AIC1532 ADVANCED INFORMATION 500mA DUAL REGULATOR WITH VAUX DRIVE SPEC NO: DS-1532-P1 03/14/00 ! DESCRIPTION ! FEATURES " " " " " " Continuous 3.3V Output from Three Inputs. Complete Power Management Solution. AIC1532 is a dual input regulator with VAUX drive control 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). " " " " 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 . ! APPLICATIONS " capable AIC1532 meets Intel’s “ Instantly Available ” power Desktop Computers. PCI Adapter Cards with Wake-On-LAN. Network Interface Cards (NICs). Multi Power System. System with Standby Capabilities. requirements which Configuration and follows Power the “Advanced 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 ! TYPICAL APPLICATION CIRCUIT 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. ! ORDERING INFORMATION ORDER NUMBER AIC1532 CX PACKAGE TYPE N: PLASTIC DIP S: SMALL OUTLINE AIC1532CN AIC1532CN (PLASTIC DIP) AIC1532CS AIC1532CS (PLASTIC SO) PIN CONFIGURATION TOP VIEW VSBY 1 VCC 2 8 GND 7 GND VOUT 3 6 GND RDIVE 4 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: (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 CONDITIONS MIN. TYP. MAX. UNIT 0mA < ILOAD < 500mA 3.135 3.300 3.465 V 500 Regulated Output Current Output Voltage Load VCC selected Regulation ILOAD=50mA ~ 500mA mA 20 20 VSBY selected mV ILOAD=50mA ~ 500mA Output Voltage Line VCC=4.5V~5.5V, ILOAD=5mA 2 mV Regulation 4.50 VCC Select Voltage 3.90 VCC Deselect Voltage 4.60 V 4.10 0.40 Hyteresis Voltage VCC selected, ILOAD=0mA 1.50 3.00 VCCDES > VCC > VOUT 0.10 0.20 VSBY Supply Current VSBY selected, ILOAD=0mA 1.50 3.00 VCC Pin Reverse Leakage VCC = 0V , VSBY = 5V 10 100 VSBY Pin Reverse Leakage VCC = 5V , VSBY = 0V 10 10 Ground Current VCC/SBY=5V , ILOAD = 0mA 1.50 3.00 VCC/SBY=5V , ILOAD = 500mA 3.00 6.00 Short Circuit Current VCC/SBY=5V, VOUT=0V 2000 mA VDRIVE High Voltage VCC or VSBY selected 4.00 V Drive delay Drive High Delay 5.0 µS Drive Low Delay 0.5 VCC Supply Current Drive Pin Current limit VDRIVE=1V,VCC=5V 3.75 0.5 6.0 25.0 ANALOG INTEGRATIONS CORPORATION www.analog.com.tw 4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. TEL: (8863)577-2500 FAX:(8863)577-2510 mA mA µA mA mA 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 www.analog.com.tw 4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. 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 MIN MAX A 1.35 1.75 A1 0.10 0.25 B 0.33 0.51 C 0.19 0.25 D 4.80 5.00 E 3.80 4.00 H E e A e A1 C B L 1.27(TYP) H 5.80 6.20 L 0.40 1.27 " 8 LEAD PLASTIC DIP (unit: mm) D E1 E A2 A1 MIN MAX A1 0.381 — A2 2.92 4.96 b 0.35 0.56 C 0.20 0.36 D 9.01 10.16 E 7.62 8.26 E1 6.09 7.12 C L eB b SYMBOL e e 2.54 (TYP) eB — 10.92 L 2.92 3.81 ANALOG INTEGRATIONS CORPORATION www.analog.com.tw 4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. TEL: (8863)577-2500 FAX:(8863)577-2510 4