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LT3083MPFE#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P28
LT3083
1
3083fa
TYPICAL APPLICATION
DESCRIPTION
Adjustable 3A
Single Resistor Low
Dropout Regulator
The LT
®
3083 is a 3A low dropout linear regulator that can
be paralleled to increase output current or spread heat on
surface mounted boards. Architected as a precision current
source and voltage follower, this new regulator finds use
in many applications requiring high current, adjustability
to zero, and no heat sink. The device also brings out the
collector of the pass transistor to allow low dropout opera-
tion—down to 310mV—when used with multiple supplies.
A key feature of the LT3083 is the capability to supply a
wide output voltage range. By using a reference current
through a single resistor, the output voltage is programmed
to any level between zero and 23V (DD-PAK and TO-220
packages). The LT3083 is stable with 10µF of capacitance
on the output, and the IC is stable with small ceramic ca-
pacitors that do not require additional ESR as is common
with other regulators.
Internal protection circuitry includes current limiting and
thermal limiting. The LT3083 is offered in the 16-lead
TSSOP (with an exposed pad for better thermal character-
istics), 12-lead 4mm × 4mm DFN (also with an exposed
pad), 5-lead TO-220, and 5-lead surface mount DD-PAK
packages.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
1.5V to 0.9V at 3A Supply (Using 3.3V V
CONTROL
)
FEATURES
APPLICATIONS
n
Outputs May be Paralleled for Higher Current and
Heat Spreading
n
Output Current: 3A
n
Single Resistor Programs Output Voltage
n
50µA Set Pin Current: 1% Initial Accuracy
n
Output Adjustable to 0V
n
Low Output Noise: 40µV
RMS
(10Hz to 100kHz)
n
Wide Input Voltage Range: 1.2V to 23V
(DD-Pak and TO-220 Packages)
n
Low Dropout Voltage: 310mV
n
<1mV Load Regulation
n
<0.001%/V Line Regulation
n
Minimum Load Current: 1mA
n
Stable with Minimum 10µF Ceramic Capacitor
n
Current Limit with Foldback and Overtemperature
Protection
n
Available in 16-Lead TSSOP, 12-Lead 4mm × 4mm
DFN, 5-Lead TO-220 and 5-Lead Surface Mount
DD-PAK Packages
n
High Current All Surface Mount Supply
n
High Efficiency Linear Regulator
n
Post Regulator for Switching Supplies
n
Low Parts Count Variable Voltage Supply
n
Low Output Voltage Power Supplies
Set Pin Current Distribution
49
51
3083 TA01b
49.5 50 50.5
SET PIN CURRENT DISTRIBUTION (µA)
N = 1052
3083 TA01a
V
CONTROL
OUTIN
LT3083
SET
R
MIN
909Ω
*
10µF
10µF
V
OUT
= 0.9V
I
MAX
= 3A
V
IN
1.5V
4.7µF
V
CONTROL
3.3V
R
SET
18.2k
1%
0.1µF
*OPTIONAL FOR
MINIMUM 1mA LOAD
REQUIREMENT
LT3083
2
3083fa
ABSOLUTE MAXIMUM RATINGS
CONTROL Pin Voltage .............................................±28V
IN Pin Voltage (T5, Q Packages)
....................18V, –0.3V
No Overload or Short-Circuit
.....................23V, –0.3V
IN Pin Voltage (DF, FE Packages)
.....................8V, –0.3V
No Overload or Short-Circuit
.....................14V, –0.3V
SET Pin Current (Note 7)
.....................................±25mA
SET Pin Voltage (Relative to OUT)
.......................... ±10V
(Note 1) All Voltages Relative to V
OUT
TOP VIEW
13
OUT
DF PACKAGE
12-LEAD (4mm × 4mm) PLASTIC DFN
12
11
8
9
10
4
5
3
2
1
IN
IN
IN
IN
V
CONTROL
V
CONTROL
OUT
OUT
OUT
OUT
OUT
SET
6
7
T
JMAX
= 125°C, θ
JA
= 37°C/W, θ
JC
= 8°C/W
EXPOSED PAD (PIN 13) IS OUT, MUST BE SOLDERED TO PCB
FE PACKAGE
16-LEAD PLASTIC TSSOP
1
2
3
4
5
6
7
8
TOP VIEW
16
15
14
13
12
11
10
9
OUT
OUT
OUT
OUT
OUT
OUT
SET
OUT
OUT
IN
IN
IN
IN
V
CONTROL
V
CONTROL
OUT
17
OUT
T
JMAX
= 125°C, θ
JA
= 25°C/W, θ
JC
= 8°C/W
EXPOSED PAD (PIN 17) IS OUT, MUST BE SOLDERED TO PCB
Q PACKAGE
5-LEAD PLASTIC DD-PAK
TAB IS
OUT
FRONT VIEW
IN
V
CONTROL
OUT
SET
NC
5
4
3
2
1
T
JMAX
= 125°C, θ
JA
= 15°C/W, θ
JC
= 3°C/W
T PACKAGE
5-LEAD PLASTIC TO-220
IN
V
CONTROL
OUT
SET
NC
FRONT VIEW
5
4
3
2
1
TAB IS
OUT
T
JMAX
= 125°C, θ
JA
= 40°C/W, θ
JC
= 3°C/W
PIN CONFIGURATION
Output Short-Circuit Duration .......................... Indefinite
Operating Junction Temperature Range (Notes 2, 10)
E-, I-grades
........................................ –40°C to 125°C
MP-grade
........................................... –55°C to 125°C
Storage Temperature Range
.................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
T, Q, FE Packages Only
.....................................300°C
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3083EDF#PBF LT3083EDF#TRPBF 3083 12-Lead (4mm × 4mm) Plastic DFN –40°C to 125°C
LT3083EFE#PBF LT3083EFE#TRPBF 3083FE 16-Lead Plastic TSSOP –40°C to 125°C
LT3083EQ#PBF LT3083EQ#TRPBF LT3083Q 5-Lead Plastic DD-PAK –40°C to 125°C
LT3083ET#PBF LT3083ET#TRPBF LT3083T 5-Lead Plastic TO-220 –40°C to 125°C
LT3083IDF#PBF LT3083IDF#TRPBF 3083 12-Lead (4mm × 4mm) Plastic DFN –40°C to 125°C
LT3083IFE#PBF LT3083IFE#TRPBF 3083FE 16-Lead Plastic TSSOP –40°C to 125°C
ORDER INFORMATION
LT3083
3
3083fa
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3083IQ#PBF LT3083IQ#TRPBF LT3083Q 5-Lead Plastic DD-PAK –40°C to 125°C
LT3083IT#PBF LT3083IT#TRPBF LT3083T 5-Lead Plastic TO-220 –40°C to 125°C
LT3083MPDF#PBF LT3083MPDF#TRPBF 3083 12-Lead (4mm × 4mm) Plastic DFN –55°C to 125°C
LT3083MPFE#PBF LT3083MPFE#TRPBF 3083FE 16-Lead Plastic TSSOP –55°C to 125°C
LT3083MPQ#PBF LT3083MPQ#TRPBF LT3083Q 5-Lead Plastic DD-PAK –55°C to 125°C
LT3083MPT#PBF LT3083MPT#TRPBF LT3083T 5-Lead Plastic TO-220 –55°C to 125°C
LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3083EDF LT3083EDF#TR 3083 12-Lead (4mm × 4mm) Plastic DFN –40°C to 125°C
LT3083EFE LT3083EFE#TR 3083FE 16-Lead Plastic TSSOP –40°C to 125°C
LT3083EQ LT3083EQ#TR LT3083Q 5-Lead Plastic DD-PAK –40°C to 125°C
LT3083ET LT3083ET#TR LT3083T 5-Lead Plastic TO-220 –40°C to 125°C
LT3083IDF LT3083IDF#TR 3083 12-Lead (4mm × 4mm) Plastic DFN –40°C to 125°C
LT3083IFE LT3083IFE#TR 3083FE 16-Lead Plastic TSSOP –40°C to 125°C
LT3083IQ LT3083IQ#TR LT3083Q 5-Lead Plastic DD-PAK –40°C to 125°C
LT3083IT LT3083IT#TR LT3083T 5-Lead Plastic TO-220 –40°C to 125°C
LT3083MPDF LT3083MPDF#TR 3083 12-Lead (4mm × 4mm) Plastic DFN –55°C to 125°C
LT3083MPFE LT3083MPFE#TR 3083FE 16-Lead Plastic TSSOP –55°C to 125°C
LT3083MPQ LT3083MPQ#TR LT3083Q 5-Lead Plastic DD-PAK –55°C to 125°C
LT3083MPT LT3083MPT#TR LT3083T 5-Lead Plastic TO-220 –55°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C (Note 2).
ELECTRICAL CHARACTERISTICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
SET Pin Current I
SET
V
IN
= 1V, V
CONTROL
= 2V, I
LOAD
= 1mA, T
J
= 25°C
V
IN
≥ 1V, V
CONTROL
≥ 2V, 5mA ≤ I
LOAD
≤ 3A (Note 9)
l
49.5
49
50
50
50.5
51
µA
µA
Output Offset Voltage (V
OUT
– V
SET
) V
OS
V
IN
= 1V, V
CONTROL
= 2V, I
LOAD
= 1mA
DF, FE Packages
l
–3
–4
0
0
3
4
mV
mV
T, Q Packages
l
–4
–6
0
0
4
6
mV
mV
Load Regulation (DF, FE Packages) ∆I
SET
∆V
OS
∆I
LOAD
= 1mA to 3A
∆I
LOAD
= 5mA to 3A (Note 8)
l
–10
–0.4
–1
nA
mV
Load Regulation (T, Q Packages) ∆I
SET
∆V
OS
∆I
LOAD
= 1mA to 3A
∆I
LOAD
= 5mA to 3A (Note 8)
l
–10
–0.7
–4
nA
mV
Line Regulation (DF, FE Packages) ∆I
SET
∆V
OS
∆V
IN
= 1V to 14V, ∆V
CONTROL
= 2V to 25V, I
LOAD
= 1mA
∆V
IN
= 1V to 14V, ∆V
CONTROL
= 2V to 25V, I
LOAD
= 1mA
0.1
0.002
0.01
nA/V
mV/V
Line Regulation (T, Q Packages) ∆I
SET
∆V
OS
∆V
IN
= 1V to 23V, ∆V
CONTROL
= 2V to 25V, I
LOAD
= 1mA
∆V
IN
= 1V to 23V, ∆V
CONTROL
= 2V to 25V, I
LOAD
= 1mA
0.1
0.002
0.01
nA/V
mV/V
Minimum Load Current (Notes 3, 9) V
IN
= 1V, V
CONTROL
= 2V
V
IN
= 14V (DF/FE) or 23V (T/Q), V
CONTROL
= 25V
l
l
350 500
1
µA
mA
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LT3083MPFE#TRPBF

Mfr. #:
Buy LT3083MPFE#TRPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
LDO Voltage Regulators Adjustable 3A Single Resistor Low Dropout Regulator
Lifecycle:
New from this manufacturer.
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