In smartphone applications, LDO and

protection devices are widely used in

several subsystems.

ST offers a complete portfolio of high-

performance low-dropout regulators with

state-of-the-art figures on the key merit

parameters, all fitting into the smallest

packages available. The ultrasmall,

high-performance LDOs are particularly

suitable for the latest generation of

portable devices, such as smartphones.

LD56050

DFN6 – 1.2 x 1.2

LD57100

Flip-Chip6 – 0.8 x 1.2

LD56100

DFN8 – 1.2 x 1.6

LD39130S

Flip-Chip4

DFN6 – 1.2 x 1.3

LD56020

Flip-Chip4

LD59030

DFN4 – 1 x 1

LDLN025

DFN4 – 1 x 1

Flip-Chip4

Sensor

Front camera

Rear camera

SD memory

Wi-Fi, GPS,

bluetooth

Noice sensitive loads

e.g. Audio Hi-Fi

LDO

Benefits

LDLN025

• Ultra Low Noise

• Very High PSRR LDOs for camera AVDD and RF

LD59030

• 300mA LDO ultra low VDROP

• Good cost-performance trade-off

LD57100

• 1A Ultra low dropout LDO with Bias for camera DVDD

LD56100

• 1 A very low dropout fast transient ultra-low noise

regulator

LD39130S

• 300 mA with very low quiescent

• Auto green mode function allows ultra low

consumption at light load

LD56050

• 500 mA ultra low VDROP with bias supply input

LD56020

• 200mA, low input voltage, low Iq, High PSRRR

The one-stop-shop LDO’s supplier addressing high mega pixels cameras

Portable devices are small integrated devices using ESD-sensitive ICs with thin lithography

technologies, in close contact with electrostatic charges that can develop on a human in low relative

humidity. The risk of ESD damage is therefore very high.

The complete ST protection and filtering range with integrated or standalone solutions offers design

flexibility while allowing space saving and high system immunity.

30

LDO and protections

in Smartphones