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LDO59 Datasheet

  • LDO59

  • IP Library: Ultra Low Noise, High PSRR, Low Power, 20mA Low ...

  • 99.01KB

  • 4頁(yè)

  • STMICROELECTRONICS   STMICROELECTRONICS

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LDO_59
IP Library: Ultra Low Noise, High PSRR, Low Power,
20mA Low Dropout Voltage Regulator
PRODUCT PREVIEW
s
s
s
s
s
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s
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s
RF REGULATOR
VERY LOW DROPOUT VOLTAGE : 60mV
ULTRA LOW OUTPUT VOLTAGE NOISE
HIGH PSRR : 70dB
LOW QUIESCENT CURRENT : 70碌A(chǔ) FULL
LOAD
NO CURRENT IN POWER DOWN MODE
SHORT CIRCUIT PROTECTION
SMALL DECOUPLING CERAMIC CAPACITOR
MOS INPUT STAGE
APPLICATION NOTE
An external capacitor (C
OUT
= 1碌F typical) with an
equivalent serial resistance (ESR) in the range
0.02 to 0.6鈩?is used to ensure stability.
Figure 1 :
Block Diagram
IN
?
? OUT
PWRDWN
?
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 RF devices for cellular phone.
Figure 2 :
Typical Application Circuit
IN
OUT
LDO_59
V
REF
V
IN
?
?
V
OUT
Power Down Mode
PWRDWN
ON
1碌F
?
LDO_59
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.
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