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LT1185CT#30PBF

Description
IC REG LIN POS/NEG ADJ 3A TO220
CategoryPower/power management    The power supply circuit   
File Size183KB,16 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
Download Datasheet Parametric View All

LT1185CT#30PBF Overview

IC REG LIN POS/NEG ADJ 3A TO220

LT1185CT#30PBF Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?conform to
MakerLinear ( ADI )
Parts packaging codeTO-220
Contacts5
Manufacturer packaging codeT
Reach Compliance Codenot_compliant
Samacsys DescriptionLDO Voltage Regulators Adj 3A Postive or Negative Low Dropout Regulator
AdjustabilityADJUSTABLE
Nominal dropback voltage 10.67 V
JESD-30 codeR-PZIP-T5
JESD-609 codee3
Maximum grid regulation rate (%/V)0.01
Maximum load regulation (%)0.3%
Output times1
Number of terminals5
Maximum operating temperature70 °C
Minimum operating temperature
Maximum output current 13 A
Maximum output voltage 125 V
Minimum output voltage 12.5 V
Package body materialPLASTIC/EPOXY
encapsulated codeZIP
Encapsulate equivalent codeZIP5,.15,.2,67TB
Package shapeRECTANGULAR
Package formIN-LINE
Certification statusNot Qualified
surface mountNO
technologyBIPOLAR
Terminal surfaceMatte Tin (Sn) - with Nickel (Ni) barrier
Terminal formTHROUGH-HOLE
Terminal pitch1.7 mm
Terminal locationZIG-ZAG
LT1185
Low Dropout Regulator
FEATURES
Low Resistance Pass Transistor: 0.25
Dropout Voltage: 0.75V at 3A
±
1% Reference Voltage
Accurate Programmable Current Limit
Shutdown Capability
Internal Reference Available
Full Remote Sense
Low Quiescent Current: 2.5mA
Good High Frequency Ripple Rejection
Available in 5-Lead TO-220 and DD Packages
The LT1185 uses a saturation-limited NPN transistor as
the pass element. This device gives the linear dropout
characteristics of a FET pass element with significantly
less die area. High efficiency is maintained by using special
anti-saturation circuitry that adjusts base drive to track
load current. The “on resistance” is typically 0.25Ω.
Accurate current limit is programmed with a single 1/8W
external resistor, with a range of zero to three amperes. A
second, fixed internal limit circuit prevents destructive
currents if the programming current is accidentally over-
ranged. Shutdown of the regulator output is guaranteed
when the program current is less than 1µA, allowing
external logic control of output voltage.
The LT1185 has all the protection features of previous
LTC regulators, including power limiting and thermal
shutdown.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
DESCRIPTIO
The LT
®
1185 is a 3A low dropout regulator with adjustable
current limit and remote sense capability. It can be used as
a positive output regulator with floating input or as a
standard negative regulator with grounded input. The
output voltage range is 2.5V to 25V, with
±1%
accuracy on
the internal reference voltage.
TYPICAL APPLICATIO
5V, 3A Regulator with 3.5A Current Limit
+
+
2µF
TANT
R
LIM
*
4.3k
REF
GND
FB
2.37k
+
V
IN
– V
OUT
(V)
V
IN
6V TO 16V
V
IN
LT1185
V
OUT
*CURRENT LIMIT = 15k/R
LIM
= 3.5A
U
U
+
2.67k
2µF
TANT
V
OUT
5V AT 3A
LT1185 • TA01
Dropout Voltage
1.6
1.4
1.2
1.0
T
J
= 25°C
0.8
0.6
0.4
T
J
= –55°C
0.2
0
0
1
2
LOAD CURRENT (A)
LT1185 • TA02
T
J
= 125°C
3
4
1185ff
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