MP62160/MP62161 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH

MP62160_MP62161 Rev. 0.9

www.MonolithicPower.com

8

7/8/2010

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Thermal Protection

The purpose of thermal protection is to prevent

damage in the IC by allowing exceptive current to

flow

and

heating

the

junction.

The

die

temperature is internally monitored until the

thermal limit is reached. Once this temperature is

reached, the switch will turn off and allow the

chip to cool. The switch has a built-in hysteresis.

Under-voltage Lockout (UVLO)

This circuit is used to monitor the input voltage to

ensure that the MP62160/MP62161 is operating

correctly.

This UVLO circuit also ensures that is no

operation until the input voltage reaches the

minimum spec.

Enable

The logic pin disables the switch to reduce

overall supply current .Once the EN pin reaches

logic enable threshold, the MP62160/MP62161 is

enabled.

Output Discharge

The part involves a discharge function that

provides a resistive discharge path for the

external output capacitor. The function will be

active when the part is disabled (Input voltage is

under UVLO or enable is deasserted) and it will

be done in a very limited time.