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PDF AIC1531 Data sheet ( Hoja de datos )
| Número de pieza | AIC1531 | |
| Descripción | 500mA Dual Linear Regulator | |
| Fabricantes | AIC | |
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AIC1531
500mA Dual Linear Regulator with Internal
Power Switch
n FEATURES
l Continuous 3.3V Output from Three Inputs.
l Complete Power Management Solution.
l VCC, VSBY Regulator Supplies 500mA Output.
l Built-in Hysteresis When Selecting Input Supplies.
l Integrated Switch has Very Low RDS(ON) 120mΩ
(typ.).
l Integrated Switch Supplies 500mA From VAUX .
l Output can be Forced Higher than Input (Off-State).
n APPLICATIONS
l Desktop Computers.
l PCI Adapter Cards with Wake-On-LAN.
l Network Interface Cards (NICs).
l Multi Power System.
l System with Standby Capabilities.
n DESCRIPTION
AIC1531 is a dual input regulator with VAUX
switch capable of delivering 3.3V/500mA
continuously. The output power is provided from
three independent input voltage sources on a
prioritized basis. Power is always taken in priority
using the following order VCC, VSBY, and VAUX .
The AIC1531 meets Intel’s “ Instantly Available ”
power requirements which follows the “Advanced
Configuration and Power Interface“ (ACPI)
standards. When either VCC or VSBY is present, the
device automatically enables the regulator and
produces a stable 3.3V output VOUT. When only
VAUX (3.3V) is present, the device provides a low
impedance direct connection (120mΩ typ.) from
VAUX to VOUT.
The AIC1531 also prevents excessive current from
flowing VOUT to either input voltage or ground
when the output voltage is higher than the input
voltage.
All the necessary control circuitry needed to
provide a smooth and automatic transition
between all the three supplies has been
incorporated. This allows both VCC and VSBY to be
dynamically switched without loss of output
voltage.
Analog Integrations Corporation 4F, 9 Industry E. 9th Rd, Science-Based Industrial Park, Hsinchu, Taiwan
TEL: 886-3-5772500
FAX: 886-3-5772510 www.analog.com.tw
DS-1531-00 022502
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1 page  
AIC1531
n TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
375mA
V SBY
VCC
VOUT
375mA
VSBY
VCC
VOUT
Fig. 7 VCC Power Up ( VSBY =5V)
VCC
Fig. 8 VCC Power down ( VSBY =5V)
VCC
VOUT
375mA
Fig. 9 VCC Power Up ( VAUX = 3.3V)
IOUT
5mA→500mA
VOUT
375mA
Fig. 10 VCC Power Down ( VAUX = 3.3V)
IOUT
500mA→5mA
VOUT
Fig. 11 VCC Load Transient Rising
VOUT
Fig. 12 VCC Load Transient Falling
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet AIC1531.PDF ] | |
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