AS3715 datasheet(29/160 Pages) AMSCO

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ams Datasheet, Confidential

Page 29

[v1-00] 2014-Sep-10

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AS3715 − Detailed Description – Power Management Functions

Figure 28:

LDO External Components

LDO External Components: Shows the external component parameter of the linear regulators.

Universal IO LDO Regulators

Description

6 universal IO range LDOs offer a wide input (1.8V to 5.5V ) as

well as a wide output (0.8 to 3.3V) voltage range to be used for

general purpose peripheral supply

Up to 300mA possible output currents are offered with good

noise and regulation performance and very low quiescent

current even suitable for stand-by power supply.

LDO7 & 8 offer in addition a load switch function, if the lowest

possible drop-out without regulation is needed.

Figure 29:

Universal IO LDO Block Diagram

Universal IO LDO Block Diagram: Shows the internal structure of the universal IO PMOS linear regulators.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

COUT_LDO1;2

Output capacitor

Ceramic X5R or X7R

ldoX_limit = 0

μF

Ceramic X5R or X7R

ldoX_limit =1

μF

CVIN_LDO12

Input capacitor

Ceramic X5R or X7R

μF

VIN_LDOx

LDOx

Er ror

Amplifier

Vr ef

1.8V or 0.8V

low noise

CVIN_LDOx

COUT_LDOx

PMOS

Power

Device

VSS_LDOx

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