LD2985AM18R datasheet(15/21 Pages) STMICROELECTRONICS

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LD2985AM18R Datasheet(PDF) 15 Page - STMicroelectronics

Part #	LD2985AM18R

Description	Very low drop and low noise voltage regulator low ESR capacitors compatible, with inhibit function

PDF	21 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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15 / 21 page

LD2985Axx - LD2985Bxx

Application notes

15/21

6.6

Reverse current

The power transistor used in the LD2985 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 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 17.

Reverse current test circuit

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