AIC1722A 300mA Low Dropout Linear Regulator FEATURES DESCRIPTION Low Dropout Voltage of 470mV at 300mA Output Current (3.0V Output Version). The AIC1722A is a 3-pin low dropout linear regulator. The superior characteristics of the AIC1722A 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 300mA output current is exceptionally low. Output current limiting and thermal limiting are built in to provide maximal protection to the AIC1722A against fault conditions. Guaranteed 300mA Output Current. Maximum Input Voltage is 8V Low Ground Current at 55µA. 2% Accuracy Output Voltage of 1.8V/ 2.0V /2.5V /2.7V/ 3.0V/ 3.3V/ 3.5V/ 3.7V/ 3.8V/ 5.0V/ 5.2V. Needs only 1µF for Stability. Current and Thermal Limiting. The AIC1722A comes in the popular 3-pin SOT-89, TO-92 and SOT-23 packages. 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 + 1µF CIN VOUT AIC1722A GND VOUT + 1µF COUT Low Dropout Linear Regulator (CIN and COUT are electrolytic capacitor) Analog Integrations Corporation Si-Soft Research Center DS-1722AP-01 070204 3A1, No.1, Li-Hsin Rd. I , Science Park , Hsinchu 300, Taiwan , R.O.C. TEL: 886-3-5772500 FAX: 886-3-5772510 www.analog.com.tw 1 AIC1722A ORDERING INFORMATION AIC1722A-XXXXX XX PIN CONFIGURATION PACKING TYPE TR: TAPE & REEL BG: BAG PACKAGE TYPE U: SOT-23 XA: SOT-89 XT: SOT-89 ZT: TO-92 ZL: TO-92 1 C: Commercial P: Lead Free Commercial SOT-89 (CXA & PXA) TOP VIEW 1: GND 2. VIN 3. VOUT SOT-89 (CXT & PXT) TOP VIEW 1: VOUT 2. GND 3. VIN OUTPUT VOLTAGE 18: 1.8V 20: 2.0V 25: 2.5V 27: 2.7V 30: 3.0V 33: 3.3V 35: 3.5V 37: 3.7V 38: 3.8V 50: 5.0V 52: 5.2V Example: 3 SOT-23 (CU & PU) TOP VIEW 1: GND 2: VOUT 3: VIN TO-92 (CZT & PZT) TOP VIEW 1: GND 2. VIN 3. VOUT AIC1722A-18CXATR 1.8V Version, in SOT-89 Package & Tape & Reel Packing Type AIC1722A-18PXATR TO-92 (CZL & PZL) TOP VIEW 1: VIN 2. GND 3. VOUT 2 1 2 3 1 2 3 1 2 3 1 2 3 1.8V Version, in SOT-89 Lead Free Package & Tape & Reel Packing Type SOT-23 MARKING Part No. CU PU Part No. CU PU AIC1722A-18XU BN18 BN18P AIC1722A-35XU BN35 BN35P AIC1722A-20XU BN20 BN20P AIC1722A-37XU BN37 BN37P AIC1722A-25XU BN25 BN25P AIC1722A-38XU BN38 BN38P AIC1722A-27XU BN27 BN27P AIC1722A-50XU BN50 BN50P AIC1722A-30XU BN30 BN30P AIC1722A-52XU BN52 BN52P AIC1722A-33XU BN33 BN33P 2 AIC1722A SOT-89 MARKING Part No. CXA PXA Part No. CXT PXT AIC1722A-18XXA AL18 AL18P AIC1722A-18XXT BA18 BA18P AIC1722A-20XXA AL20 AL20P AIC1722A-20XXT BA20 BA20P AIC1722A-25XXA AL25 AL25P AIC1722A-25XXT BA25 BA25P AIC1722A-27XXA AL27 AL27P AIC1722A-27XXT BA27 BA27P AIC1722A-30XXA AL30 AL30P AIC1722A-30XXT BA30 BA30P AIC1722A-33XXA AL33 AL33P AIC1722A-33XXT BA33 BA33P AIC1722A-35XXA AL35 AL35P AIC1722A-35XXT BA35 BA35P AIC1722A-37XXA AL37 AL37P AIC1722A-37XXT BA37 BA37P AIC1722A-38XXA AL38 AL38P AIC1722A-38XXT BA38 BA38P AIC1722A-50XXA AL50 AL50P AIC1722A-50XXT BA50 BA50P AIC1722A-52XXA AL52 AL52P AIC1722A-52XXT BA52 BA52P ABSOLUTE MAXIMUM RATINGS Input Supply Voltage ...................................................…………..…….................. -0.3~8V Operating Temperature Range …………….....………........…………................ -40°C~ 85°C Junction Temperature ……………………………………………………………………... 125°C Storage Temperature Range ....................……......................………............. -65°C~150°C Lead Temperature (Soldering. 10sec) …………………………………………………… 260°C Power Dissipation SOT-89 Package ....…...…................. 0.5W TO-92 Package .....…………............. 0.5W SOT-23 Package.....…………............. 0.5W Absolute Maximum Rating are those value beyond which the life of a device may be impaired. TEST CIRCUIT Refer to the TYPICAL APPLICATION CIRCUIT 3 AIC1722A ELECTRICAL CHARACTERISTICS (TA=25°C, CIN=1µF, COUT=1µF, unless oth- erwise specified.) (Note 1) PARAMETER Output Voltage Line Regulation Load Regulation (Note 2) Current Limit (Note 3) TEST CONDITIONS No Load AIC1722A-52 AIC1722A-50 AIC1722A-38 AIC1722A-37 AIC1722A-35 AIC1722A-33 AIC1722A-30 AIC1722A-27 AIC1722A-25 AIC1722A-20 AIC1722A-18 IL=1mA, 1.4V≤VOUT≤3.2V 3.3V≤VOUT≤5.2V IL=0.1~300mA 1.4V≤VOUT≤3.9V 4.0V≤VOUT≤5.2V IL=300mA Ground Current IO=0.1mA~IMAX 1.4V≤VOUT≤3.9V 4.0V≤VOUT≤5.2V Note 2: Note 3: Note 4: TYP. -2 MAX. UNIT +2 % VIN=4V~8V VIN=5.5V~8V 3 3 10 15 mV VIN=5V VIN=7V 7 15 20 40 mV VIN=7V, VOUT=0V Dropout Voltage (Note 4) Note 1: VIN=8V MIN. 300 4.0V≤VOUT≤5.2V 3.0V≤VOUT≤3.9V 2.5V≤VOUT≤2.9V 2.0V≤VOUT≤2.4V 1.4V≤VOUT≤1.9V VIN=5~8V VIN=7~8V mA 400 470 570 800 1260 55 55 mV 80 80 µA Specifications are production tested at TA =25°C. Specifications over the -40°C to 85°C operating temperature range are assured by design, characterization and correlation with Statistical Quality Controls (SQC). 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. 4 AIC1722A TYPICAL PERFORMANCE CHARACTERISTICS 5.30 2.52 AIC1722A-52 AIC1722A-25 2.51 V OUT (V) V OUT (V) 5.25 2.50 2.49 2.48 5.20 5.15 2.47 2.46 -40 -20 0 20 40 60 80 5.10 -40 100 -20 0 20 VOUT vs. Temperature 60 Ground Current (uA) Ground Current (uA) 65 ILOAD=100mA 60 ILOAD=0mA 55 ILOAD=300mA -20 0 20 40 60 ILOAD=0mA 56 ILOAD=100mA 54 52 50 ILOAD=300mA 48 46 -40 80 100 AIC1722A-52 58 -40 80 VOUT vs. Temperature AIC1722A-25 45 60 Temperature (°C) 70 50 40 Temperature (°C) -20 0 Temperature (°C) 20 40 60 80 Temperature (°C) Ground Current vs. Temperature Ground Current vs. Temperature 70 AIC1722A-52 60 AIC1722A - 25 Ground Current (uA) Ground Current (uA) 60 50 40 30 20 10 50 40 30 20 10 0 0 1 2 3 4 5 6 7 8 0 0 1 2 3 4 5 V IN (V) V IN (V) Ground Current vs. VIN Ground Current vs. VIN 6 7 8 5 AIC1722A TYPICAL PERFORMANCE CHARACTERISTICS 500 300 AIC1722A-25 V DROP (mV) V DROP (mV) 250 T=50°C 300 T=20°C 200 T=-40°C 100 0 T=50°C 200 T=80°C 150 100 T=20°C 50 T=-40°C 0 0 540 50 100 150 200 250 300 0 50 100 150 200 I LOAD (mA) I LOAD (mA) VDROP vs. ILOAD VDROP vs. ILOAD 250 300 AIC1722A 530 Currnet Limit (mA) AIC1722A-52 T=80°C 400 (Continued) V IN=7V 520 510 V IN=6V 500 490 480 V IN=5V 470 V IN=4V 460 -40 -20 0 20 40 60 80 Temperature (°C) Current Limit vs. Temperature 6 AIC1722A BLOCK DIAGRAM VIN VOUT CURRENT LIMITING ERROR AMP + + - THERMAL SHUTDOWN 1.235V Reference GND PIN DESCRIPTIONS VOUT PIN - Output pin. GND PIN - Power GND. VIN PIN - Power Supply Input. 7 AIC1722A PHYSICAL DIMENSIONS (unit: mm) SOT-23 (CU) (PU) D 0.25 E1 E c L e θ L1 e1 A2 A A1 b SYMBOL MIN MAX A 0.95 1.45 A1 0.05 0.15 A2 0.90 1.30 b 0.30 0.50 c 0.08 0.22 D 2.80 3.00 E 2.60 3.00 E1 1.50 1.70 e 0.95 BSC e1 1.90 BSC L 0.30 L1 0.60 0.60 REF θ 0˚ 8˚ SOT-89 (CXX) (PXX) D A SYMBOL MIN MAX C A 1.40 1.60 B 0.44 0.56 B1 0.36 0.48 C 0.35 0.44 D 4.40 4.60 D1 1.50 1.83 E 2.29 2.60 D1 H E L B e e1 B1 e 1.50 BSC e1 3.00 BSC H 3.94 4.25 L 0.89 1.20 8 AIC1722A TO-92 (CZ)(PZ) A D b S E L SYMBOL MIN MAX A 4.32 5.33 b 0.36 0.47 D 4.45 5.20 E 3.18 4.19 e 2.42 2.66 e1 1.15 1.39 j 3.43 - L 12.70 - S 2.03 2.66 j e1 e Note: Information provided by AIC is believed to be accurate and reliable. However, we cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in an AIC product; nor for any infringement of patents or other rights of third parties that may result from its use. We reserve the right to change the circuitry and specifications without notice. Life Support Policy: AIC does not authorize any AIC product for use in life support devices and/or systems. Life support devices or systems are devices or systems which, (I) are intended for surgical implant into the body or (ii) support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 9