LT1965 LINER [Linear Technology], LT1965 Datasheet
LT1965
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LT1965 Summary of contents
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FEATURES n Outputs May be Paralleled for Higher Current and Heat Spreading n Output Current Single Resistor Programs Output Voltage n 50μA Set Pin Current: 1% Initial Accuracy n Output Adjustable Low Output Noise: 40μV ...
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LT3083 ABSOLUTE MAXIMUM RATINGS (Note 1) All Voltages Relative to V OUT CONTROL Pin Voltage .............................................±28V IN Pin Voltage (T5, Q Packages) ....................18V, –0.3V No Overload or Short-Circuit .....................23V, –0.3V IN Pin Voltage (DF, FE Packages) .....................8V, –0.3V No Overload ...
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ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LT3083IQ#PBF LT3083IQ#TRPBF LT3083IT#PBF LT3083IT#TRPBF LT3083MPDF#PBF LT3083MPDF#TRPBF LT3083MPFE#PBF LT3083MPFE#TRPBF LT3083MPQ#PBF LT3083MPQ#TRPBF LT3083MPT#PBF LT3083MPT#TRPBF LEAD BASED FINISH TAPE AND REEL LT3083EDF LT3083EDF#TR LT3083EFE LT3083EFE#TR LT3083EQ LT3083EQ#TR LT3083ET LT3083ET#TR LT3083IDF LT3083IDF#TR LT3083IFE LT3083IFE#TR LT3083IQ LT3083IQ#TR ...
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LT3083 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T PARAMETER V Dropout Voltage (Note 4) CONTROL V Dropout Voltage (Note Pin Current (Note 5) CONTROL Current Limit Error Amplifi er RMS Output Noise (Note 6) ...
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TYPICAL PERFORMANCE CHARACTERISTICS SET Pin Current 50.5 50.4 50.3 50.2 50.1 50.0 49.9 49.8 49.7 49.6 49.5 –50 – 100 125 TEMPERATURE (°C) 3083 G01 Offset Voltage Distribution N = 1052 –3 –2 – ...
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LT3083 TYPICAL PERFORMANCE CHARACTERISTICS Dropout Voltage, FE/DF Packages 400 350 T = 125°C J 300 250 T = 25°C J 200 150 T = –50°C J 100 0.5 1 1.5 2 2.5 LOAD CURRENT (A) 3083 G10 ...
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TYPICAL PERFORMANCE CHARACTERISTICS Load Transient Response 150 100 CONTROL OUT 0.1μF 50 SET 0 –50 C OUT –100 1.0 0.5 ΔI LOAD ...
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LT3083 TYPICAL PERFORMANCE CHARACTERISTICS Ripple Rejection, Single Supply 100 I = 0.1A LOAD 1.5A LOAD 0.5A LOAD 10μF CERAMIC OUT 0.1μF CERAMIC SET RIPPLE ...
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PIN FUNCTIONS (DF/FE/Q/T Packages) OUT (Pins 1-5,13/Pins 1-6,8,9,16,17/ Pin 3, Tab/Pin 3, Tab): Output. The exposed pad of the DF package (Pin 13) and the FE package (Pin 17) and the Tab of the DD-PAK and TO-220 packages is an ...
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LT3083 BLOCK DIAGRAM CONTROL 50μA + – SET 3083 BD OUT 3083f ...
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APPLICATIONS INFORMATION The LT3083 regulator is easy to use and has all the protection features expected in high performance regulators. Included are short-circuit protection and safe operating area protec- tion, as well as thermal shutdown with hysteresis. The LT3083 fi ...
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LT3083 APPLICATIONS INFORMATION Table 1 lists many common output voltages and the clos- est standard 1% resistor values used to generate that output voltage. Regulation of the output voltage requires a minimum load current of 1mA. For a true zero ...
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APPLICATIONS INFORMATION When longer supply lines, fi lters, current sense resistors, or other impedances exist between the supply and the input to the LT3083, input bypassing should be reviewed if stability concerns are seen. Just as output capacitance supplies the ...
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LT3083 APPLICATIONS INFORMATION 20 BOTH CAPACITORS ARE 16V, 1210 CASE SIZE, 10μF 0 X5R –20 –40 –60 Y5V –80 –100 BIAS VOLTAGE (V) Figure 3. Ceramic Capacitor DC Bias Characteristics 40 20 ...
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APPLICATIONS INFORMATION resistance of 10mΩ (5mΩ for the two devices in paral- lel) only adds about 30mV of output regulation drop at an output of 6A. With an output voltage of 3.3V, this only adds 1% to the regulation. Of ...
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LT3083 APPLICATIONS INFORMATION Thermal Considerations The LT3083’s internal power and thermal limiting circuitry protects itself under overload conditions. For continuous normal load conditions, do not exceed the 125°C maximum junction temperature. Carefully consider all sources of thermal resistance from junction-to-ambient. ...
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APPLICATIONS INFORMATION The power in the drive circuit equals – V )(I DRIVE CONTROL OUT CONTROL where I is equal to I /60. I CONTROL OUT of output current. A curve of I CONTROL in the Typical ...
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LT3083 APPLICATIONS INFORMATION The second technique for reducing power dissipation, shown in Figure 8, uses a resistor in parallel with the LT3083. This resistor provides a parallel path for current fl ow, reducing the current fl owing through the LT3083. ...
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TYPICAL APPLICATIONS Adding Shutdown IN LT3083 CONTROL + – SET Q1 ON OFF R1 VN2222LL SHUTDOWN * Q2 INSURES ZERO OUTPUT IN THE ABSENCE OF ANY OUTPUT LOAD. SPI LTC2641 V IN 10V V CONTROL 10μF OUT ...
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LT3083 TYPICAL APPLICATIONS LT3083 20V V CONTROL + – C1 10μF SET R1 49.9k 4.8V to 20V 12V TO 18V V CONTROL + 15μF SET 20 Coincident Tracking LT3083 IN V CONTROL ...
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TYPICAL APPLICATIONS 10k V IN 50V BUZ11 + 10μF Ramp Generator LT3083 CONTROL + 10μF – SET VN2222LL 10nF 5V 10μF *4mV DROP ENSURES LT3083 IS OFF WITH NO LOAD MULTIPLE LT3083’S CAN BE USED ...
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LT3083 TYPICAL APPLICATIONS Low Voltage, High Current Adjustable High Effi ciency Regulator † SV 2. 2× LTC3610 2.2MEG 100k 100μF PGOOD RUN/SS 1000pF SGND *DIFFERENTIAL VOLTAGE ON LT3083 IS 0.6V SET BY THE V ...
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TYPICAL APPLICATIONS † V 4.5V TO 25V IN BD 10μF 1μF 100k RUN/SS 0.1μF V CONTROL 15.4k RT 63.4k 680pF 600kHz *DIFFERENTIAL VOLTAGE ON LT3083 ≈ 1.4V SET BY THE TPO610L P-CHANNEL THRESHOLD. † MAXIMUM OUTPUT VOLTAGE IS 2V BELOW ...
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LT3083 PACKAGE DESCRIPTION (.141) 6.60 0.10 4.50 0.10 SEE NOTE 4 RECOMMENDED SOLDER PAD LAYOUT 4.30 – 4.50* (.169 – .177) 0.09 – 0.20 0.50 – 0.75 (.0035 – .0079) (.020 – .030) NOTE: 1. CONTROLLING DIMENSION: MILLIMETERS MILLIMETERS 2. ...
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PACKAGE DESCRIPTION 3.38 0.05 4.50 0.05 2.65 0.05 3.10 0.05 RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED PIN 1 TOP MARK (NOTE 6) 0.200 REF NOTE: 1. DRAWING IS PROPOSED TO BE ...
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LT3083 PACKAGE DESCRIPTION .060 .256 (1.524) (6.502) .060 .183 (1.524) (4.648) .075 (1.905) .300 (7.620) BOTTOM VIEW OF DD PAK HATCHED AREA IS SOLDER PLATED COPPER HEAT SINK .067 RECOMMENDED SOLDER PAD LAYOUT NOTE: 1. DIMENSIONS IN INCH/(MILLIMETER) 2. DRAWING ...
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PACKAGE DESCRIPTION .390 – .415 (9.906 – 10.541) .230 – .270 (5.842 – 6.858) .460 – .500 (11.684 – 12.700) .330 – .370 (8.382 – 9.398) .067 BSC .028 – .038 (1.70) (0.711 – 0.965) Information furnished by Linear Technology ...
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