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| 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 1.3 P-MOSFET Draws no Base Current. Low Ground Current at 55A. 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 1F 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 55A, 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 limiting are to built the in to provide maximal fault protection conditions. The AIC1722 comes in the popular 3-pin SOT-89 and TO-92 packages. AIC1722 against APPLICATIONS Voltage Regulator for CD-ROM Drivers. Voltage Regulator for LAN Cards. Voltage Regulator for Microprocessor. Wireless Communication Systems. Battery Powered Systems. TYPICAL APPLICATION CIRCUIT VIN VIN VOUT AIC1722 VOUT + 1F CIN GND + 10F COUT Low Dropout Linear Regulator Analog Integrations Corporation DS-1722-01 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC TEL: 886-3-5772500 FAX: 886-3-5772510 www.analog.com.tw 1 AIC1722 ORDERING INFORMATION AIC1722-XXXXX PACKAGING TYPE X : SOT-89 ZT : TO-92 ZL : TO-92 TEMPERATURE RANGE C: 0C~70C OUTPUT VOLTAGE 33: 3.3V 35: 3.5V 37: 3.7V 38: 3.8V 50: 5.0V 52: 5.2V ORDER NUMBER AIC1722-33CX AIC1722-35CX AIC1722-37CX AIC1722-38CX AIC1722-50CX AIC1722-52CX (SOT-89) AIC1722-33CZT AIC1722-35CZT AIC1722-37CZT AIC1722-38CZT AIC1722-50CZT AIC1722-52CZT (TO-92 T TYPE) AIC1722-33CZL AIC1722-35CZL AIC1722-37CZL AIC1722-38CZL AIC1722-50CZL AIC1722-52CZT (TO-92 L TYPE) PIN CONFIGURATION FRONT VIEW 1: VOUT 2: GND 3: VIN 1 2 3 TOP VIEW 1: GND 2: VIN 3: VOUT 1 2 3 TOP VIEW 1: VIN 2: GND 3: VOUT 1 2 3 ABSOLUTE MAXIMUM RATINGS Input Supply Voltage ......................................................................................... -0.3~12V Operating Junction Temperature Range .................................................. -40C~ 125C Storage Temperature Range ....................................................................... -65C~150C Power Dissipation SOT-89 Package .............................. 0.5W TO-92 Package .............................. 0.5W TEST CIRCUIT Refer to the TYPICAL APPLICATION CIRCUIT ELECTRICAL CHARACTERISTICS otherwise specified.) PARAMETER No Load AIC1722-52 AIC1722-50 AIC1722-38 AIC1722-37 AIC1722-35 AIC1722-33 (Ta=25C, CIN=1F, COUT=10F, unless MIN. 5.100 4.900 3.725 3.625 3.430 3.235 TYP. 5.2 5.0 3.8 3.7 3.5 3.3 MAX. 5.300 5.100 3.875 3.775 3.570 3.365 UNIT TEST CONDITIONS VIN=5.5~12V VIN=5.5~12V VIN=4.1~12V VIN=4.0~12V VIN=4.0~12V VIN=3.6~12V Output Voltage V 2 AIC1722 ELECTRICAL CHARACTERISTICS PARAMETER Output Voltage Temperature Coefficiency (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 (Continued) TEST CONDITIONS MIN. TYP. 50 MAX. 150 UNIT PPM/C Line Regulation Load Regulation (Note 2) Current Limit (Note 3) Dropout Voltage (Note 4) 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 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 55 55 55 55 55 55 10 10 10 10 10 10 25 25 25 25 25 25 mV mV mA 10 500 500 640 640 640 640 80 80 80 80 80 80 mV Ground Current A Note 1: Note 2: Note 3: Note 4: 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 Output Voltage vs. Temperature 104 60 Ground Current vs. Input Voltage Normalized Output Voltage (%) 50 Ground Current (A) -40 0 0 50 100 125 103 40 100 30 20 98 10 96 0 0 2 4 6 8 10 12 Temperature (C) Input Voltage (V) Dropout Voltage vs. Load Current 600 Ground Current vs. Temperature 60 58 500 VOUT=3.3V, 3.5V, 3.7V & 3.8V Dropout Voltage (mV) Ground Current (A) 400 56 IL =300mA IL =150mA 300 54 200 52 IL=0.1mA VOUT=5.0V & 5.2V 100 50 0 -50 -25 0 25 50 75 100 125 0 50 100 150 200 250 300 Temperature (c) Load Current (mA) Line Transient Response 100 Load transient Response Output Voltage (mV, AC) Load Current (mA) 0.9 1.0 20 0 Output Voltage (mV, AC) 50 0 -50 COUT=1F IL=1mA VOUT=5.2V -20 -40 -60 150 0.1 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 Input Voltage (V) 8 6 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 Time (mS) Time (mS) 4 AIC1722 TYPICAL PERFORMANCE CHARACTERISTICS Load Transient Response 400 (Continued) Recommended Max. Output Current v.s. Input Voltage 3.3V 3.5V 3.7V 3.8V Out put Volt age (mV, AC) 100 0 Output Current, IOUT (mA) COUT= 1 F V OUT= 5.2V 300 -100 -200 200 5V 5.2V Load Current (mA) 150 100 0.1 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) Input Voltage VIN (V) 7 8 9 10 11 12 BLOCK DIAGRAM VIN VOUT CURRENT LIMITING ERROR AMP THERMAL SHUTDOWN - + 1.235V Reference - GND PIN DESCRIPTION VOUT PIN - Output pin. GND PIN - Power GND. VIN PIN - Power Supply Input. APPLICATION INFORMATIONS A 1F (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 5 or less if Aluminum electrolytic type is used. Many Aluminum electrolytics have electrolytes that freeze at about -30C, so solid tantalums are recommended for operation below -25C. The value of this capacitor may be increased without limit. A 0.1F 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) D D1 C A SYMBOL A B C D MIN 1.40 0.36 0.35 4.40 1.62 2.29 MAX 1.60 0.48 0.44 4.60 1.83 2.60 1.50 (TYP.) 3.00 (TYP.) H E D1 E e L e e1 B e1 H L 3.94 0.89 4.25 1.20 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) SYMBOL A L C E MIN 4.32 MAX 5.33 0.38 (TYP.) A C D E e1 L e1 D 4.40 3.17 1.27 (TYP.) 12.7 5.20 4.20 - 6 |
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