LT1082 Linear Technology, LT1082 Datasheet
LT1082
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LT1082 Summary of contents
Page 1
... USER NOTE: This data sheet is only intended to provide specifications, graphs, and a general functional description of the LT1082. Application circuits are included to show the capability of the LT1082. A complete design manual (AN19) and Switcher CAD (LTC Switching Power Supply Design Program) should be obtained to assist in developing new designs. This manual contains a comprehensive discussion of both the LT1070 and the external components used with it, as well as complete formulas for calculating the values of these components ...
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... Error Amplifier Clamp Voltage Reference Voltage Line Regulation A Error Amplifier Voltage Gain V Minimum Input Voltage Operating Junction Temperature Range LT1082M ......................................... – 150 C LT1082I ........................................... – 125 C LT1082C ............................................... 100 FRONT VIEW GND 2 FB ...
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... MAX ) 0.6V Source Sink 0.7A (LT1082C 0.5A (LT1082M Duty Cycle = 20% Duty Cycle 50% Duty Cycle = 80% (Note 2) Duty Cycle = 20% Duty Cycle 50% Duty Cycle = 80% (Note 2) Duty Cycle = 20% Duty Cycle 50% Duty Cycle = 80% (Note 0.05V IN MAX ...
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... LT1082 W U TYPICAL PERFOR A Suggested Core Size and Inductance for Telecom 5V Supply TYPE 52 KOOL M LOAD POWDERED OR MOLY- CURRENT IRON PERMALLOY 100mA T38 250 H T38 200 H 200mA T50 250 H T38 150 H 400mA T60 250 H T50 150 H 600mA T60 250 H T50 200 H 800mA ...
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... DUTY CYCLE 1.6 1.8 2.0 INPUT VOLTAGE (V) **UNDER VERY LOW OUTPUT CURRENT CONDITIONS, DUTY CYCLE FOR MOST CIRCUITS WILL APPROACH 10% OR LESS. 1082 G13 LT1082 1082 G10 125° 150° 100 1082 G17 60 50 ...
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... LT1082 W U TYPICAL PERFOR A Error Amplifier Transconductance 5000 I (V PIN 4500 m (FB PIN) V 4000 3500 3000 2500 2000 1500 1000 500 0 –75 – 100 125 150 –25 TEMPERATURE (°C) 1082 G18 Feedback Pin Clamp Voltage 800 700 T J 600 ...
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... A 1.2V bandgap reference biases the positive input of the error amplifier. The negative input is brought out for output voltage sensing. This feedback pin has a second function: when pulled low with an external resistor and with 200 A, it programs the LT1082 to FB LT1082 SWITCH OUT 16.2V ...
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... See “Thermal Considerations.” Thermal Considerations When Using the MiniDIP Packages The low supply current and high switch efficiency of the LT1082 allow used without a heat sink in most applications when the TO-220 package is selected. This package is rated at 50 C/W. The miniDIPs, however ...
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... Synchronizing oc- curs when the V transistor. To avoid disturbing the DC characteristics of the internal error amplifier, the width of the synchronizing pulse should be under sets the pulse width at 0.6 s. The effect of a synchronizing pulse on the LT1082 amplifier offset can be calculated from KT/q = 26mV ...
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... H MUR110 LT1082 FB GND MINIMUM LOAD OF 0.15A IS REQUIRED 0. FOR EACH OUTPUT. (SEE AN19) Boost Converter 1mH, 1A MUR110 LT1082 + FB GND V C 4.7k 0.033 F 0.22 F MUR110 15V AT 0.3A + 200 F 1 COM 1 + 200 F –15V AT 0.3A MUR110 1082 TA03 VOUT 90V AT 120mA 78 ...
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... MIN 0.050 ± 0.008 (1.270 ± 0.203) +0.008 0.004 –0.004 +0.203 0.102 –0.102 0.105 ± 0.008 (2.667 ± 0.203) 0.050 ± 0.012 (1.270 ± 0.305) LT1082 0.220 – 0.310 (5.588 – 7.874) 11 ...
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... LT1082 PACKAGE DESCRIPTIO 0.380 – 0.420 (9.652 – 10.668) 0.139 – 0.153 (3.531 – 3.886) DIA 0.560 – 0.650 (14.224 – 16.510) 0.057 – 0.077 (1.448 – 1.956) Linear Technology Corporation 12 1630 McCarthy Blvd., Milpitas, CA 95035-7487 (408) 432-1900 : (408) 434-0507 FAX ...