LT1083/LT1084/LT1085 Fixed - 3A, 5A, 7.5A Low …

1 LT1083/LT1084/LT1085 Fixed11083ffeFor more information applicaTionDescripTion3A, 5A, Low DropoutPositive Fixed RegulatorsThe LT 1083 series of positive adjustable regulators are designed to provide 3A, 5A and with higher efficiency than currently available devices. All internal circuitry is designed to operate down to 1V input to output differential and the dropout voltage is fully specified as a function of load current. Dropout is guaranteed at a maximum of at maximum output current, decreasing at lower load currents.

2 On-chip trimming adjusts the output voltage to 1%. Current limit is also trimmed, minimizing the stress on both the regulator and power source circuitry under overload LT1083 series devices are pin compatible with older three-terminal regulators. A 10 F output capacitor is required on these new devices; however, this is usually included in most regulator PNP regulators, where up to 10% of the output cur-rent is wasted as quiescent current, the LT1083 quiescent current flows into the load, increasing nThree-Terminal , , 5V and 12V nOutput Current of 3A, 5A or nOperates Down to 1V Dropout nGuaranteed Dropout Voltage at Multiple Current Levels nLine Regulation: nLoad Regulation.

3 N100% Thermal Limit Functional Test nAdjustable Versions Available nHigh Efficiency Linear Regulators nPost Regulators for Switching Supplies nConstant Current Regulators nBattery ChargersDEVICEOUTPUT CURRENT*LT1083 lt1084 Amps Amps Amps*For a low dropout regulator see the LT1086 data , RegulatorVIN 5V AT TA0122 F*TANTALUM+10 F+*REQUIRED FOR STABILITYD ropout Voltage vs Output CurrentOUTPUT CURRENT (A)0 INPUT/OUTPUT VOLTAGE DIFFERENTIAL (V)2101083/4/5 TA02 IFULLLOAD/2 IFULLLOADL, LT, LT C, LT M, Linear Technology, the Linear logo and OPTI-LOOP are registered trademarks and UltraFast is a trademark of Linear Technology Corporation.

4 All other trademarks are the property of their respective Fixed21083ffeFor more information MaxiMuM raTingsorDer inForMaTionPower Dissipation .. Internally LimitedInput Voltage* .. 30 VOperating Input Voltage , Devices .. 20V 5V Devices .. 20V 12V Devices .. 25 VOperating Junction Temper atur e Range C- Grades: Control Section .. 0 C to 125 C Power Transistor .. 0 C to 150 C I- Grades: Control Section .. 40 C to 125 C Power Transistor .. 40 C to 150 C M-Grades: (OBSOLETE) Control Section.

5 55 C to 150 C Power Transistor .. 55 C to 200 CStorage Temper atur e Range .. 65 C to 150 CLead Temper atur e (Soldering, 10 sec) .. 300 C100% Thermal Limit Functional Test.*Although the devices maximum operating voltage is limited, (20V for a 3V, 5V device, and 25V for a 12V device) the devices are guaranteed to withstand transient input voltages up to 30V. For input voltages greater than the maximum operating input voltage some degradation of specifications will occur. For input/output voltage differentials greater than 15V, a minimum external load of 5mA is required to maintain regulation.

6 (Note 1)preconDiTioningTAB ISOUTPUTT PACKAGE3-LEAD PLASTIC TO-220 VINVOUTGNDFRONT VIEW321 JA = 50 C/WVINVOUTGNDP PACKAGE3-LEAD TO-3P PLASTICFRONT VIEWTAB ISOUTPUT321 JA = 35 C/WOBSOLETE PACKAGE12 VINCASE ISOUTPUTGNDK PACKAGE2-LEAD TO-3 METAL CAN JA = 35 C/WOBSOLETE PACKAGETAB ISOUTPUTM PACKAGE3-LEAD PLASTIC DDFRONT VIEWVINVOUTGND321 JA = 30 C/W**WITH PACKAGE SOLDERED TO COPPER AREA OVER BACKSIDE GROUND PLANE OR INTERNAL POWER PLANE. JA CAN VARY FROM 20 C/W TO >40 C/W DEPENDING ON MOUNTING TECHNIQUELT1083/ lt1084 / lt1085 Fixed31083ffeFor more information inForMaTionLEAD FREE FINISHTAPE AND REEL PART MARKINGPACKAGE DESCRIPTIONTEMPERATURE RANGELT1083CP-5#PBFNALT1083CP-53-Lead Plastic TO-3 PControl: 0 C to 125 C Power: 0 C to 150 CLT1083CP-12#PBFNALT1083CP-123-Lead Plastic TO-3 PControl: 0 C to 125 C Power: 0 C to 150 CLT1084CP-5#PBFNALT1084CP-53-Lead Plastic TO-3 PControl: 0 C to 125 C Power.

7 0 C to 150 CLT1084CP-12#PBFNALT1084CP-123-Lead Plastic TO-3 PControl: 0 C to 125 C Power: 0 C to 150 COBSOLETE PACKAGELT1084C #PBFNALT1084CT- Plastic TO-220 Control: 0 C to 125 C Power: 0 C to 150 CLT1084C T-5#PBFNALT1084C T-53-Lead Plastic TO-220 Control: 0 C to 125 C Power: 0 C to 150 CLT1084C T-12#PBFNALT1084CT- 123-Lead Plastic TO-220 Control: 0 C to 125 C Power: 0 C to 150 CLT1085C #PBFNALT1085CT- Plastic TO-220 Control: 0 C to 125 C Power: 0 C to 150 CLT1085C #PBFNALT1085CT- Plastic TO-220 Control: 0 C to 125 C Power: 0 C to 150 CLT1085C T-5#PBFNALT1085CT- 53-Lead Plastic TO-220 Control: 0 C to 125 C Power: 0 C to 150 CLT1085C T-12#PBFNALT1085-123-Lead Plastic TO-220 Control: 0 C to 125 C Power: 0 C to 150 # # Plastic DDControl: 0 C to 125 C Power: 0 C to 150 # # Plastic DDControl: 0 C to 125 C Power: 0 C to 150 # # Plastic DDControl: 40 C to 125 C Power.

8 40 C to 150 CLEAD BASED FINISHTAPE AND REEL PART MARKINGPACKAGE DESCRIPTIONTEMPERATURE RANGELT1083CP-5 NALT1083CP-53-Lead Plastic TO-3 PControl: 0 C to 125 C Power: 0 C to 150 CLT1083CP-12 NALT1083CP-123-Lead Plastic TO-3 PControl: 0 C to 125 C Power: 0 C to 150 CLT1084CP-5 NALT1084CP-53-Lead Plastic TO-3 PControl: 0 C to 125 C Power: 0 C to 150 CLT1084CP-12 NALT1084CP-123-Lead Plastic TO-3 PControl: 0 C to 125 C Power: 0 C to 150 CLT1083CK-5 NALT1083CK-52-Lead TO-3 Metal CanControl: 0 C to 125 C Power: 0 C to 150 CLT1083CK-12 NALT1083CK-122-Lead TO-3 Metal CanControl: 0 C to 125 C Power: 0 C to 150 CLT1083MK-5 NALT1083MK-52-Lead TO-3 Metal CanControl: 55 C to 150 C Power: 55 C to 200 CLT1083MK-12 NALT1083MK-122-Lead TO-3 Metal CanControl: 55 C to 150 C Power: 55 C to 200 CLT1083/ lt1084 / lt1085 Fixed41083ffeFor more information inForMaTionLEAD BASED FINISHTAPE AND REEL PART MARKINGPACKAGE DESCRIPTIONTEMPERATURE RANGELT1084CK-5 NALT1084CK-52-Lead TO-3 Metal CanControl.

9 0 C to 125 C Power: 0 C to 150 CLT1084CK-12 NALT1084CK-122-Lead TO-3 Metal CanControl: 0 C to 125 C Power: 0 C to 150 CLT1084MK-5 NALT1084MK-52-Lead TO-3 Metal CanControl: 55 C to 150 C Power: 55 C to 200 CLT1084MK-12 NALT1084MK-122-Lead TO-3 Metal CanControl: 55 C to 150 C Power: 55 C to 200 CLT1085CK-5 NALT1085CK-52-Lead TO-3 Metal CanControl: 0 C to 125 C Power: 0 C to 150 CLT1085CK-12 NALT1085CK-122-Lead TO-3 Metal CanControl: 0 C to 125 C Power: 0 C to 150 CLT1085MK-5 NALT1085MK-52-Lead TO-3 Metal CanControl: 55 C to 150 C Power: 55 C to 200 CLT1085MK-12 NALT1085MK-122-Lead TO-3 Metal CanControl: 55 C to 150 C Power: 55 C to 200 COBSOLETE PACKAGELT1084C Plastic TO-220 Control: 0 C to 125 C Power: 0 C to 150 CLT1084C T-5 NALT1084C T-53-Lead Plastic TO-220 Control: 0 C to 125 C Power: 0 C to 150 CLT1084C T-12 NALT1084CT- 123-Lead Plastic TO-220 Control: 0 C to 125 C Power: 0 C to 150 CLT1085C Plastic TO-220 Control.

10 0 C to 125 C Power: 0 C to 150 CLT1085C Plastic TO-220 Control: 0 C to 125 C Power: 0 C to 150 CLT1085C T-5 NALT1085CT- 53-Lead Plastic TO-220 Control: 0 C to 125 C Power: 0 C to 150 CLT1085C T-12 NALT1085-123-Lead Plastic TO-220 Control: 0 C to 125 C Power: 0 C to 150 # Plastic DDControl: 0 C to 125 C Power: 0 C to 150 # Plastic DDControl: 0 C to 125 C Power: 0 C to 150 # Plastic DDControl: 40 C to 125 C Power: 40 C to 150 CConsult LTC Marketing for parts specified with wider operating temperature ranges.