LM4755TS/NOPB datasheet by Texas Instruments

LM4755TS/NOPB Frequently Asked Questions (FAQs)

• What is the recommended power supply decoupling for the LM4755TS?
  Texas Instruments recommends using a 10uF capacitor in parallel with a 0.1uF capacitor, both connected between the power supply pins (VIN and GND) and placed as close to the device as possible.
• How do I ensure the LM4755TS operates within its safe operating area (SOA)?
  To ensure the LM4755TS operates within its SOA, ensure that the output current does not exceed 2.5A, the output power does not exceed 20W, and the junction temperature does not exceed 150°C.
• What is the recommended PCB layout for the LM4755TS?
  Texas Instruments recommends a 4-layer PCB with a solid ground plane, and to keep the power supply traces as short and wide as possible. Additionally, the output traces should be symmetrical and as short as possible.
• Can I use the LM4755TS in a bridged configuration?
  Yes, the LM4755TS can be used in a bridged configuration to increase the output power. However, this requires careful consideration of the power supply, PCB layout, and thermal management.
• How do I protect the LM4755TS from overvoltage and undervoltage conditions?
  Texas Instruments recommends using a voltage supervisor or a power-on reset circuit to ensure the LM4755TS is only enabled when the power supply voltage is within the recommended operating range (8V to 26V).