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LDO517 Datasheet, PDF (1/4 Pages) STMicroelectronics – IP Library: Wide Range ESR Capacitor, Low Noise, 100mA Low Dropout Voltage Regulator | |||
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LDO_517
IP Library: Wide Range ESR Capacitor, Low Noise,
100mA Low Dropout Voltage Regulator
s AnyESR REGULATOR
s VERY COMMON OUTPUT DECOUPLING
CERAMIC CAPACITOR
s LOW CONSUMPTION : 250µA FULL LOAD
s VERY LOW NOISE : 30µV
s VERY LOW DROPOUT VOLTAGE : 50mV
s HIGH PSRR : 60dB
s STANDBY AND POWER DOWN MODE
s NO CURRENT IN POWER DOWN MODE
s SHORT CIRCUIT PROTECTION
TYPICAL APPLICATIONS
â Cellular and Cordless phones supplied by 1 cell
Lithium-ion battery / 3 cells Ni-MH or Ni-Cd
battery
â PDA (Personal Digital Assistant),
â Smart phone
â Portable equipment
â Supply for RF devices for cellular phone
Figure 2 : Typical Application Circuit
PRODUCT PREVIEW
APPLICATION NOTE
An external capacitor (COUT = 1µF) with an
equivalent serial resistance (ESR) up to 1⦠is
used for regulator stability.
Figure 1 : Block Diagram
IN ?
PWRDWN ?
STDBY ?
VREF
? OUT
LDO_517
VIN
IN
?
OUT
?
VOUT
Power Down Mode
ON
â
OFF
â
Stand-by Mode
Stand-by Mode â
Active Mode â
PWRDWN
?
LDO_517
STDBY
?
GND
?
1µF
ESR
COUT
June 2002
1/4
This is advance information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
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