The recommended PCB layout for the ADP5171 involves placing the input capacitors (CIN) close to the VIN pin, and the output capacitors (COUT) close to the VOUT pin. Additionally, it is recommended to use a solid ground plane and to minimize the loop area of the input and output traces to reduce EMI.
The selection of input and output capacitors for the ADP5171 depends on the specific application requirements. In general, low-ESR capacitors with a high ripple current rating are recommended. The input capacitor should be able to handle the input voltage and current, while the output capacitor should be able to handle the output voltage and current. A good starting point is to use ceramic capacitors with a capacitance value of 10uF to 22uF for both input and output.
The maximum ambient temperature range for the ADP5171 is -40°C to +85°C. However, the device can operate up to +105°C with derating. It is recommended to check the thermal design and ensure that the device is operated within the specified temperature range to ensure reliability and performance.
To ensure the stability of the ADP5171 output voltage, it is recommended to use a minimum output capacitance of 10uF and to ensure that the output voltage is within the specified range. Additionally, the input voltage should be stable and within the specified range, and the device should be operated within the specified temperature range. It is also recommended to use a soft-start circuit to reduce the inrush current during startup.
The typical startup time for the ADP5171 is around 1ms to 2ms, depending on the input voltage and output capacitance. However, this time can be affected by the soft-start circuit and the input voltage slew rate. It is recommended to check the startup time in the specific application to ensure that it meets the requirements.
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ADP5171 Overview
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