TMCS1123A2AQDVGR - Texas Instruments

TMCS1123A2AQDVGR 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, a thermal pad on the bottom of the package should be connected to the ground plane using multiple vias.
• How do I ensure accurate current sensing with the TMCS1123A2AQDVGR?
  To ensure accurate current sensing, it's essential to follow the recommended layout guidelines, use a low-impedance PCB trace for the sense lines, and minimize the distance between the sense lines and the device. Additionally, the sense lines should be routed away from noisy signals and power traces.
• What is the maximum allowed voltage on the VDD pin?
  Although the datasheet specifies a recommended operating voltage range of 3.135V to 3.465V, the absolute maximum rating for the VDD pin is 4.0V. However, operating the device at this voltage may reduce its lifespan and reliability.
• How do I handle the device's power-on reset (POR) and brown-out reset (BOR) features?
  The TMCS1123A2AQDVGR has an internal POR and BOR circuitry that resets the device during power-up or brown-out conditions. To handle these features, ensure that the power supply is stable and within the recommended operating range. Additionally, add external circuitry, such as a voltage supervisor, to detect and respond to power failures or brown-out conditions.
• What is the recommended method for soldering the TMCS1123A2AQDVGR?
  Texas Instruments recommends using a reflow soldering process with a peak temperature of 260°C (500°F) for a maximum of 30 seconds. Hand soldering is not recommended due to the device's small size and lead-free finish.