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Maximum output current of the regulator (based on junction temperature and thermal resistance)

Author: kuni3075Executions: 476
TOP/Shared Formulas (Engineering)/Electrical & Circuits

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Calculate the current output by the regulator based on junction temperature and thermal resistance
Power loss P = (Tj - Ta) / Θ
Current Io = P / (Vin - Vo)
Vin: Input Voltage
V
Vo: Output Voltage
V
Ta: Ambient temperature of the circuit
℃
Tj: Junction temperature
℃
Θ: Thermal resistance
℃
Io: Maximum output current A

https://fscdn.rohm.com/jp/products/databook/applinote/ic/power/linear_regulator/three_terminal_heatsink_appli-j.pdf

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