UR5595

MOS IC

UNISONICTECHNOLOGIESCO.,LTD

8 of 12

www.unisonic.com.tw

QW-R502-062,A

TYPICAL APPLICATION CIRCUITS(Cont.)

Figure 3 illustrate another application that the power rails are split when power dissipation or efficiency are

higher rail such as 2.5V, 3.3V or 5V. This allows the internal power dissipation to be lowered when sourcing current

Figure 3. Lower Power Dissipation SSTL-2 Implementation

output current at the downside of higher thermal dissipation. The power dissipation increasing problem must be

careful to prevent the junction temperature to exceed the maximum ranting. Because of this risk it is not

recommended to supply the output stage with a voltage higher than a nominal 3.3V rail.

Figure 4. SSTL-2 Implementation with higher voltage rails