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LDO518 Datasheet(PDF) 1 Page - STMicroelectronics

Part No. LDO518
Description  IP Library: Low Noise, High PSRR 100mA Low Dropout Voltage Regulator
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LDO518 Datasheet(HTML) 1 Page - STMicroelectronics

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June 2002
s ULTRA LOW POWER REGULATOR
s ULTRA LOW CONSUMPTION : 45µA FULL
LOAD
s VERY LOW NOISE : 30µV
s VERY LOW DROPOUT VOLTAGE : 50mV
s HIGH PSRR : 60dB
s SMALL DECOUPLING CERAMIC CAPACITOR
s NO CURRENT IN POWER DOWN MODE
s SHORT CIRCUIT PROTECTION
TYPICAL 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 = 2.2µF) with an
equivalent serial resistance (ESR) in the range of
0.02 to 0.6
Ω is used for regulator stability.
Figure 1 : Block Diagram
?
VREF
?
?
?
LDO_518
OUT
IN
PWRDWN
STDBY
Figure 2 : Typical Application Circuit
2.2
µF
ESR
VOUT
COUT
?
?
OUT
GND
?
?
?
VIN
IN
PWRDWN
Power Down Mode
OFF
ON
Stand-by Mode
STDBY
Active Mode
LDO_518
Stand-by Mode
LDO_518
This is advance information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
PRODUCT PREVIEW
IP Library: Low Noise, High PSRR
100mA Low Dropout Voltage Regulator


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