LT1084CP12#PBF Linear Technology, LT1084CP12#PBF Datasheet

IC, V REG LDO +12V, 1084, TO-3P-3

LT1084CP12#PBF

Manufacturer Part Number
LT1084CP12#PBF
Description
IC, V REG LDO +12V, 1084, TO-3P-3
Manufacturer
Linear Technology
Datasheet

Specifications of LT1084CP12#PBF

Primary Input Voltage
25V
Output Voltage
12V
Dropout Voltage Vdo
1.3V
No. Of Pins
3
Output Current
5A
Voltage Regulator Case Style
TO-3
Operating Temperature Range
0°C To +125°C
Svhc
No SVHC
Output Voltage Fixed
12V
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
FEATURES
APPLICATIO S
TYPICAL APPLICATIO
*For a 1.5A low dropout regulator see the LT1086 data sheet.
Three-Terminal Adjustable
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
Fixed Versions Available
Available in 3-Lead Plastic TO-220, TO-3P and DD
Packages
High Efficiency Linear Regulators
Post Regulators for Switching Supplies
Constant Current Regulators
Battery Chargers
V
IN
≥ 6.5V
*REQUIRED FOR STABILITY
DEVICE
LT1083
LT1084
LT1085
+
10µF
IN
U
5V, 7.5A Regulator
LT1083
ADJ
OUT
OUTPUT CURRENT*
U
121Ω
1%
365Ω
1%
7.5A
5.0A
3.0A
+
10µF*
TANTALUM
1083/4/5 ADJ TA01
5V AT 7.5A
Positive Adjustable Regulators
DESCRIPTIO
The LT
designed to provide 7.5A, 5A and 3A with higher efficiency
than currently available devices. All internal circuitry is
designed to operate down to 1V input-to-output differen-
tial 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 reference voltage
to 1%. Current limit is also trimmed, minimizing the stress
on both the regulator and power source circuitry under
overload conditions.
The LT1083/LT1084/LT1085 devices are pin compatible
with older three-terminal regulators. A 10µF output ca-
pacitor is required on these new devices. However, this is
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.
7.5A, 5A, 3A Low Dropout
, LTC and LT are registered trademarks of Linear Technology Corporation.
®
1083 series of positive adjustable regulators are
2
1
0
Dropout Voltage vs Output Current
0
LT1083/LT1084/LT1085
U
OUTPUT CURRENT
1083/4/5 ADJ TA02
I
FULL LOAD
108345fe
1

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LT1084CP12#PBF Summary of contents

Page 1

... 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. 7.5A 5.0A , LTC and LT are registered trademarks of Linear Technology Corporation. 3.0A All other trademarks are the property of their respective owners 7.5A 121Ω ...

Page 2

LT1083/LT1084/LT1085 ABSOLUTE MAXIMUM Power Dissipation ............................... Internally Limited Input-to-Output Voltage Differential “C” Grades .......................................................... 30V “I” Grades ............................................................ 30V “M” Grades (OBSOLETE)............................ 35V Operating Junction Temperature Range “C” Grades: Control Section .................. 0°C to 125°C Power Transistor ...

Page 3

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T PARAMETER CONDITIONS Load Regulation (V IN 10mA ≤ 25°C (Notes ∆V Dropout Voltage REF Current Limit LT1083 ( LT1084 (V ...

Page 4

LT1083/LT1084/LT1085 W U TYPICAL PERFORMANCE CHARACTERISTICS LT1083 Dropout Voltage 2 INDICATES GUARANTEED TEST POINT –40°C ≤ T ≤ 150°C J 0°C ≤ T ≤ 125° 150° 25° –55° ...

Page 5

W U TYPICAL PERFORMANCE CHARACTERISTICS Minimum Operating Current 150° 25° –55° INPUT/OUTPUT ...

Page 6

LT1083/LT1084/LT1085 W U TYPICAL PERFORMANCE CHARACTERISTICS LT1085 Ripple Rejection 100 ≤ RIPPLE P-P RIPPLE ≤ 0. ≥ – OUT ≥ – OUT ...

Page 7

W BLOCK DIAGRAM THERMAL V ADJ U U APPLICATIONS INFORMATION The LT1083 family of three-terminal adjustable regulators is easy to use and has all the protection features that are expected in high performance voltage regulators. They are short-circuit protected, and ...

Page 8

LT1083/LT1084/LT1085 U U APPLICATIONS INFORMATION Normally, capacitor values on the order of 100µF are used in the output of many regulators to ensure good transient response with heavy load current changes. Output capaci- tance can be increased without limit and ...

Page 9

U U APPLICATIONS INFORMATION The problem occurs with a heavy output load when the input voltage is high and the output voltage is low, such as immediately after removal of a short. The load line for such a load may ...

Page 10

LT1083/LT1084/LT1085 U U APPLICATIONS INFORMATION Connected as shown not multiplied by the divider P ratio about 0.004Ω per foot using 16-gauge wire. P This translates to 4mV/ load current important to ...

Page 11

U TYPICAL APPLICATIONS T1 TRIAD C30B F-269U 20Ω 110VAC 20Ω C30B 1N4003 1N4003 1µF 560Ω 82k 15k 10k 1N4148 * 1% FILM RESISTOR L: DALE TO-5 TYPE T2: STANCOR 11Z-2003 GENERAL PURPOSE REGULATOR WITH SCR PREREGULATOR ...

Page 12

LT1083/LT1084/LT1085 U TYPICAL APPLICATIONS *C1 IMPROVES RIPPLE REJECTION. SHOULD BE < RIPPLE FREQUENCY LT1083 IN ADJ + 10µF RETURN 12 Paralleling Regulators 2 FEET #18 WIRE* IN LT1083 OUT ADJ ...

Page 13

U TYPICAL APPLICATIONS High Efficiency Regulator with Switching Preregulator V IN 28V 10k 1k 1mH IN LT1083 + ADJ MR1122 10,000µF 470Ω 1N914 28V 1M 4N28 10k + LT1011 10k – 28V 1N914 1.2V to 15V Adjustable Regulator V LT1083 ...

Page 14

LT1083/LT1084/LT1085 PACKAGE DESCRIPTION 0.760 – 0.775 0.320 – 0.350 (19.30 – 19.69) (8.13 – 8.89) 0.420 – 0.480 (10.67 – 12.19) 0.038 – 0.043 (0.965 – 1.09) .060 .256 (1.524) (6.502) .060 .183 (1.524) (4.648) .075 (1.905) .300 (7.620) BOTTOM ...

Page 15

... BSC 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 Package 3-Lead Plastic TO-3P (Similar to TO-247) (LTC DWG # 05-08-1450) .620 – ...

Page 16

... LT1430 High Power Step-Down Switching Regulator TM LT1575 UltraFast Transient Response LDO Controller LT1573 UltraFast Transient Response LDO Controller UltraFast is a trademark of Linear Technology Corporation. Linear Technology Corporation 16 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● ● Automatic Light Control ...

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