AMS1117的datasheet中有关功耗的3处描述:
1 Power Dissipation Internally limited
2 Note 2: Line and Load regulation are guaranteed up to the maximum power dissipation of 1.2 W. Power dissipation is determined by the input/output differential and the output current. Guaranteed maximum power dissipation will not be available over the full input/output range.
3 The power dissipation of the AMS1117 is equal to:
P= ( Vin - Vout )( Iout )
我的电路中,Vin:5v,Vout:3.3v,Iout怎么估算从而估算出功耗呢? |