5 Pin Configuration and Functions

V

OUT

BYPASS

1

2

3

4

5

V

IN

GND

ON/OFF

Figure 5-1. DBV Package, 5-Pin SOT-23 (Top View)

Table 5-1. Pin Functions

PIN

TYPE

DESCRIPTION

NAME

NO.

BYPASS

4

I/O

BYPASS pin to achieve low noise performance. Connecting an external capacitor between

BYPASS pin and ground reduces reference voltage noise. See the Recommended

Operating Conditions section for more information.

GND

2

—

Ground

ON/OFF

3

I

Enable pin for the LDO. Driving the ON/OFF pin high enables the device. Driving this pin low

disables the device. High and low thresholds are listed in the Electrical Characteristics table.

Tie this pin to VIN if unused.

VIN

1

I

Input supply pin. Use a capacitor with a value of 1 µF or larger from this pin to ground. See

the Input and Output Capacitor Requirements section for more information.

VOUT

5

O

Output of the regulator. Use a capacitor with a value of 2.2 µF or larger from this pin to

ground.(1) See the Input and Output Capacitor Requirements section for more information.

(1)

The nominal output capacitance must be greater than 1 μF. Throughout this document, the nominal derating on these capacitors is

50%. Make sure that the effective capacitance at the pin is greater than 1 μF.

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LP2985

SLVS522Q – JULY 2004 – REVISED DECEMBER 2022

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