AIC1721/1721D LP2950 AIC1721-50/1721D-50 AIC1721/ 1721D AIC1721 AIC1721D

150mA/300mA Low Dropout Linear Regulator with 1% Output Accuracy n FEATURES l n DESCRIPTION Low Dropout Voltage of 130mV at 100mA

AIC1721/1721D AIC1721/1721D 150mA/300mA Low Dropout Linear Regulator with 1% Output Accuracy n FEATURES l n DESCRIPTION Low Dropout Voltage of 130mV at 100mA Output Current (5V Output Version). version l Guaranteed 150mA/300mA Output Current. l Internal 1.3 P-MOSFET Draws no Base Current. l Low Ground Current: 55µA. l 1% Accuracy Output Voltage of 3.3V/5V. l Input Voltage Range up to 12V (5V Output of the LP2950 LP2950. The superior characteristics of the AIC1721/1721D AIC1721/1721D include zero-base current loss, very low dropout voltage, and 1% accuracy output voltage. Typical ground Version). current remains approximately 55µA, under the output condition of from zero up to the maximum Load. Dropout voltage at 100mA output current is l Extremely Tight Load and Line Regulation. l Fast Transient Response. l Needs only 1µF Output Capacitor for Stability. l Current Limiting and Thermal Protection. significantly lower than its bipolar counterpart: 130mV for the AIC1721-50/1721D-50 AIC1721-50/1721D-50, and 180mV for the AIC1721/ AIC1721/ 1721D 1721D. Output current limiting and thermal protections are built to protect AIC1721/1721D AIC1721/1721D against fault condition. n APPLICATIONS l Voltage Regulator for LAN Cards. l Wireless Communication Systems. l Battery Powered Systems. n The AIC1721/1721D AIC1721/1721D is the enhanced CMOS AIC1721 AIC1721 and AIC1721D AIC1721D come with SOT-89 and TO-92 packages of 3-pins, whose definitions are the same as those of LP2950 LP2950 and standard 78XX. TYPICAL APPLICATION CIRCUIT VIN AIC1721/ AIC1721/ AIC1721D AIC1721D VIN VOUT VOUT GND + 1µF C IN + 10µF C OUT Low Dropout Linear Regulator Analog Integrations Corporation 4F, 9 Industry E. 9th Rd, Science-Based Industrial Park, Hsinchu, Taiwan TEL: 886-3-5772500 FAX: 886-3-5772510 www.analog.com.tw DS-1721-01 DS-1721-01 032502 1 AIC1721/1721D AIC1721/1721D n ORDERING INFORMATION AIC1721 AIC1721 X-XXCXXX PIN CONFIGURATION PACKING TYPE TR: TAPE & REEL BG: BAG PACKAGE TYPE X: SOT-89 Z: TO-92 OUTPUT VOLTAGE DEFAULT: 3.3V 50: 5.0V OUTPUT CURRENT DEFAULT: 150mA D: 300mA SOT-89 FRONT VIEW 1. VOUT 2. GND 3. VIN TO-92 FRONT VIEW 1. GND 2. VIN 3. VOUT 1 2 3 1 2 3 Example: AIC1721CXTR AIC1721CXTR à 150mA, 3.3V Version, in SOT-89 Package & Tape & Reel Packing Type n ABSOLUTE MAXIMUM RATINGS Input Supply Voltage . . . . . . . -0.3~12V Operating Junction Temperature Range . . . . . . -40°C~ 125°C Storage Temperature Range Power Dissipation . . . . . -65°C~150°C SOT-89 Package . . . . . 0. 80W TO-92 Package . . . . 0.78W n TEST CIRCUIT Refer to the TYPICAL APPLICATION CIRCUIT 2 AIC1721/1721D AIC1721/1721D n ELECTRICAL CHARACTERISTICS (T J =25°C, C IN=1µF, COUT=10µF, unless otherwise specified.) PARAMETER TEST CONDITIONS AIC1721/1721D-50 AIC1721/1721D-50 VIN=5.5~12V, IOUT=0mA AIC1721/1721D AIC1721/1721D VIN=3.6~12V, IOUT=0mA Output Voltage Temperature Coefficiency IOUT=1mA AIC1721/1721D-50 AIC1721/1721D-50 AIC1721/1721D AIC1721/1721D IOUT=0.1~150mA IOUT=0.1~300mA IOUT=0.1~150mA IOUT=0.1~300mA VIN=7V, VOUT=0V VIN=5V, VOUT=0V VIN=7V, VOUT=0V VIN=5V, VOUT=0V IOUT=150mA IOUT=150mA IOUT=300mA IOUT=300mA UNIT 4.950 3.267 5.0 3.3 5.050 3.333 V 150 PPM/°C 3 3 10 10 mV 7 7 7 7 440 440 440 440 200 270 400 540 15 25 15 25 300 370 500 640 55 55 80 80 VIN=5.5~12V VIN=3.6~12V AIC1721-50 AIC1721-50 AIC1721D-50 AIC1721D-50 AIC1721 AIC1721 AIC1721D AIC1721D AIC1721-50 AIC1721-50 AIC1721 AIC1721 AIC1721D-50 AIC1721D-50 AIC1721D AIC1721D AIC1721-50 AIC1721-50 AIC1721 AIC1721 AIC1721D-50 AIC1721D-50 AIC1721D AIC1721D MAX. (Note 1) Line Regulation TYP. 50 Output Voltage MIN. Load Regulation (Note 2) Current Limit (Note 3) Dropout Voltage (Note 4) Ground Current Note 1: Note 2: Note 3: Note 4: VIN=7V, VIN=7V, VIN=5V, VIN=5V, IOUT=0.1mA~IMAX AIC1721/1721D-50 AIC1721/1721D-50 AIC1721/1721D AIC1721/1721D VIN=5.5~12V VIN=4~12V 300 300 300 300 mV mA mV µA 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 AIC1721/1721D AIC1721/1721D n TYPICAL PERFORMANCE CHARACTERISTICS 60 50 103 Ground Current (µA) Normalized Output Voltage (%) 104 100 98 20 0 -40 0 0 50 100 125 0 2 4 6 Temperature (°C) Fig. 1 8 10 12 Input Voltage (V) Output Voltage vs. Temperature Fig. 2 60 Ground Current vs. Input Voltage 600 V OUT=3.3V, 3.5V, 3.7V & 3.8V 500 Dropout Voltage (mV) 58 Ground Current ( µA) 30 10 96 I L =300mA 56 I L =150mA 54 I L=0.1mA 52 400 300 200 VOUT =5.0V & 5.2V 100 0 50 -50 -25 0 25 50 75 100 125 1 00 50 150 2 50 2 00 3 00 Load Current (mA) Fig. 4 Dropout Voltage vs. Load Current 500 V OUT=5V I L=300mA 500 AIC1721D AIC1721D 400 Short Circuit Current (mA) 400 300 I L=150mA 200 300 100 I L=0.1mA 0 -50 0 Temperature (°C) Fig. 3 Ground Current vs. Temperature 600 Dropout Voltage(mV) 40 -25 0 25 50 75 100 125 200 AIC1721 AIC1721 -50 -25 Temperature( °C) Fig. 5 Dropout Voltage vs Temperature 0 25 50 75 100 125 Temperature (°C) Fig. 6 Short Circuit Current vs. Temperature 4 AIC1721/1721D AIC1721/1721D n TYPICAL PERFORMANCE CHARACTERISTICS (Continued) Output Voltage (mV, AC) 50 100 0 COUT =1 µF I L=1mA V OUT =5V 6 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 COUT =1 µF -200 8 0 0 -100 Load Current (mA) -50 Input Voltage (V) Output Voltage (mV, AC) 100 0.9 VOUT=5V 150 0.1 1.0 0 Time (mS) Fig. 7 Line Transient Response 0.5 1.0 1.5 Fig. 8 2.0 2.5 3.0 3.5 4.0 4.5 5.0 Time (mS) Load Transient Response C OUT=10µF Output Voltage (mA, AC) 20 VOUT =5V 0 -20 -40 Load Current (mA) -60 150 0.1 0 0.5 1.0 1.5 Fig. 9 2.0 2.5 3.0 3.5 4.0 4.5 5.0 Time (mS) Load Transient Response n BLOCK DIAGRAM VIN VOUT CURRENT LIMITING ERROR AMP + - + THERMAL LIMITING VREF 1.235V GND 5 AIC1721/1721D AIC1721/1721D n PIN DESCRIPTIONS VOUT PIN - Output pin. GND PIN - Power GND. VIN PIN - Power Supply Input. n APPLICATION INFORMATIONS A 1µF (or greater) capacitor is required between value of this capacitor may be increased without the AIC1721/1721D AIC1721/1721D output and ground for stability. limit. Without this capacitor the part will oscillate. Even though most types of capacitor may work, the A 0.1µF capacitor (or greater) should be placed equivalent series resistance (ESR) should be held from the AIC1721/1721D AIC1721/1721D input to ground if the to 5 or less if Aluminum electrolytic type is used. lead inductance between the input and power Many Aluminum electrolytic have electrolytes that source exceeds 500nH (approximately 10 inches freeze at about -30°C, so solid tantalums are of trace). recommended for operation below -25°C. The 6 AIC1721 AIC1721 n PHYSICAL DIMENSIONS l SOT-89 (unit: mm) A SYMBOL MIN MAX C 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 D 2.29 2.60 D1 H E L e e e1 1.50 (TYP.) e1 B 3.00 (TYP.) H 3.94 4.25 L 0.89 1.20 SYMBOL MIN MAX A 4.32 5.33 l SOT89 Marking Part No. AIC1721 AIC1721 AIC1721-50 AIC1721-50 Marking AF33 AF50 Part No. AIC1721D AIC1721D AIC1721D-50 AIC1721D-50 Marking AG33 AG50 l TO-92 (unit: mm) A E L C C e1 D 0.38 (TYP.) D 4.40 5.20 E 3.17 4.20 e1 L 1.27 (TYP.) 12.7 - 7