SPX3819

500mA Low-Noise LDO Voltage Regulator

© 2013-2016 Exar Corporation

3/12

Rev. 2.0.3

Parameter

Min.

Typ.

Max.

Units

Conditions

800

mA

950

•

300

(10Hz – 100kHz)

40

Input Voltage Level Logic Low

0.4

V

OFF

Input Voltage Level Logic High

2

V

ON

ENABLE Input Current

0.01

2

µA

VIL ≤ 0.4V

VIH ≥ 2.0V

3

20

Note 2: Not applicable to output voltage 2V or less.

PIN ASSIGNMENT

Fig. 2: SPX3819 Pin Assignment

PIN DESCRIPTION

Name

Pin #

nSOIC

Pin #

DFN

Pin #

SOT-23

Description

VIN

2

3

1

Supply Input

GND

5, 6, 7, 8

7

2

Ground

VOUT

3

5

5

Regulator Output

EN

1

1

3

Enable(input). CMOS compatible control input. Logic high – enable;

logic low or open = shutdown

ADJ/BYP

4

8

4

Adjust(input). Feedback input. Connect to resistive voltage-divider

network

NC

-

2, 4, 6

-

No Connect