MP2611 – 2A, 1-CELL SWITCHING CHARGER FOR USB AND ADAPTER POWER

MP2611 Rev. 1.12

www.MonolithicPower.com

21

12/7/2012

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Input OVP Application

For MP2611, the maximum rating of input voltage

is only 7.5V. In order to prevent an unmatched

adapter from being connected to damage this

part, the input over-voltage protection (OVP) is

required. Figure 11 shows the application circuit

for the input OVP, where the OVP threshold can

be programmed via the resistor divider consist of

R4 and R5. For the given parameters below, the

OVP threshold is 6.2V and maximum input rating

is extended to 18V (Limited by the TLVH431).

Figure 11: AC Input Mode with Input OVP