IN

OUT

GND

EN

PG

LP5912

NC

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20

LP5912

SNVSA77B – DECEMBER 2015 – REVISED JUNE 2016

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Copyright © 2015–2016, Texas Instruments Incorporated

9 Applications 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 must

validate and test their design implementation to confirm system functionality.

9.1 Application Information

The LP5912 is designed to meet the requirements of RF and analog circuits, by providing low noise, high PSRR,

low quiescent current, and low line or load transient response. The device offers excellent noise performance

without the need for a noise bypass capacitor and is stable with input and output capacitors with a value of 1

μF.

The device delivers this performance in an industry standard WSON package, which for this device is specified

9.2 Typical Application

Figure 54 shows the typical application circuit for the LP5912. Input and output capacitances may need to be

increased above the 1-

μF minimum for some applications.

Figure 54. LP5912 Typical Application

9.2.1 Design Requirements

For typical RF linear regulator applications, use the parameters listed in Table 1.

Table 1. Design Parameters

DESIGN PARAMETER

EXAMPLE VALUE

Input voltage

1.6 to 6.5 V

Output voltage

0.8 to 5.5 V

Output current

500 mA

Output capacitor

1 to 10 µF

Input/output capacitor ESR range

5 m

Ω to 500 mΩ