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Linear Technology Electronic Components Datasheet

LT3088 Datasheet

800mA Single Resistor Rugged Linear Regulator

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LT3088
800mA Single Resistor
Rugged Linear Regulator
FEATURES
n Extended Safe Operating Area
n Maximum Output Current: 800mA
n Stable with or without Input/Output Capacitors
n Wide Input Voltage Range: 1.2V to 36V
n Single Resistor Sets Output Voltage
n Output Adjustable to 0V
n 50µA SET Pin Current: 1% Initial Accuracy
n Output Voltage Noise: 27µVRMS
n Parallel Multiple Devices for Higher Current, Heat
Spreading and Lower Noise
nn Pin Compatible Upgrade to LT1117
n Reverse-Battery and Reverse-Current Protection
n <1mV Typical Load Regulation Independent of VOUT
n <0.001%/V Typical Line Regulation
n 3-Lead SOT-223, 3-Lead DD-Pak, 8-Lead 3mm ×
3mm DFN Packages
APPLICATIONS
n All Surface Mount Power Supply
n Rugged Industrial Power Supply
n Post Regulator for Switching Supplies
n Low Output Voltage Supply
n Intrinsic Safety Applications
DESCRIPTION
The LT®3088 is an 800mA low dropout linear regulator
designed for rugged industrial applications. A key feature
of the IC is the extended safe operating area (SOA). The
LT3088 can be paralleled for higher output current or heat
spreading. The device withstands reverse input and reverse
output-to-input voltages without reverse current flow.
The LT3088’s precision 50µA reference current source
allows a single resistor to program output voltage to
any level between zero and 34.5V. The current reference
architecture makes load regulation independent of output
voltage. The LT3088 is stable with or without input and
output capacitors.
Internal protection circuitry includes reverse-battery and
reverse-current protection, current limiting and thermal
limiting. The LT3088 is offered in the 3-lead SOT-223,
3-lead DD-Pak, and an 8-lead 3mm × 3mm DFN package.
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.
TYPICAL APPLICATION
Wide Safe Operating Area Supply
LT3088
VIN
IN
50µA
+
SET
30.1k
OUT
10µF*
*OPTIONAL
750Ω*
IOUT
1.5V
800mA
3088 TA01a
SET Pin Current
51.0
50.8
ILOAD = 2mA
50.6
50.4
50.2
50.0
49.8
49.6
49.4
49.2
49.0
–75 –50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
3088 G01
For more information www.linear.com/LT3088
3088fb
1


Linear Technology Electronic Components Datasheet

LT3088 Datasheet

800mA Single Resistor Rugged Linear Regulator

No Preview Available !

LT3088
ABSOLUTE MAXIMUM RATINGS (Note 1) All voltages Relative to VOUT
IN Pin to OUT Pin Differential Voltage......................±40V
SET Pin Current (Note 6)......................................±25mA
SET Pin Voltage (Relative to OUT, Note 6)............... ±10V
Output Short-Circuit Duration........................... Indefinite
Operating Junction Temperature Range (Note 2)
E-, I-Grades........................................ –40°C to 125°C
H-Grade.............................................. –40°C to 150°C
MP-Grade........................................... –55°C to 150°C
Storage Temperature Range................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
M, ST Packages Only......................................... 300°C
PIN CONFIGURATION
TOP VIEW
OUT 1
8 IN
OUT 2 9 7 IN
OUT 3 OUT 6 NC
SET 4
5 NC
DD PACKAGE
8-LEAD (3mm × 3mm) PLASTIC DFN
TJMAX = 150°C, θJA = 28°C/W, θJC = 5.3°C/W
EXPOSED PAD (PIN 9) IS OUT, MUST BE SOLDERED TO PCB
TAB IS
OUT
FRONT VIEW
3 IN
2 OUT
1 SET
ST PACKAGE
3-LEAD PLASTIC SOT-223
TJMAX = 150°C, θJA = 25°C/W, θJC = 15°C/W
TAB IS
OUT
FRONT VIEW
3
2
1
IN
OUT
SET
M PACKAGE
3-LEAD PLASTIC DD-PAK
TJMAX = 150°C, θJA = 14°C/W, θJC = 3°C/W
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT3088EDD#PBF
LT3088EDD#TRPBF
LGSZ
8-Lead (3mm × 3mm) Plastic DFN
–40°C to 125°C
LT3088IDD#PBF
LT3088IDD#TRPBF
LGSZ
8-Lead (3mm × 3mm) Plastic DFN
–40°C to 125°C
LT3088HDD#PBF
LT3088HDD#TRPBF
LGSZ
8-Lead (3mm × 3mm) Plastic DFN
–40°C to 150°C
LT3088EST#PBF
LT3088EST#TRPBF
3088
3-Lead Plastic SOT-223
–40°C to 125°C
LT3088IST#PBF
LT3088IST#TRPBF
3088
3-Lead Plastic SOT-223
–40°C to 125°C
LT3088HST#PBF
LT3088HST#TRPBF
3088
3-Lead Plastic SOT-223
–40°C to 150°C
LT3088MPST#PBF
LT3088MPST#TRPBF 3088
3-Lead Plastic SOT-223
–55°C to 150°C
LT3088EM#PBF
LT3088EM#TRPBF
LT3088M
3-Lead Plastic DD-Pak
–40°C to 125°C
LT3088IM#PBF
LT3088IM#TRPBF
LT3088M
3-Lead Plastic DD-Pak
–40°C to 125°C
LT3088HM#PBF
LT3088HM#TRPBF
LT3088M
3-Lead Plastic DD-Pak
–40°C to 150°C
LT3088MPM#PBF
LT3088MPM#TRPBF
LT3088M
3-Lead Plastic DD-Pak
–55°C to 150°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/. Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix.
3088fb
2 For more information www.linear.com/LT3088


Part Number LT3088
Description 800mA Single Resistor Rugged Linear Regulator
Maker Linear Technology
Total Page 26 Pages
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