AIC1729 ADVANCE INFORMATION 400mA LOW DROPOUT LINEAR REGULATOR WITH VOLTAGE DETECTOR FUNCTION SPEC NO: DS-1729-P1 04/27/00 ! FEATURES " " " " Guaranteed 400mA Output Current for VOUT1 and VOUT2. Low Ground Current at 100A. " 2% Accuracy Output Voltage of VOUT2. Current Limit Function. Built in Voltage Detector " Shutdown Control for VOUT1 and VOUT2 " " ! Including MOSFET for VOUT 1, LDO for VOUT2, voltage detector, and shutdown control Low Dropout Voltage of 650mV(Typ.) at 400mA Output Current (VOUT2). APPLICATIONS " Voltage Regulator for DVD-ROM and CD-ROM Drivers. ! DESCRIPTION The AIC1729 is a low dropout linear regulator with voltage detection function. It can be divided into 5 main function blocks, including MOSFET for VOUT1, VOUT2 ,voltage detector, and LDO for two shutdown controls. Voltage detector can be use to detect Vcc. The detecting voltage of the voltage detector is from 2.0V to 4.5V with 0.1V step. And the output (DOUT) of detecting voltage for Vcc with delay time adjustment function to indicate VCC low. User only adds one external capacitor to finish it. When VCC pin is under the set detection voltage. DOUT pin is logic low. Vou1 is controlled by SD1 pin. When SD1 is logic high, the internal MOSFET for VOUT1 will be switched off, vice versa. The LDO output voltage (VOUT2) is from 2.0V to 4.5V with 0.1V step for different application. It is also controlled by SD2 pin. When SD2 is logic high, the internal LDO for VOUT2 will be shutdown, vice versa. The superior characteristics of the AIC1729 include very low dropout voltage, and 2% accuracy output voltage. Typical ground current remains 100A, from no load to maximum loading conditions. Dropout voltage of VOUT2 is 650mV at 400mA output current. Output current limiting is provided at VOUT1 and VOUT2. AIC1729 comes in the popular SO8 package. 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 AIC1729 400mA LOW DROPOUT LINEAR REGULATOR WITH VOLTAGE DETECTOR FUNCTION SPEC NO: DS-1729-P1 04/27/00 ! TYPICAL APPLICATION CIRCUIT ! ORDERING INFORMATION AIC1729-AA BBCX ORDER NUMBER PACKAGE TYPE N: PLASTIC DIP S: SMALL OUTLINE LDO OUTPUT VOLTAGE 20: 2.0V : : 45: 4.5V AIC1729CN (PLASTIC DIP) AIC1729CS (PLASTIC SO) PIN CONFIGURATION TOP VIEW VCC 1 8 VOUT1 CD 2 7 SD1 3 6 4 5 VOUT2 SD2 DOUT GND VOLTAGE DETECTOR VOLTAGE 20: 2.0V : : 45: 4.5V *LDO Output Voltage and Voltage Detector voltage with every 0.1V a Step. ! ABSOLUTE MAXIMUM RATINGS Input Supply Voltage ................................................................................... -0.3~8V Operating Junction Temperature Range ................................................. -40C~ 85C Storage Temperature Range ............................................................... -65C~150C Thermal Resistance JA SOIC Package ............................................................... 100C/W SOIC Package(with 3 square inches of Copper) ................ 90C/W 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 2 AIC1729 400mA LOW DROPOUT LINEAR REGULATOR WITH VOLTAGE DETECTOR FUNCTION SPEC NO: DS-1729-P1 04/27/00 ! ELECTRICAL CHARACTERISTICS (Ta=25C, VIN=5.0V, IOUT1=IOUT2 =400mA, SD1=SD2=Low unless otherwise specified.) PARAMETER Ground Current Output Voltage Temperature Coefficiency TEST CONDITIONS MIN. Io=0.1mA~400mA Vin = 4.0V~8.0V (Note 1) TYP. MAX. UNIT 100 A 100 PPM/C 370 m 650 mA 100 1000 0.8 S S V VSET 1.02 10 50 V mV mV Vout1 Output MOSFET Resistance Current Limit (Note 3) Output Turn-on Rise Delay Output Turn-on Rise Time SD1 Pin Voltage VSD=Logic"0" VSD=Logic"1" 2.4 Vout2 ( 2.0V ~ 4.5V With 0.1V Step ) LDO Output Voltage Line Regulation Load Regulation (Note 2) Current Limit (Note 3) Dropout Voltage (Note 4) SD2 Pin Voltage No Load IL=1mA,VIN=4.0V~8.0V VIN=5V,IL=0.1mA~400mA VSET 0.98 VVSET 3 20 650 mA IL=0.1mA 0.2 10 mV IL=400mA 650 800 0.8 V VSD=Logic"0" 2.4 VSD=Logic"1" Voltage Detector ( 2.0V ~ 4.5V with 0.1V Step ) VDSET V Detect Voltage(VDET) VDSET 0.98 VDSET 1.02 V Detect Threshold VDET 1.05 Hysteresis 0.6 Vdout When VDET is Detected 1.65 V When VDET is not Detected Delay Time CD Pin Open 1 mS Note 1: Guaranteed by design. Note 2: Regulation is measured at constant junction temperature, using pulse testing with a low ON time. Note 3: Current limit is measured by pulsing a short time. Note 4: Dropout voltage is defined as the input to output differential at which the output voltage drops 100mV below the value measured with a 1V differential. 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 AIC1729 400mA LOW DROPOUT LINEAR REGULATOR WITH VOLTAGE DETECTOR FUNCTION SPEC NO: DS-1729-P1 04/27/00 ! BLOCK DIAGRAM ! PIN DESCRIPTION PIN 1: VCC- This pin is the main input supply for the IC, normally 5V PIN 5: SD2- VOUT2 shutdown pin. Logic high input for disabling LDO output. PIN 2: CD- PIN 6: VOUT2- This pin is 3.3V LDO voltage output This pin is to determine delay time by attaching a capacitor PIN 3: DOUT- This pin is voltage detector output, pulled low when Din detected PIN 4: GND- IC ground pin ! PIN 7: SD1- VOUT1 shutdown pin. Logic high input for disabling the internal MOS Switch. PIN 8: VOUT1-This pin is the voltage output which is connected to Vcc directly via internal MOSFET switch, normally 5V PHYSICAL DIMENSIONS " 8 LEAD PLASTIC SO (unit: mm) D SYMBOL A A1 B C D E e H L H E e A MIN MAX 1.35 1.75 0.10 0.25 0.33 0.51 0.19 0.25 4.80 5.00 3.80 4.00 1.27(TYP) 5.80 6.20 0.40 1.27 A1 C B L 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 AIC1729 400mA LOW DROPOUT LINEAR REGULATOR WITH VOLTAGE DETECTOR FUNCTION SPEC NO: DS-1729-P1 04/27/00 " 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 e eB b SYMBOL 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 5