ry for Industrial grade parts. ELECTRICAL CHARACTERISTICS PARAMETER CONDITIONS MIN TYP MAX | UNITS Output Voltage LT1084-3.3 lout = OMA, Ty = 25C, Viy = 8V (K Package Only) 3.270 3.300 3.330 V 0 < Igur < 5A, 4.8V < Vin < 15V (Note 8) e 3.235 3.300 3.365 V LT1085-3.3 Vin = 5V, loyt = OMA, Ty = 25C (K Package Only) 3.270 3.300 3.330 Vv 4.BV < Vin < 15V, 0 < lour < 3A (Note 8) @ | 3235 3300 3.365 V LT1085-3.6 Vin = 5V, Igur = OmA, Ty = 25C (K Package Only) 3.564 3.600 3.636 V 5V < Vin s 15V, 0 < Iqur < 3A (Note 8) e 3.500 3.672 Vv 5V < Vins 15V, 0 < four < 3A, TU > 0C (Note 8) 3.528 3.672 V 4-62 AT MM 5518468 0010073 762LT1083/LT1084/LT1085 Fixed ELECTRICAL CHARACTERISTICS PARAMETER CONDITIONS MIN TYP MAX | UNITS Output Voltage LT1085-3.6 5V < Vin $ 15V, 0 < Ipur s 2.5A (Note 8) e 3.528 3.672 Vv Vin = 4.75V, lout = 3A, Ty = 0C 3.350 3.672 V Vin = 4.75V, lout = 2.5A, Ty 2 OC 3.450 3.672 V Vin = 4.75V, lout = 1.5A, Ty > 0C 3.528 3.672 V LT1083/4/5-5 lout = OMA, Ty = 25C, Vin = 8V (K Package Only) 4.95
.52IN2 COPPER AREA OVER BACKSIDE GROUND PLANE OR INTERNAL POWER PLANE. JA CAN VARY FROM 20C/W TO > 40C/W DEPENDING ON MOUNTING TECHNIQUE. Consult factory for Industrial grade parts. ELECTRICAL CHARACTERISTICS PARAMETER Output Voltage CONDITIONS LT1084-3.3 LT1085-3.3 LT1085-3.6 2 IOUT = 0mA, TJ = 25C, VIN = 8V (K Package Only) 0 IOUT 5A, 4.8V VIN 15V (Note 8) VIN = 5V, IOUT = 0mA, TJ = 25C (K Package Only) 4.8V VIN 15V, 0 IOUT 3A (Note 8) VIN = 5V, IOUT = 0mA, TJ = 25C (K Package Only) 5V VIN 15V, 0 IOUT 3A (Note 8) 5V VIN 15V, 0 IOUT 3A, TJ 0C (Note 8) MIN 3.270 3.235 3.270 3.235 3.564 3.500 3.528 TYP 3.300 3.300 3.300 3.300 3.600 MAX 3.330 3.365 3.330 3.365 3.636 3.672 3.672 UNITS V V V V V V V LT1083/84/85 Fixed ELECTRICAL CHARACTERISTICS PARAMETER Output Voltage CONDITIONS LT1085-3.6 LT1084-3.3 5V VIN 15V, 0 IOUT 2.5A (Note 8) VIN = 4.75V, IOUT = 3A, TJ 0C VIN = 4.75V, IOUT = 2.5A, TJ 0C VIN = 4.75V, IOUT = 1.5A, TJ > 0C IOUT = 0mA, TJ = 25C, VIN = 8V (K Package Only) 0 IOUT IFULLOAD, 6.5V VIN
ory for Industrial grade parts. ELECTRICAL CHARACTERISTICS PARAMETER CONDITIONS MIN TYP MAX | UNITS Output Voltage LT1084-3.3 lout = OMA, Ty = 25C, Vin = 8V (K Package Only) 3.270 3.300 3.330 V 0 LT1085-3.3 Vin = 5V, lout = OmA, Ty = 25C (K Package Only) 3.270 3.300 3.330 V 4.8V < Vin < 15V, 0 < lout < 3A (Note 8) e 3.235 3.300 3.365 V LT1085-3.6 Vin = 5V, lout = OmA, Ty = 25C (K Package Only) 3.564 3.600 3.636 V BV < Vin < 15V, 0 < lout < 3A (Note 8) e 3.500 3.672 V BV < Viy < 15V, 0 < Iqut < 3A, Td > 0C (Note 8) 3.528 3.672 VLT1083/84/85 Fixed ELECTRICAL CHARACTERISTICS PARAMETER CONDITIONS MIN TYP MAX | UNITS Output Voltage LT1085-3.6 BV < Vin < 15V, 0 < Ioyr < 2.5A (Note 8) @ | 3528 3.672 V Viv = 4.75V, loyy = 3A, Ty 20C 3.350 3.672 V Vin = 4.75Y, loyr = 2.5A, Ty > 0C 3.450 3.672 V Viy = 4.75V, lout = 1.5A, Ty > 0C 3.528 3.672 V LT1083/4/5-5 Igy = OMA, Ty = 25C, Viy = BV (K Package Only) 4.950 5.000 5.050 V 0 < lout
.52IN2 COPPER AREA OVER BACKSIDE GROUND PLANE OR INTERNAL POWER PLANE. JA CAN VARY FROM 20C/W TO > 40C/W DEPENDING ON MOUNTING TECHNIQUE. Consult factory for Industrial grade parts. ELECTRICAL CHARACTERISTICS PARAMETER Output Voltage CONDITIONS LT1084-3.3 LT1085-3.3 LT1085-3.6 2 IOUT = 0mA, TJ = 25C, VIN = 8V (K Package Only) 0 IOUT 5A, 4.8V VIN 15V (Note 8) VIN = 5V, IOUT = 0mA, TJ = 25C (K Package Only) 4.8V VIN 15V, 0 IOUT 3A (Note 8) VIN = 5V, IOUT = 0mA, TJ = 25C (K Package Only) 5V VIN 15V, 0 IOUT 3A (Note 8) 5V VIN 15V, 0 IOUT 3A, TJ 0C (Note 8) MIN 3.270 3.235 3.270 3.235 3.564 3.500 3.528 TYP 3.300 3.300 3.300 3.300 3.600 MAX 3.330 3.365 3.330 3.365 3.636 3.672 3.672 UNITS V V V V V V V LT1083/84/85 Fixed ELECTRICAL CHARACTERISTICS PARAMETER Output Voltage CONDITIONS LT1085-3.6 LT1083/4/5-5 LT1083/4/5-12 Line Regulation LT1084-3.3 5V VIN 15V, 0 IOUT 2.5A (Note 8) VIN = 4.75V, IOUT = 3A, TJ 0C VIN = 4.75V, IOUT = 2.5A, TJ 0C VIN = 4.75V, IOUT = 1.5A, TJ > 0C IOUT = 0mA, TJ = 25C, VIN = 8V
on www.linear.com/LT1083 LT1083/LT1084/LT1085 Fixed Electrical Characteristics The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25C. PARAMETER CONDITIONS Output Voltage LT1084-3.3 LT1085-3.3 LT1085-3.6 Line Regulation UNITS IOUT = 0mA, TJ = 25C, VIN = 8V (K Package Only) 4.8V VIN 15V, 0 IOUT IFULL_LOAD (Notes 3, 4, 9) l 3.270 3.235 3.300 3.300 3.330 3.365 V V VIN = 5V, IOUT = 0mA, TJ = 25C (K Package Only) 4.8V VIN 15V, 0 IOUT IFULL_LOAD (Notes 3, 4, 9) l 3.270 3.235 3.300 3.300 3.330 3.365 V V VIN = 5V, IOUT = 0mA, TJ = 25C (K Package Only) 5V VIN 15V, 0 IOUT IFULL_LOAD (Note 9) 5V VIN 15V, 0 IOUT IFULL_LOAD, TJ 0C (Notes 3, 4, 9) 3.564 3.500 3.528 3.600 l 3.636 3.672 3.672 V V V 3.672 3.672 3.672 3.672 V V V V LT1083/4/5-5 IOUT = 0mA, TJ = 25C, VIN = 8V (K Package Only) 0 IOUT IFULL_LOAD, 6.5V VIN 20V (Notes 4, 6, 7, 9) 4.950 4.900 5.000 5.000 5.050 5.100 V V LT1083/4/5-12 IOUT = 0mA, TJ = 25C, VIN = 15V (K Package Only
LT1085CM-3.6 LT1085IM-3.6 LT1083/LT1084/LT1085 Fixed ELECTRICAL CHARACTERISTICS The denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25C. PARAMETER CONDITIONS Output Voltage LT1084-3.3 LT1085-3.3 LT1085-3.6 3.300 3.300 3.330 3.365 V V VIN = 5V, IOUT = 0mA, TJ = 25C (K Package Only) 4.8V VIN 15V, 0 IOUT IFULLOAD (Notes 3, 4, 9) 3.270 3.235 3.300 3.300 3.330 3.365 V V 3.564 3.500 3.528 3.600 3.636 3.672 3.672 V V V 3.672 3.672 3.672 3.672 V V V V VIN = 5V, IOUT = 0mA, TJ = 25C (K Package Only) 5V VIN 15V, 0 IOUT IFULLOAD (Note 9) 5V VIN 15V, 0 IOUT IFULLOAD, TJ 0C (Notes 3, 4, 9) LT1083/4/5-5 IOUT = 0mA, TJ = 25C, VIN = 8V (K Package Only) 0 IOUT IFULLOAD, 6.5V VIN 20V (Notes 4, 6, 7, 9) LT1085-3.6 LT1083/4/5-5 UNITS 3.270 3.235 5V VIN 15V, 0 IOUT 2.5A (Notes 3, 4, 9) VIN = 4.75V, IOUT = 3A, TJ 0C VIN = 4.75V, IOUT = 2.5A, TJ 0C VIN = 4.75V, IOUT = 1.5A, TJ > 0C LT1085-3.3 MAX LT1085-3.6 LT1084-3.3 TYP IOUT = 0mA, T
perature ranges. 1083ffd 2 LT1083/LT1084/LT1085 Fixed ELECTRICAL CHARACTERISTICS The denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25C. PARAMETER CONDITIONS Output Voltage LT1084-3.3 LT1085-3.3 LT1085-3.6 3.300 3.300 3.330 3.365 V V VIN = 5V, IOUT = 0mA, TJ = 25C (K Package Only) 4.8V VIN 15V, 0 IOUT IFULLOAD (Notes 3, 4, 9) 3.270 3.235 3.300 3.300 3.330 3.365 V V 3.564 3.500 3.528 3.600 3.636 3.672 3.672 V V V 3.672 3.672 3.672 3.672 V V V V VIN = 5V, IOUT = 0mA, TJ = 25C (K Package Only) 5V VIN 15V, 0 IOUT IFULLOAD (Note 9) 5V VIN 15V, 0 IOUT IFULLOAD, TJ 0C (Notes 3, 4, 9) LT1083/4/5-5 IOUT = 0mA, TJ = 25C, VIN = 8V (K Package Only) 0 IOUT IFULLOAD, 6.5V VIN 20V (Notes 4, 6, 7, 9) LT1085-3.6 LT1083/4/5-5 IOUT = 0mA, TJ = 25C, 4.8V VIN 15V 4.8V VIN 15V, IOUT = 0mA, TJ= 25C 4.8V VIN 15V, IOUT = 0mA, TJ= 25C IOUT = 0mA, TJ = 25C, 6.5V VIN 20V (Notes 2, 3) LT1083/4/5-12 IOUT = 0mA, TJ = 25C, 13.5V VIN 25V (Notes 2, 3) Load Re
are given 5V by the main power source. Linear Technology now has 3.3V fixed output low dropout regulators which are fully specified for inputs of 5V and up, delivering outputs of 3.3V +2%. This family of low dropout regulators includes the LT1086-3.3, the LT1085-3.3, and LT1084-3.3. Output currents of these devices range from 1.5A to 5A, with only an output capacitor needed to complete a design. These regulators were designed to operate with input to output differentials as low as 1V, making them ideal for 5V to 3.3V regulation with minimum parts count and minimum design work. 5V iN out 3.3V, 1.5 (LT1086-3.3) INPUT L710843.8 3.3V, 3A (LT1085-3.3) Lriesseas 3,3V, 5A (LT1084-3.3} Lt tou L71086-3.3 aLt 22uF ALUMINUM GND = SOLID TANTALUM ANSB+ FIL Two of these regulators, the LT1085-3.3 and LT1086-3.3 are available in the surface mount DD package, allowing the regulator to fit on crowded processor boards. This 3-lead surface mount package can handle in excess of 2W of power
ry for Industrial grade parts. ELECTRICAL CHARACTERISTICS PARAMETER CONDITIONS MIN TYP MAX UNITS Output Voltage LT1084-3.3 lout = OMA, Ty = 25C, Viy = 8V (K Package Only) 3.270 3.300 3.330 Vv 0 < lout < 5A, 4.8V < Vin s 15V (Note 8) e 3.235 3.300 3.365 Vv LT1085-3.3 Vin = 5V, lout = OmA, Ty = 25C (K Package Only) 3.270 3.300 3.330 Vv 4.BV < Vin < 15V, 0 < lou < 3A (Note 8) @ | 3235 3.300 3.365 Vv LT1085-3.6 Vin = 5V. lout = OMA, Ty = 25C (K Package Only) 3.564 3.600 3.636 v 5V < Vin < 15V, 0 < Igyr $ 3A (Note 8) e@ | 3.500 3.672 Vv 5V < Vin < 15V, 0 < Igyt < 3A, Td > 0C (Note 8) 3.528 3.672 v 4-62 LT Whee MB 5518468 0010073 762 aLT1083/LT1084/LT1085 Fixed ELECTRICAL CHARACTERISTICS PARAMETER CONDITIONS MIN TYP MAX | UNITS Output Voltage LT1085-3.6 5V < Vin s 15V, 0 < Ipyt < 2.5A (Note 8) e 3.528 3.672 Vv Vin = 4.75V, lout = 3A, Ty > 0C 3.350 3.672 Vv Vin = 4.75V, lout = 2.5A, Ty > OC 3.450 3.672 Vv Vin = 4.75V, lout = 1.5A, Ty > 0C 3,528 3.672 Vv LT1083/4/5-5 lout = OMA, Ty = 25C, Vin = 8V (K Pac
LT1085-3.3/2.9/2.5 1.5 A/3.0 A Low Dropout Positive Regulator MIK1086-3.3/2.9/2.5 MIK1085-3.3/2.9/2.5 Description The MIK1086/MIK1085 Series 1.5/3.0A fixed voltage regulators are monolithic integrated circuits designed to power the new generation of microprocessors for use applications requiring a well regulated positive output voltage with low input-output differential voltage requirements and output voltage 3.3V, 2.9V or 2.5V. Output voltage may be selecting using a jumper on the circuit board. Outstanding features include full power usage up to 1.5/3.0A of load current, internal current limiting and thermal shutdown. Other fixed versions are also available Vout = 2.0V to 4.0V. Features Applications * * * * * * * * * * * * Low Dropout Performance 1V at full Load Jumper Selected Output Voltage 3.3V, 2.9V, 2.5V Line Regulation Typically 0.015% Load Regulation Typically 0.1% Fast Transient Response 5 Lead TO-220 Packages Typical application regulator data fixed Microprocessor Supplies Post Regulat
LT1085-3.3/2.9/2.5 MIK1086-3.3/2.9/2.5 MIK1085-3.3/2.9/2.5 August 1995-revised September 2002 Description The MIK1086/MIK1085 Series 1.5/3.0A fixed voltage regulators are monolithic integrated circuits designed to power the new generation of microprocessors for use applications requiring a well regulated positive output voltage with low input-output differential voltage requirements and output voltage 3.3V, 2.9V or 2.5V. Output voltage may be selecting using a jumper on the circuit board. Outstanding features include full power usage up to 1.5/3.0A of load current, internal current limiting and thermal shutdown. Other fixed versions are also available Vout = 2.0V to 4.0V. Features Applications * * * * * * * * * * * * Low Dropout Performance 1V at full Load Jumper Selected Output Voltage 3.3V, 2.9V, 2.5V Line Regulation Typically 0.015% Load Regulation Typically 0.1% Fast Transient Response 5 Lead TO-220 Packages Typical application regulator data fixed Microprocessor Supplies Post Regulators for
DEVICE PASS DEVICE SHUTDOWN CURRENT TOLERANCE* 125mA LT1020 PNP 40A 2.1% (69mV) 125mA LT1120 PNP 40A 2.1% (69mV) 150mA LT1121-3.3 PNP 16A 3% (100mV) 700mA LT1129-3.3 PNP 16A 3% (100mV) 800mA LT1117-3.3 NPN - 2% (65mV) 1.5A LT1086-3.3 NPN - 1.6% (53mV) 3A LT1085-3.3 NPN - 1.6% (53mV) 5A LT1084 NPN - 1.9% (61mV) 7.5A LT1083 NPN - 1.9% (61mV) 10A 2 x LT1087 NPN - 1.9% (61mV) *Includes line, load, and temperature variations. Adjustable parts also include worst case effect of external 1% resistors. AN58-1 Application Note 58 Controlling Transient Loads Microprocessors require the input voltage to be maintained within 5% under worst case transients. The dynamic nodes internal to the processor are sensitive to voltage. Transients drawn by the processor are so fast that no active loop can respond in time. Adequate reserves of charge must be maintained in a group of capacitors to supply this current until the regulator can respond. This is true for both linear and switching regulators. Modern power savin
1033 Ripple Rejection LT1083 DS 9 NA LT1083 Category Digital System Support (Continued) Subject Power Supply Turn-On Sequencing LT Part Number(s) Push-On, Push-Off Regulator with Logic Output on Dropout Regulator with Output Shutdown on Dropout Discussion LT1085-3.3 Bypass Capacitors Bypassing the Adjustment Pin Linear Power Supplies--Past, Present and Future Load Regulation 108 SUBJECT INDEX Regulators--Linear (Continued) Publication Page Number Figure Number Table of 1/2% and 1% Standard Resistance Values LT117 DS 6 NA NA Thermal Considerations LT1083 DS 10 NA LT1083 LM10 DS 11 NA LM10 Category Discussion (Continued) Subject LT Part Number(s) Floating Floating Regulator High Current Regulator with Current and Thermal Protection (8.5V to 5V, 12A) AN2 2 2 LT1005 Regulator with Current and Thermal Protection (8.5V to 5V, 10A) LT1005 DS 11 NA LT1005 Variable Regulator (10A) LT1038 DS 7 NA LT1038, LM301A, LT1011 LM10 DS 12 NA LM10 High Voltage Regulator (100V) AN2 6 11 LT317AT High Voltage Regulator
LT1085-3.3 (3A)* LT1585-3.45 (4A)* | LT1084-5 (5A) LT1020 (0.125A) LT1587-1.5 (3A) T1118-2.85 (0.8A/-0.4A) | LT1086-3.3 (1.5A)" | LT1587-3.45 (3A) |: LT1085-5 (3A) LT1083 (7.5A) LT1117-3.3 (0.8A)** LT1086-5 (1.5A) LT1084 (5A) LT1121-3.3 (0.15) 11117-5 (0.8A)** LT1085 (34) LT1129-3.3 (0.7A)"* LT1118-5 (0.8A/-0.4A} LT1086 (1.5A)* LT1521-3.3 (0.3A) LT1121-5 (0.15A)** T1117 (0.8A)*: ** LT1528-3.3 (3A) 111123 (pnp Driver)** LT1120 (0.1254) LT1529-3.3 (3A) LT1129-5 (0.7A)** LT1120A (0.1254) LT1584-3.3 (7A) LT4521-5 (0.3A) LT1121 (0.150A) LT1585-3.3 (4.6A)* LT1529-5 (3A) LT1129 (0.700A)*: ** LT1585A-3.3 (5A) LT1521 (0.3A) LT1587-3.3 (3A)* LT1529 (3A) reed 7A} Fixed 2.5V Fixed 3.0V Fixed 3.38V| | Fixed 3.6V Fixed 12V LT1585 (4.6A)* LT1118 (0.8A/-0.4A) LT1521-3 (0.3) L11584-3.38 (7A) LT1085-3.6 (3A)* LT1083-12 (7.54) LT1585A (5A) LT1580-2.5(7A) LT1585-3.38 (44}" LT1086-3.6.(1.5A)* - LT1084-12 (5A) LT1587 (3A) LT1584-3.6 (7A) LT1085-12 (3A) LT1585-3.6 (4A)* LT1086-12 (1.5A) wn LT1587-3.6 (3A) Qo co tr 3V D
processor can be omitted if 5V is not required elsewhere in the design. The 3.3V digital supply, VCC, is generated by an LT1086-3.3, a 1.5Amp fixed 3.3V lowdropout voltage regulator. Components with a larger power capacity are also available, such as the LT1085-3.3. If the CP's analog-to-digital converter (ADC) is used, it should be supplied with a filtered 3.3V supply. The +3.3Vs supply is a filtered version of the VCC supply, which is used to supply the ADC and its related conditioning circuitry. The extra filtering is used to provide additional decoupling of the analog elements from the digital elements in the circuitry. The following is the list of supplies which are referenced in the example schematics: +5Vs: a filtered version of 5VCC. This is used for analog components requiring +5V supplies. The extra filtering is used to reduce the voltage ripple, and to generate additional decoupling of the analog elements from the digital elements in the circuitry. 15Vs: 15V supplies, used for analog