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| AIC1722A 300mA Low Dropout Linear Regulator FEATURES Low Dropout Voltage of 470mV at 300mA Output Current (3.0V Output Version). Guaranteed 300mA Output Current. Maximum Input Voltage is 8V Low Ground Current at 55A. 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 1F for Stability. Current and Thermal Limiting. DESCRIPTION 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 55A, 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. 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 VOUT VIN VIN AIC1722A VOUT + 1F CIN GND + 1F COUT Low Dropout Linear Regulator (CIN and COUT are electrolytic capacitor) Analog Integrations Corporation Si-Soft Research Center 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 DS-1722AP-01 070204 1 AIC1722A ORDERING INFORMATION AIC1722A-XXXXX XX PACKING TYPE TR: TAPE & REEL BG: BAG PACKAGE TYPE U: SOT-23 XA: SOT-89 XT: SOT-89 ZT: TO-92 ZL: TO-92 C: Commercial P: Lead Free Commercial 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: AIC1722A-18CXATR 1.8V Version, in SOT-89 Package & Tape & Reel Packing Type AIC1722A-18PXATR 1.8V Version, in SOT-89 Lead Free Package & Tape & Reel Packing Type PIN CONFIGURATION SOT-23 (CU & PU) TOP VIEW 1: GND 2: VOUT 3: VIN 1 3 2 SOT-89 (CXA & PXA) TOP VIEW 1: GND 2. VIN 3. VOUT SOT-89 (CXT & PXT) TOP VIEW 1: VOUT 2. GND 3. VIN TO-92 (CZT & PZT) TOP VIEW 1: GND 2. VIN 3. VOUT TO-92 (CZL & PZL) TOP VIEW 1: VIN 2. GND 3. VOUT 1 2 3 1 2 3 1 2 3 1 2 3 SOT-23 MARKING Part No. AIC1722A-18XU AIC1722A-20XU AIC1722A-25XU AIC1722A-27XU AIC1722A-30XU AIC1722A-33XU CU BN18 BN20 BN25 BN27 BN30 BN33 PU BN18P BN20P BN25P BN27P BN30P BN33P Part No. AIC1722A-35XU AIC1722A-37XU AIC1722A-38XU AIC1722A-50XU AIC1722A-52XU CU BN35 BN37 BN38 BN50 BN52 PU BN35P BN37P BN38P BN50P BN52P 2 AIC1722A SOT-89 MARKING Part No. AIC1722A-18XXA AIC1722A-20XXA AIC1722A-25XXA AIC1722A-27XXA AIC1722A-30XXA AIC1722A-33XXA AIC1722A-35XXA AIC1722A-37XXA AIC1722A-38XXA AIC1722A-50XXA AIC1722A-52XXA CXA AL18 AL20 AL25 AL27 AL30 AL33 AL35 AL37 AL38 AL50 AL52 PXA AL18P AL20P AL25P AL27P AL30P AL33P AL35P AL37P AL38P AL50P AL52P Part No. AIC1722A-18XXT AIC1722A-20XXT AIC1722A-25XXT AIC1722A-27XXT AIC1722A-30XXT AIC1722A-33XXT AIC1722A-35XXT AIC1722A-37XXT AIC1722A-38XXT AIC1722A-50XXT AIC1722A-52XXT CXT BA18 BA20 BA25 BA27 BA30 BA33 BA35 BA37 BA38 BA50 BA52 PXT BA18P BA20P BA25P BA27P BA30P BA33P BA35P BA37P BA38P BA50P BA52P ABSOLUTE MAXIMUM RATINGS Input Supply Voltage ......................................................................................... -0.3~8V Operating Temperature Range ................................................................. -40C~ 85C Junction Temperature ................................................................................. 125C Storage Temperature Range ...................................................................... -65C~150C Lead Temperature (Soldering. 10sec) ............................................................ 260C 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 erwise specified.) (Note 1) PARAMETER (TA=25C, CIN=1F, COUT=1F, unless oth- 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, 1.4VVOUT3.2V 3.3VVOUT5.2V IL=0.1~300mA 1.4VVOUT3.9V 4.0VVOUT5.2V VIN=7V, VOUT=0V 4.0VVOUT5.2V 3.0VVOUT3.9V 2.5VVOUT2.9V 2.0VVOUT2.4V 1.4VVOUT1.9V VIN=5~8V VIN=7~8V MIN. TYP. MAX. UNIT Output Voltage VIN=8V -2 +2 % Line Regulation Load Regulation (Note 2) Current Limit (Note 3) Dropout Voltage (Note 4) VIN=4V~8V VIN=5.5V~8V VIN=5V VIN=7V 300 3 3 7 15 10 15 20 40 mV mV mA IL=300mA 400 470 570 800 1260 55 55 80 80 mV Ground Current IO=0.1mA~IMAX 1.4VVOUT3.9V 4.0VVOUT5.2V A Note 1: Note 2: Note 3: Note 4: Specifications are production tested at TA =25C. Specifications over the -40C to 85C 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 2.52 AIC1722A-25 2.51 5.30 AIC1722A-52 5.25 V OUT (V) V OUT (V) 2.50 2.49 2.48 2.47 2.46 -40 5.20 5.15 -20 0 20 40 60 80 100 5.10 -40 -20 0 20 40 60 80 100 Temperature (C) Temperature (C) VOUT vs. Temperature 70 AIC1722A-25 58 60 VOUT vs. Temperature AIC1722A-52 ILOAD=0mA ILOAD=100mA 54 52 50 ILOAD=300mA 48 46 -40 Ground Current (uA) Ground Current (uA) 65 ILOAD=100mA 60 ILOAD=0mA 55 56 50 ILOAD=300mA 45 -40 -20 0 20 40 60 80 -20 0 20 40 60 80 Temperature (C) Temperature (C) Ground Current vs. Temperature 70 Ground Current vs. Temperature 60 AIC1722A - 25 60 AIC1722A-52 Ground Current (uA) 50 40 30 20 10 0 Ground Current (uA) 0 1 2 3 4 5 6 7 8 50 40 30 20 10 0 0 1 2 3 4 5 6 7 8 V IN (V) V IN (V) Ground Current vs. VIN Ground Current vs. VIN 5 AIC1722A TYPICAL PERFORMANCE CHARACTERISTICS 500 AIC1722A-25 400 T=50C T=80C 250 (Continued) 300 AIC1722A-52 T=50C T=80C V DROP (mV) 300 T=20C T=-40C 100 V DROP (mV) 200 150 100 50 0 200 T=20C T=-40C 0 0 50 100 150 200 250 300 0 50 100 150 200 250 300 I LOAD (mA) I LOAD (mA) VDROP vs. ILOAD VDROP vs. ILOAD 540 530 AIC1722A V IN=7V Currnet Limit (mA) 520 510 500 490 480 470 460 -40 -20 0 20 40 60 80 V IN=4V V IN=5V V IN=6V Temperature (C) Current Limit vs. Temperature 6 AIC1722A BLOCK DIAGRAM VIN VOUT CURRENT LIMITING ERROR AMP + + 1.235V Reference THERMAL SHUTDOWN - GND PIN DESCRIPTIONS VOUT PIN - Output pin. GND PIN - Power GND. VIN PIN - Power Supply Input. 7 AIC1722A PHYSICAL DIMENSIONS SOT-23 (CU) (PU) D (unit: mm) SYMBOL A 0.25 MIN 0.95 0.05 0.90 0.30 0.08 2.80 2.60 1.50 0.95 BSC 1.90 BSC 0.30 0.60 REF 0 MAX 1.45 0.15 1.30 0.50 0.22 3.00 3.00 1.70 A1 A2 b c D E E1 e E1 e e1 E L L1 c A2 A A1 b e1 L L1 0.60 8 SOT-89 (CXX) (PXX) D D1 C A SYMBOL A B B1 C MIN 1.40 0.44 0.36 0.35 4.40 1.50 2.29 1.50 BSC 3.00 BSC 3.94 0.89 MAX 1.60 0.56 0.48 0.44 4.60 1.83 2.60 H E D D1 E L e e1 B B1 e e1 H L 4.25 1.20 8 AIC1722A TO-92 (CZ)(PZ) SYMBOL A A D MIN 4.32 0.36 4.45 3.18 2.42 1.15 3.43 12.70 2.03 MAX 5.33 0.47 5.20 4.19 2.66 1.39 2.66 b D E e b S E e1 j L S L 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 |
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