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PDF AAT1205 Data sheet ( Hoja de datos )
| Número de pieza | AAT1205 | |
| Descripción | MULTI-INPUT LOW-DROPOUT REGULATOR | |
| Fabricantes | AAT | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AAT1205 (archivo pdf) en la parte inferior de esta página. Total 21 Páginas | ||
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Advanced Analog Technology, Inc.
Details are subject to change without notice
AAT1205
400-mA MULTI-INPUT LOW-DROPOUT REGULATOR WITH DUAL
OUTPUT POWER MANAGEMENT
Features
Description
z Complete Power Management
The AAT1205 is a multi-input low-dropout
z Automatic Input Voltage Selection
regulator (LDO) specially designed for LAN cards.
z Input Voltage Source Detector With
Hysteresis
It provides advanced dual constant output supply
3.3V & 2.5V at the output capable of driving a
z 400-mA Load Current Capability With
VCC50 VSB50 or AUX33 Input Source
400-mA load. The output (OUT25) can be
disabled by connecting EN25 pin to GND.
z Integrated Low rDS(on) Switch
The AAT1205 is equipped with dual regulated
z Dual Regulated Output 3.3V fixed & 2.5V
fixed
power output for systems with multiple input
sources and require dual constant voltage source
z Output Short Circuit Protection (SCP)
with a low-dropout voltage. This is an intelligent
www.DataSheet4U.com
power source selection device with a low-dropout
Pin Configuration
regulator for either VCC50 or VSB50 inputs, and
a low-resistance bypass switch for the AUX33
input.
The AAT1205 allows transitions to progress
smoothly from one input supply to another without
generating a glitch outside of the specified range
of 3.3V & 2.5V output. Furthermore, this device
has an incorporated reverse-blocking scheme to
prevent excessive leakage from the input terminals
in the event that the output voltage is greater than
the input voltage.
The input voltage is prioritized in the following
order: VCC50, VSB50, AUX33.
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– Advanced Analog Technology, Inc. –
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Advanced Analog Technology, Inc.
Function Block
AAT1205
VCC50
3.3V +
-
+ 3.3V
-
VSB50
VCC50
Detector
Control
VSB50
Detector
AUX33
GND
Low on Resistance
Over
Temperature
Protection
2.5V +
-
OUT33
EN25
OUT25
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– Advanced Analog Technology, Inc. –
Page 5 of 21
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Advanced Analog Technology, Inc.
Typical Characteristics
AAT1205
Fig.11. 3.3V VCC50 Power Down (VSB=5V)
Fig. 12. 2.5V VCC50 Power Down (VSB=5V)
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– Advanced Analog Technology, Inc. –
Page 11 of 21
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11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet AAT1205.PDF ] | |
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