LDO51 Ver la hoja de datos (PDF) - STMicroelectronics
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LDO51 Datasheet PDF : 4 Pages
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LDO_51
IP Library: High PSRR, Low power,
80mA Low Dropout Voltage Regulator
PRODUCT PREVIEW
s ANALOG BASEBAND REGULATOR
s VERY LOW DROPOUT VOLTAGE : 50mV
s HIGH PSRR : 60dB
s LOW QUIESCENT CURRENT : 130µA
s LOW OUTPUT VOLTAGE NOISE
s NO CURRENT IN POWER DOWN MODE
s SHORT CIRCUIT PROTECTION
s SMALL DECOUPLING CERAMIC CAPACITOR
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 Analog and Mixed-signal devices for
cellular phone.
Figure 2 : Typical Application Circuit
APPLICATION NOTE
An external capacitor (COUT = 1µF) with an
equivalent serial resistance (ESR) in the range
0.02 to 0.6Ω is used for regulator stability.
Figure 1 : Block Diagram
IN ?
? OUT
PWRDWN ?
VREF
LDO_51
VIN
IN
?
OUT
?
VOUT
Power Down Mode
PWRDWN
?
ON
OFF
LDO_51
1µF
COUT
ESR
GND
?
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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