LT1084CT-12 Linear Technology, LT1084CT-12 Datasheet

IC LDO REG 5A 12V TO-220-3

LT1084CT-12

Manufacturer Part Number
LT1084CT-12
Description
IC LDO REG 5A 12V TO-220-3
Manufacturer
Linear Technology
Datasheet

Specifications of LT1084CT-12

Regulator Topology
Positive Fixed
Voltage - Output
12V
Voltage - Input
Up to 25V
Voltage - Dropout (typical)
1.3V @ 5A
Number Of Regulators
1
Current - Output
5A
Current - Limit (min)
5.5A
Operating Temperature
0°C ~ 150°C
Mounting Type
Through Hole
Package / Case
TO-220-3 (Straight Leads)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LT1084CT-12
Manufacturer:
LT
Quantity:
3 754
Part Number:
LT1084CT-12
Quantity:
5 510
Part Number:
LT1084CT-12
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LT1084CT-12#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
FEATURES
TYPICAL APPLICATIO
APPLICATIO S
*For a 1.5A low dropout regulator see the LT1086 data sheet.
High Efficiency Linear Regulators
Post Regulators for Switching Supplies
Constant Current Regulators
Battery Chargers
Three-Terminal 3.3V, 3.6V, 5V and 12V
Output Current of 3A, 5A or 7.5A
Operates Down to 1V Dropout
Guaranteed Dropout Voltage at Multiple Current Levels
Line Regulation: 0.015%
Load Regulation: 0.1%
100% Thermal Limit Functional Test
Adjustable Versions Available
V
IN
≥ 6.5V
DEVICE
LT1083
LT1084
LT1085
+
10μF
U
5V, 7.5A Regulator
*REQUIRED FOR STABILITY
LT1083-5
OUTPUT CURRENT*
U
7.5 Amps
5.0 Amps
3.0 Amps
+
LT1083/4/5 TA01
22μF*
TANTALUM
5V AT 7.5A
DESCRIPTIO
The LT
designed to provide 3A, 5A and 7.5A 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 1.5V
at maximum output current, decreasing at lower load
currents. 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 conditions.
The LT1083 series devices are pin compatible with older
three-terminal regulators. A 10μF output capacitor is
required on these new devices; however, this is usually
included in most regulator designs.
Unlike PNP regulators, where up to 10% of the output
current is wasted as quiescent current, the LT1083 quies-
cent current flows into the load, increasing efficiency.
All other trademarks are the property of their respective owners.
3A, 5A, 7.5A Low Dropout
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
Positive Fixed Regulators
LT1083/LT1084/LT1085 Fixed
®
1083 series of positive adjustable regulators are
2
1
0
0
Dropout Voltage vs Output Current
U
OUTPUT CURRENT (A)
I
FULLLOAD
/2
1083/4/5 TA02
I
FULLLOAD
1083ffd
1

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LT1084CT-12 Summary of contents

Page 1

... Amps current is wasted as quiescent current, the LT1083 quies- 5.0 Amps cent current flows into the load, increasing efficiency. 3.0 Amps , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners 7.5A + 22μF* ...

Page 2

... ORDER PART NUMBER LT1084MK-5 LT1084MK-12 TAB IS OUTPUT LT1085CK-5 LT1085CK-12 LT1085MK-5 LT1085MK-12 LT1084CT-3.3 LT1084CT-5 LT1084CT-12 TAB IS OUTPUT LT1085CT-3.3 LT1085CT-3.6 LT1085CT-5 LT1085CT-12 *WITH PACKAGE SOLDERED TO 0.52IN COPPER AREA OVER BACKSIDE GROUND PLANE OR INTERNAL POWER PLANE. θ VARY FROM 20°C/W TO > 40°C/W DEPENDING ON MOUNTING TECHNIQUE. ...

Page 3

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T PARAMETER CONDITIONS Output Voltage LT1084-3 0mA, T OUT 4.8V ≤ V LT1085-3 5V 4.8V ≤ V LT1085-3 5V ≤ V ...

Page 4

LT1083/LT1084/LT1085 Fixed ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T PARAMETER CONDITIONS Quiescient Current LT1084-3 LT1085-3 LT1085-3 LT1083/4/5 LT1083/4/5- Thermal Regulation LT1083-5/ LT1084-3.3/5/12 LT1085-3.3/3.6/5/12 Ripple Rejection f ...

Page 5

W U TYPICAL PERFOR A CE CHARACTERISTICS LT1083 Dropout Voltage 2 INDICATES GUARANTEED TEST POINT –40°C ≤ T ≤ 150°C J 0°C ≤ T ≤ 125° 150° 25° –55°C J ...

Page 6

... OUT DROPOUT OUT FULLLOAD 0 10 100 1k 10k 100k FREQUENCY (Hz) 1083/4/5 FIXED G13 LT1084 Maximum Power Dissipation LT1084CT 20 10 LT1084CK 100 110 120 130 140 150 CASE TEMPERATURE (° LIMITED BY MAXIMUM JUNCTION TEMPERATURE 6 LT1083/4/5-5 Ripple Rejection vs Current 100 120Hz R ≤ RIPPLE P-P 70 ...

Page 7

W BLOCK DIAGRA THERMAL LIMIT U U APPLICATIO S I FOR ATIO The LT1083 family of three-terminal regulators are easy to use and have all the protection features that are expected in high performance voltage regulators. They are short circuit ...

Page 8

LT1083/LT1084/LT1085 Fixed U U APPLICATIO S I FOR ATIO folded back as input-to-output voltage increases. This negative resistance can react with capacitors or inductors on the input to cause oscillations during current limiting. Depending on the value of series resistance, ...

Page 9

U U APPLICATIO S I FOR ATIO case- to-heat sink interface, and heat sink resistance itself. New thermal resistance specifications have been devel- oped to more accurately reflect device temperature and ensure safe operating temperatures. The data section for these ...

Page 10

LT1083/LT1084/LT1085 Fixed U TYPICAL APPLICATIO S T1 TRIAD C30B F-269U 20Ω 110VAC 20Ω C30B 1N4003 1N4003 82k 10k * 1% FILM RESISTOR L-DALE TO-5 TYPE T2-STANCOR 11Z-2003 REGULATOR WITH SCR PREREGULATOR TO LOWER POWER DISSIPATION. ABOUT 1.7V DIFFERENTIAL IS MAINTAINED ...

Page 11

... HATCHED AREA IS SOLDER PLATED COPPER HEAT SINK Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. LT1083/LT1084/LT1085 Fixed ...

Page 12

... Low Noise Fast Transient Response LDO LT1962 300mA, Low Noise LDO Micropower Regulator LT1963 1.5A, Low Noise, Fast Transient Response LDO UltraFast and OPTI-LOOP are trademarks of Linear Technology Corporation. Linear Technology Corporation 12 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● ...

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