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| AIC1739 300mA Low Dropout Linear Regulator n FEATURES l n DESCRIPTION The AIC1739 is a 3-pin low dropout linear regulator. The superior characteristics of the AIC1739 include zero base current loss, very low dropout voltage, and 2% accuracy output voltage. Typical ground current no remains load to approximately 55A, from Low Dropout Voltage of 180mV at 100mA Output Current (3.0V Output Version). Guaranteed 300mA Output Current. Internal 1.3 Current. P-MOSFET Draws no Base l l l l Low Ground Current at 55A. 2% Accuracy Output Voltage of 1.8V/ 2.0V/ 2.5V/ 2.7V/ 3.0V. Input Voltage Range up to 12V. Needs only 1F for Stability. Current and Thermal Limiting. maximum loading conditions. Dropout voltage is exceptionally low. Output current limiting and thermal limiting are built in to provide maximal protection to the AIC1739 against fault conditions. The AIC1739 comes in the popular 3-pin SOT-89 and TO-92 packages. l l l n APPLICATIONS l l l l l Voltage Regulator for CD-ROM Drivers. Voltage Regulator for LAN Cards. Voltage Regulator for Microprocessor. Wireless Communication Systems. Battery Powered Systems. n TYPICAL APPLICATION CIRCUIT VIN V IN VOUT AIC1739 V OUT + 1 F C IN GND + 10 F C OUT Low Dropout Linear Regulator Analog Integrations Corporation DS-1739-01 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 AIC1739 n ORDERING INFORMATION AIC1739-XCX PACKAGING TYPE X: SOT89 ZT: TO92 ZL: TO92 ORDER NUMBER AIC1739-18CX AIC1739-20CX AIC1739-25CX AIC1739-27CX AIC1739-30CX (SOT-89) AIC1739-18CZT AIC1739-20CZT AIC1739-25CZT AIC1739-27CZT AIC1739-30CZT (TO-92) AIC1739-18CZL AIC1739-20CZL AIC1739-25CZL AIC1739-27CZL AIC1739-30CZL (TO-92 L TYPE) PIN CONFIGURATION FRONT VIEW 1: VOUT 2: GND 3: VIN 1 2 3 TOP VIEW 1 1: GND 2: VIN 3: VOUT 2 3 OUTPUT VOLTAGE 18: 1.8V 20: 2.0V 25: 2.5V 27: 2.7V 30: 3.0V TOP VIEW 1 1: VIN 2: GND 3: VOUT 2 3 n ABSOLUTE MAXIMUM RATINGS Input Supply Voltage ...................................................... ... ... ... ..... ... .................. -0.3~12V Operating Junction Temperature Range ........ ... ... ........... ... ... ... ................ -40C~ 85C Storage Temperature Range ....................... ... ......................... ... ... .............. -65C~150C Power Dissipation SOT-89 Package ....... ...... ................. 0.5W TO-92 Package ........ ... ... ... ............. 0.5W n TEST CIRCUIT Refer to the TYPICAL APPLICATION CIRCUIT n ELECTRICAL CHARACTERISTICS (Ta=25C, CIN=1F, C OUT=10F, unless otherwise specified.) PARAMETER Output Voltage TEST CONDITIONS No Load AIC1739-30 AIC1739-27 AIC1739-25 AIC1739-20 AIC1739-18 (Note 1) VIN=4.0~12V VIN=4.0~12V VIN=4.0~12V VIN=4.0~12V VIN=4.0~12V MIN. 2.940 2.646 2.550 1.960 1.764 TYP. 3.000 2.700 2.500 2.000 1.800 50 MAX. 3.060 2.754 2.550 2.040 1.836 150 UNIT V Output Voltage Temperature Coefficiency PPM/C 2 AIC1739 n ELECTRICAL CHARACTERISTICS (Continued) PARAMETER Line Regulation Load Regulation (Note 2) Current Limit (Note 3) Dropout Voltage (Note 4) AIC1739s AIC1739-30 AIC1739-27 AIC1739-25 AIC1739-20 AIC1739-18 IO=0.1mA~IMAX IL=1mA TEST CONDITIONS VIN=4.0~12V VIN=5V, IL=0.1~300mA VIN=5V, VOUT=0V IL=0.1mA IL=300mA IL=300mA IL=300mA IL=300mA IL=300mA VIN=4~12V MIN. TYP. 3 7 MAX. 10 25 UNIT mV mV mA 320 440 0.2 540 570 610 820 920 55 10 640 670 710 970 1070 80 mV Ground Current Note 1: Note 2: Note 3: Note 4: A 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. n TYPICAL 1000 900 800 PERFORMANCE CHARACTERISTICS Dropout Voltage vs Load Current V OUT=1.8V V OUT=2.0V VOUT COUT=1F VOUT =3.0V 100mV/DIV Load Transient Response Dropout Voltage (mV) 700 600 500 400 300 200 100 0 0 50 100 150 200 250 300 V OUT =2.5V VOUT=2.7V VOUT =3.0V IOUT IOUT=0.1mA IOUT=150mA Load Current (mA) Time (0.5mS/DIV) 3 AIC1739 n TYPICAL C OUT =10F PERFORMANCE CHARACTERISTICS (Continued) Load Transient Response COUT =1 F IL=1mA 20mV/DIV VIN =6V VIN VIN =4.0V VOUT=3.0V Line Transient Response VOUT IOUT=150mA I OUT =0.1mA VOUT I OUT VOUT=3.0V 20mV/DIV Time (0.5mS/DIV) Time (1mS/DIV) Recommended max. Output Current vs. Input voltage 400 350 Dropout Voltage (mV) 300 250 200 150 100 50 0 3.0V 2.7V 2.5V 1.8V 2.0V 3 4 5 6 7 8 9 10 11 12 Input Voltage (V) n BLOCK DIAGRAM VIN VOUT CURRENT LIMITING ERROR AMP THERMAL SHUTDOWN - + 1.235V Reference - GND 4 AIC1739 n PIN DESCRIPTION VOUT PIN - Output pin. GND PIN - Power GND. VIN PIN - Power Supply Input. n APPLICATION INFORMATIONS A 1F (or greater) capacitor is required between the AIC1739 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 A 0.1F capacitor (or greater) should be placed from the AIC1739 input to ground if the lead inductance between the input and power source exceeds 500nH (approximately 10 inches of trace). value of this capacitor may be increased without limit. n PHYSICAL DIMENSIONS l 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. AIC1739-18 AIC1739-20 AIC1739-25 AIC1739-27 AIC1739-30 Marking AY18 AY20 AY25 AY27 AY30 5 AIC1739 l 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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