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| 1.5A LOW DROPOUT VOLTAGE REGULATOR (Adjustable & Fixed) FEATURES Low Dropout Voltage 500mV at 1.5A Output Current Fast Transient Response 0.015% Line Regulation 0.1% Load Regulation Internal Thermal and Current Limiting Adjustable or Fixed Output Voltage(1.5, 2.5, 2.85, 3.0, 3.3, 5.0V) Surface Mount Package SOT-223 & TO-263 (D2 Package) 100% Thermal Limit Burn-in LM1086 SOT-223 PKG (FRONT VIEW) 1 2 3 PIN FUNCTION 1. Adj/Gnd 2. Vout 3. Vin TO-263 (D2 PKG, FRONT VIEW) APPLICATIONS Battery Charger Adjustable Power Supplies Constant Current Regulators Portable Instrumentation High Efficiency Linear Power Supplies High Efficiency "Green" Computer Systems SMPS Post-Regulator Power PC Supplies Powering VGA & Sound Card PIN FUNCTION 1. Adj/Gnd 2. Vout 3. Vin 1 2 3 ORDERING INFORMATION Device & Marking LM1086S-XX LM1086T-XX Package SOT 223 TO263 (D2) DESCRIPTION (XX=Vout=1.5V, 2.5V, 2.85V, 3.0V, 3.3V, 5.0V Adjustable= AD) The LM1086 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. Dropout is guaranteed at a maximum of 500 mV at maximum output current. It's 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 temperature. TEST & TYPICAL APPLICATION CIRCUIT VIN 5V + C1 10 RF2 205 1% 3 2 LM1086 1 ADJ VREF RF1 124 1% VOUT 3.33V VREF=VOUT-VADJ=1.25V(Typ.) VOUT=VREFx(1+RF2/RF1)+IADJxRF2 IADJ=55(Typ.) C2 10 (1) C1 Needed if device is far away from filter capacitors. (2) C2 Required for stability Adjustable Voltage Regulator HTC 1 1.5A LOW DROPOUT VOLTAGE REGULATOR(ADJ) ABSOULTE MAXIMUM RATINS CHARACTERISTIC Supply Voltage Operating Junction Temperature Range Storage Temperature Range Thermal Resistance Junction to Case TO-263 Thermal Resistance Junction to Ambient TO-263 Lead Temperature (Soldering) 10 sec. Maximum Output Current SYMBOL Vin Topr Tstg Tjc Tja Tsol Imax OUT =100, LM1086 VALUE 7 0~125 -65~150 3 60 300 1.5 UNIT V C/W C/W A ELECTRICAL CHARACTERISTICS I PARAMETER 1.5V Version Output Voltage 2.5V Version Output Voltage 2.85V Version Output Voltage 3.0V Version Output Voltage 3.3V Version Output Voltage 5.0V Version Output Voltage All Voltage Options Reference Voltage (V REF) Min. Load Current(Note 3) Line Regulation (V REF(VIN)) Load Regulation (V REF(VOUT)) Dropout Voltage Current Limit IOUT(MAX) Long Term Stability Thermal Regulation (VOUT(Pwr)) Output Noise, RMS Thermal Resistance T A=25, unless otherwise specified MIN TYP MAX UNIT TEST CONDITIONS 0 1.5 1.515 V 0 2.5 2.525 V 0 2.85 2.879 V 0 3 3.03 V 0 3.3 3.33 V 0IOUT1.5A, 5.5VVIN<7V 4.95 5 5.05 V VIN7V,PPMAX V 1.5V(VIN- OUT)5.75V, 10IOUT1.5A 1.5V(VIN- OUT)5.75V V 2.75VVIN7V, IOUT=10, TJ=25 10IOUT1.5A,(VIN-VOUT)=3V,TJ=25 VREF=1% , Iout=1.5A Vin-Vout=3V 1.4V(VIN-VOUT) Adjustable Only TA=125, 1000Hrs TA=25, 30 pulse 10Hz to 10Khz TA=25 Junction to Tab Junction to Ambient 1.225 1.225 1.25 1.25 5 0.005 0.05 1.1 1.27 1.27 10 0.2 0.3 1.2 V mA % % V A 1.7 2.5 0.3 0.01 1 0.02 % %/W %/Vo 0.003 3 60 /W HTC 2 |
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