Texas Instruments recommends a 2-layer or 4-layer PCB with a solid ground plane and a thermal relief pattern around the device to minimize thermal resistance. A detailed layout guide can be found in the application note 'LP5952 Layout Guidelines' (SLVAU65).
To ensure accurate and stable output voltage, it is recommended to use a high-quality output capacitor with low ESR (Equivalent Series Resistance) and a minimum capacitance of 10uF. Additionally, the input voltage should be well-regulated and the device should be operated within its specified temperature range.
Although the datasheet specifies a maximum input voltage of 5.5V, it is recommended to limit the input voltage to 5V to ensure reliable operation and to prevent damage to the device.
While the device is specified to operate up to 125°C, it is recommended to derate the output current and to ensure good thermal management to prevent overheating. A detailed thermal derating chart can be found in the datasheet.
To troubleshoot output voltage errors or instability, check the input voltage, output capacitor, and PCB layout for any issues. Also, ensure that the device is operated within its specified temperature range and that the output current is within the recommended limits. A detailed troubleshooting guide can be found in the application note 'LP5952 Troubleshooting Guide' (SLVAU66).
LP5952LC-1.8/NOPB datasheet
by Texas Instruments
