LM3464, LM3464A

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SNVS652F – APRIL 2010 – REVISED MAY 2013

Figure 26. Additional Voltage Clamping Circuits for VRAIL(peak) > 80V/95V (LM3464/64A)

APPLICATIONS WITH HIGH RAIL VOLTAGE

The normal operation voltage of the LM3464 and LM3464A are rated to 80V and 95V respectively, applying

voltage over the operation voltage limit to the LM3464/64A can damage the device permanently. In applications

that the rail voltage is higher than the operation voltage limited of the device (80V for LM3464, 95V for

LM3464A), voltage clamping circuits must be added externally to ensure the voltage limits of all the pins of the

LM3464/64A are not violated. Figure 26 shows a typical application circuit with 150V peak rail voltage.

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