AIC1722 300mA Low Dropout Linear Regulator FEATURES Low Dropout Voltage of 130mV at 100mA Output Current (5.2V Output Version). Guaranteed 300mA Output Current. Internal 1.3Ω P-MOSFET Draws no Base Current. Low Ground Current at 55µA. 2% Accuracy Output Voltage of 3.3V/ 3.5V/ 3.7V/ 3.8V/ 5.0V/ 5.2V. Input Voltage Range up to 12V. Needs only 1µF for Stability. Current and Thermal Limiting. DESCRIPTION The AIC1722 is a 3-pin low dropout linear regulator. The superior characteristics of the AIC1722 include zero base current loss, very low dropout voltage, and 2% accuracy output voltage. Typical ground current remains approximately 55µA, from no load to maximum loading conditions. Dropout voltage at 100mA output current is exceptionally low: 130mV for the AIC1722-50 and AIC1722-52, 180mV for the AIC1722-33, AIC1722-35, and AIC1722-37 AIC1722-38. Output current limiting and thermal APPLICATIONS limiting Voltage Regulator for CD-ROM Drivers. Voltage Regulator for LAN Cards. Voltage Regulator for Microprocessor. Wireless Communication Systems. Battery Powered Systems. are protection to built the in to provide AIC1722 maximal against fault conditions. The AIC1722 comes in the popular 3-pin SOT-89 and TO-92 packages. TYPICAL APPLICATION CIRCUIT VIN VOUT AIC1722 VIN + 1µF CIN GND VOUT + 10µF COUT Low Dropout Linear Regulator Analog Integrations Corporation 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC DS-1722-01 TEL: 886-3-5772500 FAX: 886-3-5772510 www.analog.com.tw 1 AIC1722 ORDERING INFORMATION AIC1722-XXXXX ORDER NUMBER AIC1722-33CX AIC1722-35CX AIC1722-37CX AIC1722-38CX AIC1722-50CX AIC1722-52CX (SOT-89) PACKAGING TYPE X : SOT-89 ZT : TO-92 ZL : TO-92 TEMPERATURE RANGE C: 0°C~70°C FRONT VIEW 1: VOUT 2: GND 3: VIN 1 AIC1722-33CZT AIC1722-35CZT AIC1722-37CZT AIC1722-38CZT AIC1722-50CZT AIC1722-52CZT (TO-92 T TYPE) OUTPUT VOLTAGE 33: 3.3V 35: 3.5V 37: 3.7V 38: 3.8V 50: 5.0V 52: 5.2V PIN CONFIGURATION 2 3 TOP VIEW 1 1: GND 2: VIN 3: VOUT AIC1722-33CZL AIC1722-35CZL AIC1722-37CZL AIC1722-38CZL AIC1722-50CZL AIC1722-52CZT (TO-92 L TYPE) 2 3 TOP VIEW 1 1: VIN 2: GND 3: VOUT 2 3 ABSOLUTE MAXIMUM RATINGS Input Supply Voltage ...................................................…………..…….................. -0.3~12V Operating Junction Temperature Range .....………........…………................ -40°C~ 125°C Storage Temperature Range ....................……......................……….............. -65°C~150°C Power Dissipation SOT-89 Package ....…...…................. 0.5W TO-92 Package .....…………............. 0.5W TEST CIRCUIT ELECTRICAL CHARACTERISTICS Refer to the TYPICAL APPLICATION CIRCUIT otherwise specified.) PARAMETER Output Voltage (Ta=25°°C, CIN=1µ µF, COUT=10µ µF, unless TEST CONDITIONS No Load AIC1722-52 AIC1722-50 AIC1722-38 AIC1722-37 AIC1722-35 AIC1722-33 VIN=5.5~12V VIN=5.5~12V VIN=4.1~12V VIN=4.0~12V VIN=4.0~12V VIN=3.6~12V MIN. TYP. MAX. UNIT 5.100 4.900 3.725 3.625 3.430 3.235 5.2 5.0 3.8 3.7 3.5 3.3 5.300 5.100 3.875 3.775 3.570 3.365 V 2 AIC1722 ELECTRICAL CHARACTERISTICS PARAMETER Output Voltage Temperature Coefficiency Line Regulation Load Regulation (Note 2) Current Limit (Note 3) Dropout Voltage (Note 4) Ground Current Note 1: Note 2: Note 3: Note 4: (Continued) TEST CONDITIONS MIN. (Note 1) IL=1mA AIC1722-52 AIC1722-50 AIC1722-38 AIC1722-37 AIC1722-35 AIC1722-33 AIC1722-52 AIC1722-50 AIC1722-38 AIC1722-37 AIC1722-35 AIC1722-33 AIC1722-52 AIC1722-50 AIC1722-38 AIC1722-37 AIC1722-35 AIC1722-33 AIC1722s AIC1722-52 AIC1722-50 AIC1722-38 AIC1722-37 AIC1722-35 AIC1722-33 IO=0.1mA~IMAX AIC1722-52 AIC1722-50 AIC1722-38 AIC1722-37 AIC1722-35 AIC1722-33 VIN=5.5~12V VIN=5.5~12V VIN=4.1~12V VIN=4.0~12V VIN=4.0~12V VIN=3.6~12V VIN=7V, IL=0.1~300mA VIN=7V, IL=0.1~300 mA VIN=5V, IL=0.1~300mA VIN=5V, IL=0.1~300mA VIN=5V, IL=0.1~300mA VIN=5V, IL=0.1~300mA VIN=7V, VOUT=0V VIN=7V, VOUT=0V VIN=7V, VOUT=0V VIN=5V, VOUT=0V VIN=5V, VOUT=0V VIN=5V, VOUT=0V IL=0.1mA IL=300mA IL=300mA IL=300mA IL=300mA IL=300mA IL=300mA VIN=5.5~12V VIN=5.5~12V VIN=4~12V VIN=4~12V VIN=4~12V VIN=4~12V 320 320 320 320 320 320 TYP. MAX. UNIT 50 150 PPM/°C 3 3 3 3 3 3 7 7 7 7 7 7 440 440 440 440 440 440 0.2 400 400 540 540 540 540 10 10 10 10 10 10 25 25 25 25 25 25 10 500 500 640 640 640 640 mV 55 55 55 55 55 55 80 80 80 80 80 80 µA mV mV mA Guaranteed by design. Regulation is measured at constant junction temperature, using pulse testing with a low ON time. Current limit is measured by pulsing a short time. 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. 3 AIC1722 TYPICAL PERFORMANCE CHARACTERISTICS Ground Current vs. Input Voltage Output Voltage vs. Temperature 60 50 103 Ground Current (µA) Normalized Output Voltage (%) 104 100 98 40 30 20 10 96 0 -40 0 0 50 100 125 0 2 4 Ground Current vs. Temperature 10 12 Dropout Voltage vs. Load Current VOUT=3.3V, 3.5V, 3.7V & 3.8V 500 Dropout Voltage (mV) 58 Ground Current (µA) 8 600 60 IL =300mA 56 IL =150mA 54 IL=0.1mA 52 50 6 Input Voltage (V) Temperature (°C) 400 300 200 VOUT=5.0V & 5.2V 100 0 -50 0 -25 25 75 50 100 0 125 50 100 150 200 300 250 Load Current (mA) Temperature (°c) Line Transient Response Load transient Response 50 0 COUT=1µF IL=1mA VOUT=5.2V -50 20 0 -20 -40 -60 Load Current (mA) Input Voltage (V) Output Voltage (mV, AC) Output Voltage (mV, AC) 100 8 6 0 0.1 0.2 0.3 0.4 0.5 0.6 Time (mS) 0.7 0.8 0.9 1.0 150 0.1 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 Time (mS) 4 AIC1722 TYPICAL PERFORMANCE CHARACTERISTICS Load Transient Response Recommended Max. Output Current v.s. Input Voltage COUT= 1 µF V OUT= 5.2V Output Current, IOUT (mA) Out put Volt age (mV, AC) 400 100 0 -100 -200 Load Current (mA) (Continued) 150 0.1 3.3V 3.5V 3.7V 3.8V 300 200 5.2V 5V 100 0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 4 5 6 Time (mS) 7 8 9 Input Voltage VIN (V) 10 11 12 BLOCK DIAGRAM VIN VOUT CURRENT LIMITING ERROR AMP - - + THERMAL SHUTDOWN 1.235V Reference GND PIN DESCRIPTION APPLICATION INFORMATIONS VOUT PIN - Output pin. GND PIN - Power GND. VIN PIN - Power Supply Input. A 1µF (or greater) capacitor is required between the AIC1722 output and ground for stability. Without this capacitor the part will oscillate. Even though most types of capacitor may work, the equivalent series resistance (ESR) should be held to 5Ω or less if Aluminum electrolytic type is used. Many Aluminum electrolytics have electrolytes that freeze at about -30°C, so solid tantalums are recommended for operation below -25°C. The value of this capacitor may be increased without limit. A 0.1µF capacitor (or greater) should be placed from the AIC1722 input to ground if the lead inductance between the input and power source exceeds 500nH (approximately 10 inches of trace). 5 AIC1722 PHYSICAL DIMENSIONS SOT-89 (unit: mm) A D D1 C H E L B e e1 SYMBOL MIN MAX A 1.40 1.60 B 0.36 0.48 C 0.35 0.44 D 4.40 4.60 D1 1.62 1.83 E 2.29 2.60 e 1.50 (TYP.) e1 3.00 (TYP.) H 3.94 4.25 L 0.89 1.20 SYMBOL MIN MAX A 4.32 5.33 SOT-89 MARKING Part No. AIC1722-33 AIC1722-35 AIC1722-37 AIC1722-38 AIC1722-50 AIC1722-52 Marking AH33 AH35 AH37 AH38 AH50 AH52 TO-92 (unit: mm) A E L C e1 D C 0.38 (TYP.) D 4.40 5.20 E 3.17 4.20 e1 L 1.27 (TYP.) 12.7 - 6