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LT1105IN#PBF

Description
IC 1.5 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDIP14, 0.300 INCH, PLASTIC, DIP-14, Switching Regulator or Controller
CategoryPower/power management    The power supply circuit   
File Size368KB,32 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
Download Datasheet Parametric Compare View All

LT1105IN#PBF Overview

IC 1.5 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDIP14, 0.300 INCH, PLASTIC, DIP-14, Switching Regulator or Controller

LT1105IN#PBF Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
MakerLinear ( ADI )
Parts packaging codeDIP
package instructionDIP,
Contacts14
Reach Compliance Codecompliant
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHING CONTROLLER
control modeCURRENT-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage30 V
Minimum input voltage12 V
Nominal input voltage20 V
JESD-30 codeR-PDIP-T14
JESD-609 codee3
Humidity sensitivity level1
Number of functions1
Number of terminals14
Maximum output current1.5 A
Package body materialPLASTIC/EPOXY
encapsulated codeDIP
Package shapeRECTANGULAR
Package formIN-LINE
Peak Reflow Temperature (Celsius)NOT SPECIFIED
Certification statusNot Qualified
Maximum seat height3.937 mm
surface mountNO
Switch configurationSINGLE
Maximum switching frequency200 kHz
Terminal surfaceMatte Tin (Sn)
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width7.62 mm
Base Number Matches1
LT1103/LT1105
FOR INFORMATION PURPOSES ONLY
OBSOLETE:
Offline Switching Regulator
DESCRIPTION
The LT
®
1103 Offline Switching Regulator is designed for
high input voltage applications using an external FET
switch whose source is driven by the open collector output
of the LT1103. The LT1103 is optimized for 15W to 100W
applications. For higher power applications or additional
switch current flexibility, the LT1105 is available and its
totem pole output drives the gate of an external FET.
Unique design of the LT1103/LT1105 eliminates the need
for an optocoupler while still providing
±1%
load and line
regulation in a magnetic flux-sensed converter. This sig-
nificantly simplifies the design of offline power supplies
and reduces the number of components which must cross
the isolation barrier to one, the transformer.
The LT1103/LT1105 current mode switching techniques
are well suited to transformer isolated flyback and forward
topologies while providing ease of frequency compensa-
tion with a minimum of external components. Low exter-
nal part count for a typical application combines with a
, LTC and LT are registered trademarks of Linear Technology Corporation.
Contact Linear Technology for Potential Replacement
FEATURES
I
I
I
I
I
I
I
I
I
I
I
±1%
Line and Load Regulation with No Optocoupler
Switch Frequency Up to 200kHz
Internal 2A Switch and Current Sense (LT1103)
Internal 1A Totem-Pole Driver (LT1105)
Start-Up Mode Draws Only 200µA
Fully Protected Against Overloads
Overvoltage Lockout of Main Supply
Protected Against Underdrive or Overdrive to FET
Operates in Continuous or Discontinuous Mode
Ideal for Flyback and Forward Topologies
Isolated Flyback Mode Has Fully Floating Outputs
APPLICATIONS
I
I
I
I
Up to 250W Isolated Mains Converter
Up to 50W Isolated Telecom Converter
Fully Isolated Multiple Outputs
Distributed Power Conversion Networks
TYPICAL APPLICATION
Fully Isolated Flyback 100kHz 50W Converter with Load Regulation Compensation
OPTIONAL OUTPUT FILTER
85V
AC
TO 270V
AC
MBR2045
10µH
5V
10A
50V
470µF
+
+
220µF
385V
220k
1W
499Ω
1000pF 100Ω
BRIDGE
RECTIFIER
+
LINE
FILTER
R!!
NGE AGE!!
DA LT
VO
HIGH
1N4148
1.5KE300A
5W
MUR150
+
*50V
3600µF
*OUTPUT CAPACITOR IS THREE 1200µF,
50V CAPACITORS IN PARALLEL TO
ACHIEVE REQUIRED RIPPLE CURRENT
RATING AND LOW ESR.
WINDINGS FOR
OPTIONAL
±12V
DC
OUTPUTS
5.25
5.20
5.15
5.10
TRANSFORMER DATA:
COILTRONICS CTX110228-3
L
(PRI)
= 1.6mH
N
PRI
:N
SEC
= 1:0.05
N
BIAS
:N
SEC
= 1:0.27
BAV21
BAV21
13k
1%
1N4148
39µF
35V
18.7k
FB
GND
4.75k
1%
0.047µF
330Ω
0.047µF
0.1µF
LT1103 TA13
V
IN
V
SW
LT1103
15V
V
C
OSC
BUK426-800A
+
10Ω
V
OUT
(V)
+
390pF
1µF
25V
Danger!! Lethal Voltages Present – See Text
U
+
U
U
Load Regulation
5.05
5.00
4.95
4.90
4.85
4.80
4.75
0
1
2
3
4
5
I
OUT
(A)
6
270V
AC
220V
AC
110V
AC
85V
AC
7
8
9
10
LT1103 TA02
1

LT1105IN#PBF Related Products

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Description IC 1.5 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDIP14, 0.300 INCH, PLASTIC, DIP-14, Switching Regulator or Controller IC 1.5 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDIP8, 0.300 INCH, PLASTIC, DIP-8, Switching Regulator or Controller IC 1.5 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDIP8, 0.300 INCH, PLASTIC, DIP-8, Switching Regulator or Controller IC 1.5 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDIP14, 0.300 INCH, PLASTIC, DIP-14, Switching Regulator or Controller
Is it Rohs certified? conform to conform to conform to conform to
Maker Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI )
Parts packaging code DIP DIP DIP DIP
package instruction DIP, 0.300 INCH, PLASTIC, DIP-8 DIP, 0.300 INCH, PLASTIC, DIP-14
Contacts 14 8 8 14
Reach Compliance Code compliant not_compliant compliant compliant
ECCN code EAR99 EAR99 EAR99 EAR99
Analog Integrated Circuits - Other Types SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER
control mode CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE
Control Technology PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION
Maximum input voltage 30 V 30 V 30 V 30 V
Minimum input voltage 12 V 12 V 8 V 8 V
JESD-30 code R-PDIP-T14 R-PDIP-T8 R-PDIP-T8 R-PDIP-T14
JESD-609 code e3 e3 e3 e3
Humidity sensitivity level 1 1 1 1
Number of functions 1 1 1 1
Number of terminals 14 8 8 14
Maximum output current 1.5 A 1.5 A 1.5 A 1.5 A
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code DIP DIP DIP DIP
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form IN-LINE IN-LINE IN-LINE IN-LINE
Peak Reflow Temperature (Celsius) NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED
Certification status Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height 3.937 mm 4.445 mm 4.445 mm 3.937 mm
surface mount NO NO NO NO
Switch configuration SINGLE SINGLE SINGLE SINGLE
Maximum switching frequency 200 kHz 200 kHz 200 kHz 200 kHz
Terminal surface Matte Tin (Sn) MATTE TIN Matte Tin (Sn) Matte Tin (Sn)
Terminal form THROUGH-HOLE THROUGH-HOLE THROUGH-HOLE THROUGH-HOLE
Terminal pitch 2.54 mm 2.54 mm 2.54 mm 2.54 mm
Terminal location DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED
width 7.62 mm 7.62 mm 7.62 mm 7.62 mm
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