Thermal resistance, Junction−to−Ambient(ϕ JA) of NCP1117 voltage regulator is 160 °C/W and thermal resistance of AMS1117 voltage regulator is 90 °C/W. Remaining specifications are almost same for both regulators. Which of them is preferable? What is the role of thermal resistance while choosing a voltage-regulator?
Voltage regulator selction based on Junction−to−Ambient thermal resisatnce
Sabiha
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