or a choke inductor in series with the input voltage to filter out high-frequency noise. Proper PCB layout and grounding techniques also play a crucial role in minimizing noise and ensuring high PSRR.
• What is the maximum input voltage that the MAX1673ESA can handle?
  The MAX1673ESA is rated for an input voltage range of 4.5V to 16V. However, it's essential to note that the device can handle input voltage transients up to 18V for short durations (less than 100ms). It's recommended to use a voltage clamp or a transient voltage suppressor to protect the device from input voltage transients exceeding 18V.
• How do I ensure the MAX1673ESA is stable and doesn't oscillate?
  To ensure the MAX1673ESA is stable and doesn't oscillate, it's essential to follow the recommended output capacitor selection guidelines, use a low-ESR output capacitor, and keep the output voltage derating in mind. Additionally, it's recommended to use a minimum output load of 10mA to ensure the device remains stable. Proper PCB layout and grounding techniques also play a crucial role in preventing oscillations.
• What is the typical dropout voltage of the MAX1673ESA?
  The typical dropout voltage of the MAX1673ESA is around 1.5V at an output current of 1A. However, the dropout voltage can vary depending on the input voltage, output current, and temperature. It's recommended to refer to the datasheet for the typical dropout voltage characteristics and to ensure the device is operated within the recommended operating conditions.