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LDO58 Просмотр технического описания (PDF) - STMicroelectronics

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LDO58 IP Library: Ultra Low Noise, Low power, 100mA Low Dropout Voltage Regulator ST-Microelectronics
STMicroelectronics ST-Microelectronics
LDO58 Datasheet PDF : 4 Pages
1 2 3 4
LDO_58
IP Library: Ultra Low Noise, Low power,
100mA Low Dropout Voltage Regulator
PRODUCT PREVIEW
s RF REGULATOR
s VERY LOW DROPOUT VOLTAGE : 50mV
s ULTRA LOW OUTPUT NOISE
s HIGH OUTPUT CURRENT : 100mA
s LOW QUIESCENT CURRENT : 110µA
s HIGH PSRR : 65dB
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.
Figure 2 : Typical Application Circuit
APPLICATION NOTE
An external capacitor (COUT = 1µF) with an
equivalent serial resistance (ESR) in the range
0.02 to 0.6is used for regulator stability.
Figure 1 : Block Diagram
IN ?
PWRDWN ?
STDBY ?
VREF
? OUT
LDO_58
VIN
IN
?
OUT
?
VOUT
Power Down Mode
ON
OFF
Stand-by Mode
Stand-by Mode
Active Mode
PWRDWN
?
STDBY
?
LDO_58
GND
?
1µF
COUT
ESR
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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