LP38693

-ADJ

IN

OUT

GND

1 PF

*

1 PF

*

R1

R2

EN

ADJ

LP38691

-ADJ

IN

OUT

GND

1 PF

*

1 PF

*

R1

R2

ADJ

13

LP38691-ADJ, LP38693-ADJ, LP38691-ADJ-Q1, LP38693-ADJ-Q1

www.ti.com

SNVS324K – JANUARY 2005 – REVISED JANUARY 2016

Product Folder Links: LP38691-ADJ LP38693-ADJ LP38691-ADJ-Q1 LP38693-ADJ-Q1

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Copyright © 2005–2016, Texas Instruments Incorporated

8 Application and Implementation

NOTE

Information in the following applications sections is not part of the TI component

specification, and TI does not warrant its accuracy or completeness. TI’s customers are

responsible for determining suitability of components for their purposes. Customers should

validate and test their design implementation to confirm system functionality.

8.1 Application Information

The LP3869x-ADJ can provide 500 mA output current with 2.7 V to 10 V input. Adjustable output voltage in the

range of 1.25 V to 9 V. LP3869x-ADJ is stable with a 1-

μF ceramic output capacitor. Typical output noise is

0.7

8.2 Typical Applications

* Minimum value required for stability

Figure 28. LP38691-ADJ Typical Application

* Minimum value required for stability

Figure 29. LP38693-ADJ Typical Application

8.2.1 Design Requirements

For typical LDO CMOS linear regulators , use the parameters listed in Table 1.

Table 1. Design Parameters

DESIGN PARAMETERS

EXAMPLE VALUE

Input voltage range

2.7 V to 10 V

Output range

Adjustable

Output current

500 mA (maximum)

Output capacitor range

1 µF