AIC1723 500mA Low Dropout Linear Regulator FEATURES Low Dropout Voltage of 750mV at 500mA Output Current (5.0V Output Version). Guaranteed 500mA Output Current. Internal 1.5Ω P-MOSFET Draws no Base Current. Low Ground Current at 65µA. 2% Accuracy Output Voltage of 3.3V/ 3.5V/ 3.7V/ 3.8V/ 5.0V/ 5.2V. Input Voltage Range up to 12V (5.0V Output Version). Needs only 4.7µF for Stability. Current and Thermal Limiting. AIC1723 include zero base current loss, very low dropout voltage, and 2% accuracy output voltage. The AIC1723 is a 3-pin low dropout linear regulator. The superior characteristics of the DESCRIPTION Typical ground current remains approximately 65µA, from no load to maximum loading conditions. Dropout voltage at 500mA output current is exceptionally low: 750mV for the AIC1723-50 and AIC1723-52, 900mV for the AIC1723-38, AIC1723-37, AIC1723-35, and the AIC1723-33. Output current limiting and thermal limiting are built in to provide maximal protection to the AIC1723 against fault conditions. APPLICATIONS The AIC1723 comes in the popular SOT-223, Voltage Regulator for CD-ROM Drivers. Voltage Regulator for LAN Cards. Voltage Regulator for Monitor Microprocessor. Voltage Regulator for RAM Module. Wireless Communication Systems. Battery Powered Systems. TO-251 and TO-252 packages. TYPICAL APPLICATION CIRCUIT VIN VOUT AIC1723 VIN + 1µF CIN GND VOUT + 10µF COUT Low Dropout Linear Regulator Analog Integrations Corporation 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC DS-1723-01 TEL: 886-3-5772500 May 3, 00 FAX: 886-3-5772510 www.analog.com.tw 1 AIC1723 ORDERING INFORMATION PACKAGING TYPE E: TO-252 F: TO-251 Y: SOT-223 ET: TO-252 TEMPERATURE RANGE C: 0°C~+70°C AIC1723-33CE AIC1723-35CE AIC1723-37CE AIC1723-38CE AIC1723-50CE AIC1723-52CE (TO-252) FRONT VIEW 1: VOUT 2: GND 3: VIN 1 2 3 FRONT VIEW 1: VIN 2: GND 3: VOUT 1 2 3 AIC1723-33CF AIC1723-35CF AIC1723-37CF AIC1723-38CF AIC1723-50CF AIC1723-52CF (TO-251) FRONT VIEW 1: VOUT 2: GND 3: VIN 1 2 3 AIC1723-33CY AIC1723-35CY AIC1723-37CY AIC1723-38CY AIC1723-50CY AIC1723-52CY (SOT-223) FRONT VIEW 1: VOUT 2: GND 3: VIN AIC1723-33CET AIC1723-35CET AIC1723-37CET AIC1723-38CET AIC1723-50CET AIC1723-52CET (TO-252) OUTPUT VOLTAGE 33: 3.3V 35: 3.5V 37: 3.7V 38: 3.8V 50: 5.0V PIN CONFIGURATION ORDER NUMBER AIC1723-XXXX 1 2 3 ABSOLUTE MAXIMUM RATINGS Input Supply Voltage ...................................………….................................... -0.3~12V Operating Junction Temperature Range Storage Temperature Range .......……….............................. -40°C~ 125°C .........................………….......................... -65°C~150°C Power Dissipation....…………………………………..……………..……............... 0.85W Thermal Resistance θJC TO-251, TO-252 Package....…….…….......... 12.5°C/W SOT-223 Package ....…………..……….............15°C/W TEST CIRCUIT Refer to the TYPICAL APPLICATION CIRCUIT 2 AIC1723 ELECTRICAL CHARACTERISTICS (Ta=25°°C, CIN=1µ µF, COUT=10µ µF, unless otherwise specified.) PARAMETER Output Voltage Output Voltage Temperature Coefficiency Line Regulation Load Regulation (Note 2) Current Limit (Note 3) TEST CONDITIONS No Load AIC1723-52 AIC1723-50 AIC1723-38 AIC1723-37 AIC1723-35 AIC1723-33 (Note 1) VIN=5.5~12V VIN=5.5~12V VIN=4.7~12V VIN=4.7~12V VIN=4.7~12V VIN=3.6~12V MIN. TYP. MAX. 5.100 4.900 3.725 3.625 3.430 3.234 5.2 5.0 3.8 3.7 3.5 3.3 5.300 5.100 3.875 3.775 3.570 3.366 VIN=5.5~12V VIN=5.5~12V VIN=4.7~12V VIN=4.7~12V VIN=4.7~12V VIN=4.7~12V VIN=7V, IL=0.1~500mA VIN=7V, IL=0.1~500mA VIN=5V, IL=0.1~500mA VIN=5V, IL=0.1~500mA VIN=5V, IL=0.1~500mA VIN=5V, IL=0.1~500mA VIN=7V, VOUT=0V VIN=7V, VOUT=0V VIN=5V, VOUT=0V VIN=5V, VOUT=0V VIN=5V, VOUT=0V VIN=5V, VOUT=0V 3 3 3 3 3 3 20 20 20 20 20 20 650 650 650 650 650 650 V PPM/°C 50 IL=1mA AIC1723-52 AIC1723-50 AIC1723-38 AIC1723-37 AIC1723-35 AIC1723-33 AIC1723-52 AIC1723-50 AIC1723-38 AIC1723-37 AIC1723-35 AIC1723-33 AIC1723-52 AIC1723-50 AIC1723-38 AIC1723-37 AIC1723-35 AIC1723-33 UNIT 10 10 10 10 10 10 50 50 50 50 50 50 mV mV mA 3 AIC1723 ELECTRICAL CHARACTERISTICS (Continued) PARAMETER TEST CONDITIONS AIC1723s AIC1723-52 AIC1723-50 AIC1723-38 AIC1723-37 AIC1723-35 AIC1723-33 IO=0.1mA~IMAX AIC1723-52 AIC1723-50 AIC1723-38 AIC1723-37 AIC1723-35 AIC1723-33 Dropout Voltage (Note 4) Ground Current MIN. TYP. MAX. UNIT IL=0.1mA IL=500mA IL=500mA IL=500mA IL=500mA IL=500mA IL=500mA 0.2 750 750 900 900 900 900 10 850 850 1050 1050 1050 1050 mV VIN=5.5~12V VIN=5.5~12V VIN=4.7~12V VIN=4.7~12V VIN=4.7~12V VIN=4~12V 65 65 65 65 65 65 90 90 90 90 90 90 µA Note 1: Guaranteed by design. Note 2: Regulation is measured at constant junction temperature, using pulse testing with a low ON time. Note 3: Current limit is measured by pulsing a short time. Note 4: 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. TYPICAL PERFORMANCE CHARACTERISTICS Ground Current vs. Input Voltage Recommended Max. Output Current v.s. Input Voltage 60 3.3V 600 Output Current IOUT (mA) Ground Current (µA) 50 40 30 20 10 3.7V, 3.8V 3.5V 500 400 5V, 5.2V 300 3V 200 100 0 0 2 4 6 8 Input Voltage (V) 10 12 4 5 6 7 8 9 Input Voltage VIN (V) 10 11 12 4 AIC1723 TYPICAL PERFORMANCE CHARACTERISTICS Line Regulation Response Output Voltage (mV, AC) Output Voltage (mV, AC) Load Transient Response (Continued) 100 100 50 50 0 COUT=10µF (Tantalum) VOUT=5.0V -50 0 COUT=1µF (Tantalum) IL=1mA VOUT=5.0V -50 Input Voltage (V) Load Current (mA) 100 250 0.1 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 8 6 2.0 0 0.1 0.2 Time (mS) 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 Time (mS) Load Transient Response Dropout Voltage vs Load Current Output Voltage (mV, AC) 800 200 Dropout Voltage (mV) 700 100 0 COUT=1µF (Tantalum) VOUT=5.0V Load Current (mA) -100 100 250 0.1 0 600 VOUT =3.3V,3.5V, 3.7V & 3.8V 500 400 VOUT=5.0V, 5.2V 300 200 100 0.2 0.4 0.6 0.8 1.0 1.2 Time (mS) 1.4 1.6 1.8 2.0 0 100 200 300 400 500 Load Current(mA) BLOCK DIAGRAM VIN VOUT CURRENT LIMITING ERROR AMP + - + THERMAL SHUTDOWN 1.235V Reference GND 5 AIC1723 PIN DESCRIPTION VOUT PIN - Output pin. GND PIN - Power GND. VIN PIN - Power Supply Input. APPLICATION INFORMATIONS A 4.7µF (or greater) capacitor is required between A 0.1µF capacitor (or greater) should be placed the AIC1723 output and ground for stability. from the AIC1723 input to ground if the lead Without this capacitor the part will oscillate. Even inductance between the input and power source though most types of capacitor may work, the exceeds 500nH (approximately 10 inches of equivalent series resistance (ESR) should be held trace). to 5Ω or less if Aluminum electrolytic type is used. Many Aluminum electrolytics have electrolytes that freeze at about -30°C, so solid tantalums are recommended for operation below -25°C. The value of this capacitor may be increased without limit. 6 AIC1723 PHYSICAL DIMENSIONS SOT-223 (unit: mm) D B1 ° 13° ± 3 E SYMBOL MIN MAX A1 0.02 0.12 B 0.60 0.80 B1 2.90 3.15 C 0.24 0.35 D 6.30 6.80 E 3.30 3.70 1.80 MAX H e A1 B 3 (PLCS) 13° ± 3° e H 6.70 7.30 SYMBOL MIN MAX A 2.19 2.38 A1 1.02 1.27 b 0.55 0.89 b2 5.21 5.46 C 0.46 0.58 C1 0.46 0.58 D 5.33 5.59 E 6.35 6.73 C 0.91 MIN 2.30 (TYP.) 0° ~ 10° 13° ± 3° SOT-223 MARKING Part No. Marking Part No. Marking AIC1723-33 AJ33 AIC1723-38 AJ38 AIC1723-35 AJ35 AIC1723-50 AJ50 AIC1723-37 AJ37 AIC1723-52 AJ52 TO-251 (unit: mm) E A b2 C1 D L C b e 2.28 (TYP.) L 7.62 (TYP.) A1 e 7 AIC1723 TO-252 (unit: mm) E C1 b2 A D H L b e A1 SYMBOL A A1 b b2 C1 D E e H L MIN MAX 2.19 2.38 1.02 1.27 0.64 0.88 5.21 5.46 0.46 0.58 5.33 5.59 6.35 6.73 2.28 (TYP.) 9.40 10.42 0.51 - 8