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LDO52 Datasheet(PDF) 1 Page - STMicroelectronics

Part No. LDO52
Description  IP Library: High PSRR, Low Power, 70mA Low Dropout Voltage Regulator
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LDO52 Datasheet(HTML) 1 Page - STMicroelectronics

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June 2002
IP Library: High PSRR, Low Power,
70mA Low Dropout Voltage Regulator
s DIGITAL BASEBAND REGULATOR
s VERY LOW DROPOUT VOLTAGE : 50mV
s HIGH PSRR : 60dB
s LOW QUIESCENT CURRENT : 150
µA
s 1
µA STAND-BY MODE CURRENT
s NO CURRENT IN POWER DOWN MODE
s SHORT CIRCUIT PROTECTION
s SMALL DECOUPLING CERAMIC CAPACITOR
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 Digital (Memory, DSP/Microcontroller)
devices.
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_52
OUT
IN
PWRDWN
STDBY
Figure 2 : Typical Application Circuit
1
µF
ESR
VOUT
COUT
?
?
OUT
GND
?
?
?
VIN
IN
PWRDWN
Power Down Mode
OFF
ON
Stand-by Mode
STDBY
Active Mode
LDO_52
Stand-by Mode
LDO_52
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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