AIC1086 1.5A Low Dropout Positive Adjustable Regulator n FEATURES n DESCRIPTION l Dropout Voltage 1.3V at 1.5A Output Current. The AIC1086 is a low dropout three terminal l Fast Transient Response. regulator with 1.5A output current capability. The l Line Regulation typically at 0.015%. output voltage is adjustable with the use of a l Load Regulation typically at 0.1%. resistor divider or fixed 2.85V, 3.3V, 5V. Dropout l Internal Thermal and Current Limiting. is guaranteed at a maximum of 1.5V at l Adjustable Output Voltage or Fixed 2.85V, 3.3V, 5V. maximum output current. Its low dropout voltage l Standard 3-Pin Power Packages. and fast transient response make it ideal for low voltage microprocessor applications. Internal n APPLICATIONS current and thermal limiting provides protection l Post Regulator for Switching Supply. l Battery Chargers. l Constant-Current Regulators. l PC Add-On Card. against any overload condition that would create excessive junction temperatures. n TYPICAL APPLICATION CIRCUIT 3 VIN 5V C1 + 10µF AIC1086 1 ADJ VREF=VOUT - VADJ=1.25V (typ.) 2 VOUT 3.3V RF1 125Ω 1% + C2 RF2 10µF 205Ω 1% VREF VOUT=VREF x (1+RF2/RF1)+ IADJ x RF2 IADJ=55µA (typ.) (1) C1 needed if device is far away from filter capacitors. (2) C2 required for stability. Adjustable Voltage Regulator VIN 5V AIC1086-33 C1 + 10µF VOUT 3.3V + C2 10µF GND Fixed Voltage Regulator Analog Integrations Corporation 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC DS-1086-00 TEL: 886-3-5772500 May 16, 00 FAX: 886-3-5772510 www.analog.com.tw 1 AIC1086 n ORDERING INFORMATION AIC1 086-XXXX ORDER NUMBER PACKAGING TYPE E: TO-252 M: TO-263 T: TO-220 Y: SOT-223 AIC1086 CE (TO-252) PIN CONFIGURATION FRONT VIEW 1: ADJ 2: VOUT (TAB) 3: VIN 1 2 3 TEMPERATURE RANGE C: 0° C~+70 °C DEFAULT:ADJ. 28: 2.85V 33: 3.3V 50: 5.0V AIC1086CM (TO-2 63) FRONT VIEW 1: ADJ 2: VOUT (TAB) 3: VIN AIC1086 CT (TO-220) AIC1086 CY (SOT-223) 1 2 3 FRONT VIEW 1: ADJ 2: VOUT (TAB) 3: VIN 1 2 3 FRONT VIEW 1: ADJ 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 ..................… … … ...................... 0°C ~ 125°C ...............................… … … … ................. - 65°C ~ 150°C Thermal Resistance (Junction to Case) TO-220 … … … ........… … ...… … … … ... 3°C /W TO-263 … ....… … ....… … … … … … … … . 3°C /W SOT-223 Lead Temperature (Soldering) 10 sec. … ....… … ..… … … ..… … … ..15°C /W .....................… … … ............… … … ...… .......260°C 2 AIC1086 n ELECTRICAL CHARACTERISTICS (VIN=5V, T J=25°C, IO=10mA, Unless otherwise specified) PARAMETER Reference Voltage Output Voltage TEST CONDITIONS MIN. TYP. MAX. UNIT TJ =25°C 1.238 1.25 1.262 V 0°C≤TJ ≤125°C 1.225 1.25 1.275 AIC1086-28, VIN=5V 2.82 2.85 2.88 AIC1086-33, VIN=5V 3.26 3.30 3.33 AIC1086-50, VIN=7V 4.95 5.00 5.05 TJ =25°C 0.015 0.2 0°C≤TJ ≤125°C 0.035 0.2 TJ =25°C, IO=10mA ~1.5A 0.1 0.3 0°C≤TJ ≤125°C 0.2 0.4 1.3 1.5 AIC1086 (Adj.) V 2.65≤VIN ≤7V Line Regulation Load Regulation % % ∆VOUT, ∆VREF =1% Dropout Voltage IO=1.5A V 0°C≤TJ ≤125°C Current Limit 0°C≤TJ ≤125°C 1.5 2.0 A 2.65≤VIN ≤7V Adjusted Pin Current (IADJ) 10mA≤IO≤ 1.5A 55 120 µA 0.2 5 µA 0°C≤TJ ≤125°C 2.65≤VIN ≤7V Adjusted Pin Current Change (∆IADJ) 10mA≤IO≤1.5A 0°C≤TJ ≤125°C IO=0.5A Temperature Stability 0.5 0°C≤TJ ≤125°C % Minimum Load Current 0°C≤TJ ≤125°C 5 RMS Output Noise (% of VOUT) 10Hz≤f≤10KHz 0.003 % 72 dB Ripple Rejection Ratio 120Hz input ripple COUT=25µF 60 10 mA 3 AIC1086 n TYPICAL PERFORMANCE CHARACTERISTICS Load Transient Response Line Transient Response Output Voltage (mV, AC) Output Voltage (V, AC) 0.1 0.05 0 -0.05 V IN=5V C IN=1µ F C OUT=10µF (Tantalum) V OUT=3.3V 0.4A 0.1A 0 40 80 120 160 0 --50 COUT =10µ F (Tantalum) VOUT=3.3V --100 Input Voltage (V) Load Current -0.1 50 7.0 6.0 0 200 10 Time (µS) 30 40 50 Time (µS) Dropout Voltage (VOUT=3.3V) Minimum Operating Current 1.30 Minimum Operating Current (mA) Minimum Differential Voltage (V) 20 1.28 1.26 1.24 1.22 1.20 1.18 0 200 400 600 800 1000 Output Current (mA) 1200 1400 1600 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 1 2 3 4 5 Differential Voltage (V) 4 AIC1086 n BLOCK DIAGRAM VIN Current Amp. + - VREF + 1.25V GM Thermal Limit Current Limit 55 µA VOUT For fixed voltage device ADJ GND n PIN DESCRIPTIONS ADJ PIN (GND PIN - Providing VREF=1.25V (typ.) for adjustable VOUT. VREF=VOUT-V ADJ and IADJ=55µA (typ.) Power ground.) VOUT PIN - Adjustable output voltage. VIN PIN Power Input. - 5 AIC1086 n PHYSICAL DIMENSIONS l TO-220 (unit: mm) A E Φ3.81±0.27 F D SYMBOL MIN MAX A 3.56 4.82 D 14.23 16.51 E 9.66 10.66 e 2.29 2.79 e1 0.50 1.15 e2 - 1.10 F 0.51 1.39 J1 2.04 2.92 L 12.70 14.73 SYMBOL MIN MAX A 2.19 2.38 A1 1.02 1.27 b 0.64 0.88 b2 5.21 5.46 C1 0.46 0.58 D 5.33 5.59 E 6.35 6.73 L e1 J1 e l e2 TO-252 (unit: mm) E C1 b2 A D H L b e e 2.28 (TYP.) H 9.40 10.42 L 0.51 - A1 6 AIC1086 l SOT-223 1.80 MAX D B1 13 ° ± 3 E ° H e A1 B 13 ° ± 3 ° 3 (PLCS) 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 e C 2.30 (TYP.) H 6.70 7.30 SYMBOL MIN MAX A 4.06 4.83 b 0.50 1.00 b2 1.14 1.40 C - 0.7 c2 1.14 1.40 D 8.63 9.66 E 9.65 10.29 0° ~ 10 ° 0.91 MIN 13 ° ± 3 ° l SOT-223 Marking Part No. AIC1086CY AIC1086-28CY AIC1086-33CY AIC1086-50CY l Marking 1086 AX28 AX33 AX50 TO-263 (unit: mm) E A C2 L2 L D L1 e e b2 C b 2.54 (TYP.) L 14.60 15.88 L1 2.28 2.80 L2 - 1.40 7