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| AIC1086 1.5A Low Dropout Positive Adjustable Regulator n FEATURES l l l l l l n DESCRIPTION The AIC1086 is a low dropout three terminal regulator with 1.5A output current capability. The output voltage is adjustable with the use of a resistor divider or fixed 2.85V, 3.3V, 5V. Dropout is guaranteed at a maximum of 1.5V at maximum output current. Its low dropout voltage and fast transient response make it ideal for low voltage microprocessor applications. Internal current and thermal limiting provides protection against any overload condition that would create excessive junction temperatures. Dropout Voltage 1.3V at 1.5A 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 APPLICATIONS l l l l Post Regulator for Switching Supply. Battery Chargers. Constant-Current Regulators. PC Add-On Card. n TYPICAL APPLICATION CIRCUIT VIN 5V C1 + 10F 3 AIC1086 1 ADJ 2 VREF VREF=VOUT - VADJ=1.25V (typ.) VOUT 3.3V 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. RF1 125 1% + C2 RF2 10F 205 1% Adjustable Voltage Regulator VIN 5V C1 + 10F AIC1086-33 VOUT 3.3V + C2 10F GND Fixed Voltage Regulator Analog Integrations Corporation DS-1086-00 May 16, 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 AIC1086 n ORDERING INFORMATION AIC1 086-XXXX PACKAGING TYPE E: TO-252 M: TO-263 T: TO-220 Y: SOT-223 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 ORDER NUMBER AIC1086 CE (TO-252) PIN CONFIGURATION FRONT VIEW 1: ADJ 2: VOUT (TAB) 3: VIN 1 2 3 1 2 3 AIC1086 CT (TO-220) FRONT VIEW 1: ADJ 2: VOUT (TAB) 3: VIN 1 2 3 AIC1086 CY (SOT-223) FRONT VIEW 1: ADJ 2: VOUT (TAB) 3: VIN 1 2 3 n ABSOLUTE MAXIMUM RATINS VIN pin to ADJ/GND pin .............................. ... .......... ... .......... ... ... ... ... ...................... 7V ..................... ... ... ...................... 0C ~ 125C Operating Junction Temperature Range Storage Temperature Range .................................. ... ... ... ................. - 65C ~ 150C TO-220 ... ... ... ........... ... ...... ... ... ... ... 3C /W TO-263 ... ....... ... ....... ... ... ... ... ... ... ... . 3C /W SOT-223 Lead Temperature (Soldering) 10 sec. ... ....... ... ..... ... ... ..... ... ... ..15C /W Thermal Resistance (Junction to Case) ........................ ... ... ............... ... ... ...... .......260C 2 AIC1086 n ELECTRICAL CHARACTERISTICS specified) PARAMETER Reference Voltage (VIN=5V, T J=25C, IO=10mA, Unless otherwise TEST CONDITIONS AIC1086 (Adj.) TJ =25C 0CTJ 125C AIC1086-28, VIN=5V MIN. TYP. MAX. UNIT 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 Output Voltage AIC1086-33, VIN=5V AIC1086-50, VIN=7V 2.65VIN 7V V Line Regulation TJ =25C 0CTJ 125C 0.015 0.035 0.1 0.2 0.2 0.2 0.3 0.4 % Load Regulation TJ =25C, IO=10mA ~1.5A 0CTJ 125C VOUT, VREF =1% % Dropout Voltage IO=1.5A 0CTJ 125C 0CTJ 125C 2.65VIN 7V 10mAIO 1.5A 0CTJ 125C 2.65VIN 7V 1.3 1.5 V Current Limit 1.5 2.0 A Adjusted Pin Current (IADJ) 55 120 A Adjusted Pin Current Change (IADJ) 10mAIO1.5A 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 AIC1086 n TYPICAL 0.1 PERFORMANCE CHARACTERISTICS Load Transient Response Line Transient Response Output Voltage (mV, AC) V IN=5V C IN=1 F C OUT=10F (Tantalum) V OUT=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) Minimum Differential Voltage (V) 1.30 1.28 1.26 1.24 1.22 1.20 1.18 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 0 200 400 600 800 1000 1200 1400 1600 Output Current (mA) Differential Voltage (V) 4 AIC1086 n BLOCK DIAGRAM VIN Current Amp. + VREF + 1.25V - GM Thermal Limit 55 A Current Limit VOUT For fixed voltage device ADJ GND n PIN DESCRIPTIONS ADJ PIN (GND PIN VOUT PIN VIN PIN Providing VREF=1.25V (typ.) for adjustable VOUT. VREF=VOUT-V ADJ and IADJ=55A (typ.) Power ground.) Adjustable output voltage. Power Input. 5 AIC1086 n PHYSICAL DIMENSIONS l TO-220 (unit: mm) A E F 3.810.27 SYMBOL A D E 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 e e1 e2 F J1 L L e1 J1 e e2 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 b e A1 10.42 - L 6 AIC1086 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. AIC1086CY AIC1086-28CY AIC1086-33CY AIC1086-50CY Marking 1086 AX28 AX33 AX50 l TO-263 (unit: mm) E A SYMBOL A C2 MIN 4.06 0.50 1.14 1.14 8.63 9.65 14.60 2.28 - MAX 4.83 1.00 1.40 0.7 1.40 9.66 10.29 15.88 2.80 1.40 L2 b b2 C L D L1 c2 D E e e C 2.54 (TYP.) b2 b L L1 L2 7 |
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