AIC1531

www.DataSheet4U.com AIC1531 500mA Dual Linear Regulator with Internal Power Switch n FEATURES l l l l l 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) Continuous 3.3V Output from Three Inputs. Complete Power Management Solution. VCC, VSBY Regulator Supplies 500mA Output. Built-in Hysteresis When Selecting Input Supplies. Integrated Switch has Very Low RDS(ON) 120mΩ (typ.). Integrated Switch Supplies 500mA From VAUX . Output can be Forced Higher than Input (Off-State). l l n APPLICATIONS l l l l l Desktop Computers. PCI Adapter Cards with Wake-On-LAN. Network Interface Cards (NICs). Multi Power System. System with Standby Capabilities. standards. When either V CC or V SBY 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 V OUT to either input voltage or ground when the output voltage is higher than the input voltage. All the necessary control circuitry needed to provid...