LDO59 datasheet(1/4 Pages) STMICROELECTRONICS

Teilenummer	LDO59

Bauteilbeschribung	IP Library: Ultra Low Noise, High PSRR, Low Power, 20mA Low Dropout Voltage Regulator

PDF	4 Pages

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Hersteller	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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June 2002

IP Library: Ultra Low Noise, High PSRR, Low Power,

20mA Low Dropout Voltage Regulator

s RF REGULATOR

s VERY LOW DROPOUT VOLTAGE : 60mV

s ULTRA LOW OUTPUT VOLTAGE NOISE

s HIGH PSRR : 70dB

s LOW QUIESCENT CURRENT : 70

µA FULL

LOAD

s NO CURRENT IN POWER DOWN MODE

s SHORT CIRCUIT PROTECTION

s SMALL DECOUPLING CERAMIC CAPACITOR

s MOS INPUT STAGE

APPLICATIONS

– Cellular and Cordless phones supplied by 1 cell

Lithium-ion battery / 3 cells Ni-MH or Ni-Cd

battery.

– PDA (Personal Digital Assistant), Smart phone.

– Portable equipment.

– Supply for RF devices for cellular phone.

APPLICATION NOTE

An external capacitor (COUT = 1µF typical) with an

equivalent serial resistance (ESR) in the range

0.02 to 0.6

Ω is used to ensure stability.

Figure 1 : Block Diagram

?

VREF

?

LDO_59

OUT

IN

PWRDWN

Figure 2 : Typical Application Circuit

1

µF

ESR

VOUT

COUT

?

OUT

GND

?

VIN

IN

Power Down Mode

OFF

ON

LDO_59

PWRDWN

LDO_59

This is advance information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

PRODUCT PREVIEW

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