Calculadora de Aquecimento do Regulador de Tensão — Formula
## Linear Regulator Heat
### Formulas
**P = (V_in - V_out) x I_load**
**T_junction = T_ambient + P x Theta_JA**
Keep junction temperature below the maximum rating (usually 125-150C). Use a heat sink to reduce thermal resistance.
### Formulas
**P = (V_in - V_out) x I_load**
**T_junction = T_ambient + P x Theta_JA**
Keep junction temperature below the maximum rating (usually 125-150C). Use a heat sink to reduce thermal resistance.
Exemplo Resolvido
12 V to 5 V regulator at 0.5 A, 50 C/W thermal resistance, 25C ambient.
- P = (12 - 5) x 0.5 = 3.5 W
- T_rise = 3.5 x 50 = 175C
- T_junction = 25 + 175 = 200C (exceeds limits!)