AIC1532CS

ADVANCED INFORMATION AIC1532 500mA DUAL REGULATOR WITH VAUX DRIVE SPEC NO: DS-1532-P1 03/14/00 ! FEATURES " " " " " " ! DESCRIPTION AIC1532 is a dual input regulator with VAUX 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 VCC, VSBY, and VAUX . AIC1532 meets Intel’s “ Instantly Available ” power requirements Configuration which and follows Power the “Advanced (ACPI) Interface“ 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. 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 drive control output will turn-on an external PMOS switch from an auxiliary 3.3V supply VAUX to VOUT. The IC also prevents excessive current from flowing VOUT 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 VCC and VSBY to be dynamically switched without loss of output voltage. ! TYPICAL APPLICATION CIRCUIT ! 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 VCC VOUT RDIVE 1 2 3 4 8 GND 7 GND 6 GND 5 GND ANALOG INTEGRATIONS CORPORATION 4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. www.analog.com.tw TEL: (8863)577-2500 FAX:(8863)577-2510 1 AIC1532 500mA DUAL REGULATOR WITH VAUX DRIVE SPEC NO: DS-1532-P1 03/14/00 ! ABSOLUTE MAXIMUM RATINGS VCC, VSBY Input Voltage ......................................................................................................... 7.0V VAUX Input Voltage................................................................................................................... 5.0V VOUT Onput Voltage................................................................................................................. 5.0V Operating Temperature Range................................................................................... -40°C~85°C Storage Temperature Range .................................................................................. -65°C ~ 150°C ! ELECTRICAL CHARACTERISTICS (VIN= 5V, Ta=25°C, unless otherwise specified.) PARAMETERS Regulated Output Voltage Regulated Output Current Output Voltage Load Regulation VCC selected ILOAD=50mA ~ 500mA VSBY selected ILOAD=50mA ~ 500mA Output Voltage Line Regulation VCC Select Voltage VCC Deselect Voltage Hyteresis Voltage VCC Supply Current VCC selected, ILOAD=0mA VCCDES > VCC > VOUT VSBY Supply Current VCC Pin Reverse Leakage VSBY Pin Reverse Leakage Ground Current VSBY selected, ILOAD=0mA VCC = 0V , VSBY = 5V VCC = 5V , VSBY = 0V VCC/SBY=5V , ILOAD = 0mA VCC/SBY=5V , ILOAD = 500mA Short Circuit Current VDRIVE High Voltage Drive delay VCC/SBY=5V, VOUT=0V VCC or VSBY selected Drive High Delay Drive Low Delay Drive Pin Current limit VDRIVE=1V,VCC=5V 0.5 3.75 3.90 4.50 4.10 0.40 1.50 0.10 1.50 10 10 1.50 3.00 2000 4.00 5.0 0.5 6.0 25.0 mA 3.00 0.20 3.00 100 10 3.00 6.00 mA µA mA 4.60 V VCC=4.5V~5.5V, ILOAD=5mA 2 mV 20 mV CONDITIONS 0mA < ILOAD < 500mA MIN. 3.135 500 TYP. 3.300 MAX. 3.465 UNIT V mA 20 mA mA V µS ANALOG INTEGRATIONS CORPORATION 4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. www.analog.com.tw TEL: (8863)577-2500 FAX:(8863)577-2510 2 AIC1532 500mA DUAL REGULATOR WITH VAUX DRIVE SPEC NO: DS-1532-P1 03/14/00 ! BLOCK DIAGRAM ! PIN DESCRIPTION PIN 1: VSBY - Standby supply voltage (5V) input for 3.3V regulator when VCC falls below 4.3V. Some NICs that operate in “ Wake-On-LAN” mode get a 5V standby through a cable that connects directly to a specific header on the Motherboard. PIN 2: VCC - Primary supply voltage (5V) input for 3.3V regulator. PIN 3: VOUT - 3.3V regulated output voltage when either VCC or VSBY is present. When only VAUX (3.3V) is present , VOUT voltage comes from VAUX through an internal low impedance switch. PIN 4: DRIVE - Signal for controlling external auxiliary switch .Active Low when internal regulator is disabled . PIN 5-8: GND - Negative reference for all voltages. ANALOG INTEGRATIONS CORPORATION 4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. www.analog.com.tw TEL: (8863)577-2500 FAX:(8863)577-2510 3 AIC1532 500mA DUAL REGULATOR WITH AUXILIARY SWITCH SPEC NO: DS-1532-P1 03/14/00 ! PHYSICAL DIMENSIONS " 8 LEAD PLASTIC SO (unit: mm) D SYMBOL A H E MIN 1.35 0.10 0.33 0.19 4.80 3.80 MAX 1.75 0.25 0.51 0.25 5.00 4.00 A1 B C e A C A1 D E e H L 1.27(TYP) 5.80 0.40 6.20 1.27 B L " 8 LEAD PLASTIC DIP (unit: mm) D SYMBOL A1 E1 MIN 0.381 2.92 0.35 0.20 9.01 7.62 6.09 MAX — 4.96 0.56 0.36 10.16 8.26 7.12 A2 b E C D E C A2 A1 L E1 eB b e e eB L — 2.54 (TYP) 10.92 3.81 2.92 ANALOG INTEGRATIONS CORPORATION 4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. www.analog.com.tw TEL: (8863)577-2500 FAX:(8863)577-2510 4