UR5596

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

5 of 12

www.unisonic.com.tw

QW-R502-045,C

PIN DESCRIPTIONS

Input supply pins

temperature exceeds the thermal shutdown than the part will enter a shutdown state identical to the manual

eliminates the need for bypassing the two supply pins separately. The only limitation on input voltage selection is

than 3.3V to prevent the thermal limit from tripping because of excessive internal power dissipation.

The input pin used to create the internal reference voltage from a resistor divider of two internal 50kΩ resistors for

voltage tracks the DDR memory rails precisely without a large voltage drop from the power lines.

signals and preventing errors.

for the Northbridge chipset and memory. Since these inputs are typically extremely high impedance, there should be

located close to the pin to help with noise. This output remains active during the shutdown state and thermal

shutdown events for the suspend to RAM functionality.

voltage with the sinking and sourcing current capability. The UTC UR5596 is designed to handle peak transient

currents of up to ± 3A with a fast transient response. If a transient is expected to remain above the maximum

continuous current rating for a significant amount of time then the output capacitor size should be large enough to

prevent an excessive voltage drop.

Although UTC UR5596 can handle large transient output currents, but it can not handling these for long durations

since the limited thermal dissipation capability of SOP-8 package. If large currents are required for longer durations,

then must ensure the maximum junction temperature is not exceeded, otherwise, the maximum output current will be

degraded with heating. Proper thermal de-rating should always be used. While the temperature beyond the junction

hysteretic trigger point.