 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
LT1105C Datasheet(PDF) 1 Page - Linear Technology |
|
|
|||||||||||||||||||||||||||||
LT1105C Datasheet(HTML) 1 Page - Linear Technology |
|
|
1 / 32 page  1 LT1103/LT1105 Offline Switching Regulator Load Regulation Danger!! Lethal Voltages Present – See Text s ±1% Line and Load Regulation with No Optocoupler s Switch Frequency Up to 200kHz s Internal 2A Switch and Current Sense (LT1103) s Internal 1A Totem-Pole Driver (LT1105) s Start-Up Mode Draws Only 200 µA s Fully Protected Against Overloads s Overvoltage Lockout of Main Supply s Protected Against Underdrive or Overdrive to FET s Operates in Continuous or Discontinuous Mode s Ideal for Flyback and Forward Topologies s Isolated Flyback Mode Has Fully Floating Outputs 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 Fully Isolated Flyback 100kHz 50W Converter with Load Regulation Compensation IOUT (A) 0 5.05 5.15 5.25 8 LT1103 TA02 4.95 4.85 4.75 2 4 6 10 4.80 4.90 5.00 5.10 5.20 1 3 57 9 220VAC 270VAC 85VAC 110VAC FEATURES DESCRIPTION s Up to 250W Isolated Mains Converter s Up to 50W Isolated Telecom Converter s Fully Isolated Multiple Outputs s Distributed Power Conversion Networks APPLICATIONS TYPICAL APPLICATION 220k 1W 499 Ω 39 µF 35V 1000pF 100 Ω 1N4148 13k 1% 4.75k 1% BUK426-800A MBR2045 10 µH 5V 10A 50V 470 µF *50V 3600 µF WINDINGS FOR OPTIONAL ±12VDC OUTPUTS 10 Ω 1 µF 25V 220 µF 385V BAV21 BAV21 390pF 1.5KE300A 5W MUR150 BRIDGE RECTIFIER + LINE FILTER 85VAC TO 270VAC + – TRANSFORMER DATA: COILTRONICS CTX110228-3 L(PRI) = 1.6mH NPRI:NSEC = 1:0.05 NBIAS:NSEC = 1:0.27 18.7k 0.047 µF 1N4148 330 Ω 0.1 µF LT1103 TA13 *OUTPUT CAPACITOR IS THREE 1200 µF, 50V CAPACITORS IN PARALLEL TO ACHIEVE REQUIRED RIPPLE CURRENT RATING AND LOW ESR. OPTIONAL OUTPUT FILTER 0.047 µF VC VSW GND OSC 15V LT1103 VIN FB DANGER!! HIGH VOLTAGE!! + + + + + , LTC and LT are registered trademarks of Linear Technology Corporation. |
Similar Part No. - LT1105C |
|
Similar Description - LT1105C |
|
|
Link URL |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link to Datasheet | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
