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LDO51 Datasheet

  • LDO51

  • IP Library: High PSRR, Low power, 80mA Low Dropout Voltage R...

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  • STMICROELECTRONICS   STMICROELECTRONICS

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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 : 130碌A(chǔ)
s
LOW OUTPUT VOLTAGE NOISE
s
NO CURRENT IN POWER DOWN MODE
s
SHORT CIRCUIT PROTECTION
s
SMALL DECOUPLING CERAMIC CAPACITOR
TYPICAL APPLICATIONS
鈥?Cellular and Cordless phones supplied by 1 cell
Lithium-ion battery / 3 cells Ni-MH or Ni-Cd
battery.
鈥?PDA (Personal Digital Assistant), Smart phone.
鈥?Portable equipment.
鈥?Supply for Analog and Mixed-signal devices for
cellular phone.
Figure 2 :
Typical Application Circuit
V
IN
IN
APPLICATION NOTE
An external capacitor (C
OUT
= 1碌F) with an
equivalent serial resistance (ESR) in the range
0.02 to 0.6鈩?is used for regulator stability.
Figure 1 :
Block Diagram
IN
?
? OUT
PWRDWN
?
V
REF
LDO_51
?
?
OUT
V
OUT
Power Down Mode
PWRDWN
ON
1碌F
?
LDO_51
ESR
C
OUT
OFF
?
GND
June 2002
This is advance information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
1/4

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