LD2980ABM50TR datasheet(15/23 Pages) STMICROELECTRONICS | Ultra low drop voltage regulators compatible with low ESR inhibit output capacitors

Part #	LD2980ABM50TR

Description	Ultra low drop voltage regulators compatible with low ESR inhibit output capacitors

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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15 / 23 page

LD2980ABxx - LD2980Cxx

Application notes

15/23

7.6

Reverse current

The power transistor used in the LD2980 has not an inherent diode connected between the

regulator input and output. If the output is forced above the input, no current will flow from

the output to the input across the series pass transistor. When a VREV voltage is applied on

the output, the reverse current measured, according to the test circuit in Figure 22, flows to

the GND across the two feedback resistors. This current typical value is 160 µA. R1 and R2

resistors are implanted type; typical values are, respectively, 42.6 k

Ω and 51.150 kΩ.

Figure 22.

Reverse current test circuit

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