AIC1532 Datasheet, PDF (1/4 Pages) Analog Intergrations Corporation – 500mA DUAL REGULATOR WITH VAUX DRIVE

ADVANCED INFORMATION
AIC1532
500mA DUAL REGULATOR WITH VAUX DRIVE
SPEC NO: DS-1532-P1 03/14/00
! ^FEATURES
" Continuous 3.3V Output from Three Inputs.
" Complete Power Management Solution.
" VCC, VSBY Regulator Supplies 500mA Output.
" Built-in Hysteresis When Selecting Input Supplies.
" Drive Control Signal for External VAUX Switch.
" Output can be Forced Higher than Input (Off-State).
! ^APPLICATIONS
" Desktop Computers.
" PCI Adapter Cards with Wake-On-LAN.
" Network Interface Cards (NICs).
" Multi Power System.
" System with Standby Capabilities.
! ^{TYPICAL APPLICATION CIRCUIT}
! ^DESCRIPTION
AIC1532 is a dual input regulator with V_AUX drive
control 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 V_CC, V_SBY, and V_AUX .
AIC1532 meets Intel’s “ Instantly Available ” power
requirements which follows the “Advanced
Configuration and Power Interface“ (ACPI)
standards. When either V_CC 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 drive control output will
turn-on an external PMOS switch from an auxiliary
3.3V supply V_AUX to V_OUT.
The IC also prevents excessive current from flowing
V_OUT to either input voltage or ground when the
output voltage is bigger 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 V_CC and V_SBY to be dynamically switched
without loss of output voltage.
! ^{ORDERING INFORMATION}
AIC1532 CX
PACKAGE TYPE
N: PLASTIC DIP
S: SMALL OUTLINE
ORDER NUMBER
AIC1532CN
AIC1532CN
(PLASTIC DIP)
AIC1532CS
AIC1532CS
(PLASTIC SO)
PIN CONFIGURATION
TOP VIEW
VSBY 1
VCC 2
VOUT 3
RDIVE 4
8 ^GND
7 ^GND
6 ^GND
5 ^GND
ANALOG INTEGRATIONS CORPORATION
www.analog.com.tw
4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. TEL: [phone] FAX:[phone]
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