Conditions where reverse current can occur are outlined in this section, all of which can exceed the absolute

maximum rating of VOUT > VIN + 0.3V:

• If the device has a large COUT and the input supply collapses with little or no load current

• The output is biased when the input supply is not established

• The output is biased above the input supply

If reverse current flow is expected in the application, external protection must be used to protect the device. The

image below shows one approach of protecting the device.

Device

IN

OUT

GND

COUT

CIN

Schottky Diode

Internal Body Diode

Figure 6-6. Example Circuit for Reverse Current Protection Using a Schottky Diode

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TPS792

SLVS337E – MARCH 2001 – REVISED JANUARY 2025

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