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PDF LDO57 Data sheet ( Hoja de datos )
| Número de pieza | LDO57 | |
| Descripción | IP Library: High Output Current/ Low power/ 400mA Low Dropout Voltage Regulator | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LDO57 (archivo pdf) en la parte inferior de esta página. Total 4 Páginas | ||
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LDO_57
IP Library: High Output Current, Low power,
400mA Low Dropout Voltage Regulator
PRODUCT PREVIEW
s DIGITAL BASEBAND REGULATOR
s VERY LOW DROPOUT VOLTAGE : 50mV
s HIGH OUTPUT CURRENT : 400mA
s LOW QUIESCENT CURRENT : 100µA
s HIGH PSRR : 60dB
s LOW OUTPUT VOLTAGE NOISE
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 Digital Baseband devices for cellular
phone.
Figure 2 : Typical Application Circuit
APPLICATION NOTE
An external capacitor (COUT = 4.7µF) with an
equivalent serial resistance (ESR) in the range
0.02 to 0.6Ω is used for regulator stability.
Figure 1 : Block Diagram
IN ?
PWRDWN ?
STDBY ?
VREF
? OUT
LDO_57
VIN
IN
?
OUT
?
VOUT
Power Down Mode
ON
OFF
→
→
Stand-by Mode
Stand-by Mode →
Active Mode →
PWRDWN
?
STDBY
?
LDO_57
GND
?
4.7µF
COUT
ESR
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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1 page | ||
| Páginas | Total 4 Páginas | |
| PDF Descargar | [ Datasheet LDO57.PDF ] | |
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