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| AIC1117 800mA Low Dropout Positive Adjustable Regulator n FEATURES l l l l l l n DESCRIPTION The AIC1117 is a low dropout three terminal regulator with 800mA output current capability. The output voltage is adjustable with the use of a resistor divider. For fixed output voltage versions, the output voltage is internally set at 2.85V, 3.3V or 5V. Dropout is guaranteed at a maximum of 1.3V at maximum output current. Its low dropout voltage and fast transient response and make it ideal for low voltage microprocessor applications. Internal current thermal limiting provides protection against any overload condition that would create excessive junction temperatures. Dropout Voltage 1.2V at 800mA Output Current. Fast Transient Response. Line Regulation typically at 0.015%. Load Regulation typically at 0.1%. Internal Thermal and Current Limiting. Adjustable Output Voltage or Fixed 2.85V, 3.3V, 5V. Standard 3-Pin Power Packages. l n l l l l l APPLICATIONS SCSI-2 Active Terminator. Post Regulator for Switching Supply. Battery Chargers. Constant-Current Regulators. PC Add-On Card. n TYPICAL APPLICATION CIRCUIT VIN 5V C1 + 10 F 3 AIC1117 1 ADJ 2 VREF VREF=VOUT - VADJ=1.25V (typ.) VOUT 3.3V RF1 125 1% + C2 10F VOUT=VREF x (1+RF2/RF1)+ IADJ x RF2 IADJ=55A (typ.) (1) C1 needed if device is far away from filter capacitors. (2) C2 required for stability. RF2 205 1% Adjustable Voltage Regulator VIN 5V C1 + 10F 3 AIC1117-28 AIC1117-33 AIC1117-50 1 2 VOUT + C2 10F GND Fixed Voltage Regulator Analog Integrations Corporation DS-1117-00 Mar 13, 00 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 AIC1117 n ORDERING INFORMATION AIC1 117-XXXX PACKAGING TYPE E: TO-252 M: TO-263 T: TO-220 Y: SOT-223 TEMPERATURE RANGE C: 0 C~+70 C OUTPUT VOLTAGE DEFAULT: ADJ. 28: 2.85V 33: 3.3V 50: 5.0V ORDER NUMBER AIC1117CE (TO-2 52) PIN CONFIGURATION FRONT VIEW 1: ADJ (GND) 2: VOUT (TAB) 3: VIN 1 2 3 AIC1 117CM (TO-263) FRONT VIEW 1: ADJ (GND) 2: VOUT (TAB) 3: VIN 1 2 3 AIC1117CT (TO-220) FRONT VIEW 1: ADJ (GND) 2: VOUT (TAB) 3: VIN 1 2 3 AIC1117CY (SOT-223) FRONT VIEW 1: ADJ (GND) 2: VOUT (TAB) 3: VIN 1 2 3 n ABSOLUTE MAXIMUM RATINS VIN pin to ADJ/ GND pin .............................. ... .......... ... ........ ... ... ... ............................ 7V Operating Junction Temperature Range Storage Temperature Range ..................... ... ... ...................... 0C ~ 125C .................................. ... ... ... ................. - 65C ~ 150C TO-220 ... ... ... ........... ... ...... ... ... ... ... 3C /W TO-252 ... ....... ... ....... ... ... ... ... ... ..12.5C /W SOT-223 Lead Temperature (Soldering) 10 sec. ... ....... ... ..... ... ... ..... ... ... ..15C /W Thermal Resistance (Junction to Case) ........................ ... ... ............... ... ... ...... .......260C n TEST CIRCUIT Refer to TYPICAL APPLICATION CIRCUIT. 2 AIC1117 n ELECTRICAL CHARACTERISTICS specified) PARAMETER Reference Voltage AIC1117 (Adj.) TJ =25C 0CTJ 125C Output Voltage AIC1117-28, VIN=5V AIC1117-33, VIN=5V AIC1117-50, VIN=7V 2.65VIN 7V Line Regulation TJ =25C 0CTJ 125C Load Regulation (VIN =5V, T J=25C, IO=10mA, Unless otherwise MIN. TYP. MAX. UNIT TEST CONDITIONS 1.238 1.225 2.82 3.26 4.95 1.25 1.25 2.85 3.30 5.00 1.262 1.275 2.88 3.33 5.05 V V 0.015 0.035 0.1 0.2 0.2 0.2 0.3 0.4 % TJ =25C, IO=10~800mA 0CTJ 125C VOUT, VREF =1% 10mAIO800mA 0CTJ 125C 0CTJ 125C 2.65VIN 7V 10mAIO 800mA 0CTJ 125C 2.65VIN 7V % Dropout Voltage 1.2 1.4 V Current Limit 0.85 A Adjusted Pin Current (IADJ) 55 120 A Adjusted Pin Current Change (IADJ) 10mAIO800mA 0CTJ 125C IO=0.5A 0CTJ 125C 0CTJ 125C 10Hzf10KHz 120Hz input ripple COUT=25F 60 0.2 5 A Temperature Stability Minimum Load Current RMS Output Noise (% of VOUT) Ripple Rejection Ratio 0.5 5 0.003 72 10 % mA % dB 3 AIC1117 n TYPICAL 0.1 PERFORMANCE CHARACTERISTICS Load Transient Response Line Transient Response Output Voltage (mV, AC) VIN=5V C IN=1 F C OUT=10F (Tantalum) VOUT =3.3V 50 0 Output Voltage (V, AC) 0.05 0 -0.05 -0.1 --50 --100 0.4A Input Voltage (V) COUT =10 F (Tantalum) VOUT=3.3V Load Current 7.0 0.1A 6.0 0 40 80 120 160 200 0 10 20 30 40 50 Time (S) Time (S) Dropout Voltage (VOUT=3.3V) 1.19 Minimum Operating Current Minimum Operating Current (mA) 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 1 2 3 4 5 Minimum Differential Voltage (V) 1.18 1.17 1.16 1.15 1.14 0 100 200 300 400 500 600 700 800 900 Output Current (mA) Differential Voltage (V) 4 AIC1117 n BLOCK DIAGRAM VIN Current Amp. + GM VREF + 1.25V - Thermal Limit 55A Current Limit VOUT For fixed voltage device ADJ GND n PIN DESCRIPTIONS ADJ PIN Providing VREF=1.25V (typ.) for adjustable VOUT. VREF=VOUT-V ADJ and IADJ=55A (typ.) Power ground.) Adjustable output voltage. Power Input. (GND PIN VOUT PIN VIN PIN - n PHYSICAL DIMENSIONS l TO-220 (unit: mm) A E F 3.810.27 SYMBOL A D E e e1 e2 F J1 L MIN 3.56 14.23 9.66 2.29 0.50 0.51 2.04 12.70 MAX 4.82 16.51 10.66 2.79 1.15 1.10 1.39 2.92 14.73 D L e1 J1 e e2 5 AIC1117 l TO-252 (unit: mm) E b2 C1 A SYMBOL A A1 b MIN 2.19 1.02 0.64 5.21 0.46 5.33 6.35 2.28 (TYP.) 9.40 0.51 MAX 2.38 1.27 0.88 5.46 0.58 5.59 6.73 D H b2 C1 D E L e H L b e A1 10.42 - l SOT-223 D 1.80 MAX B1 13 3 SYMBOL A1 B B1 E H e A1 MIN 0.02 0.60 2.90 0.24 6.30 3.30 MAX 0.12 0.80 3.15 0.35 6.80 3.70 C D E e C B 3 (PLCS) 13 3 2.30 (TYP.) 6.70 7.30 H 0.91 MIN 13 3 0 ~ 10 l SOT-223 Marking Part No. AIC1117CY AIC1117-28 AIC1117-33 AIC1117-50 Marking AK17 AK28 AK33 AK50 6 AIC1117 l TO-263 (unit: mm) E A SYMBOL A C2 MIN 4.06 0.50 1.14 1.14 8.63 9.65 MAX 4.83 1.00 1.40 0.7 1.40 9.66 10.29 L2 b b2 C L D L1 c2 D E e e C 2.54 (TYP.) 14.60 2.28 15.88 2.80 1.40 b2 b L L1 L2 7 |
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