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Datasheet Linear Technology LT3512MPMS#PBF

Linear Technology LT3512MPMS#PBF

Manufacturer:Linear Technology
Series:LT3512
Part Number:LT3512MPMS#PBF

Monolithic High Voltage Isolated Flyback Converter

Datasheets

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    LT3512 Monolithic High Voltage Isolated Flyback Converter FeaTures DescripTion
    The LT3512 is a high voltage monolithic switching regulator specifically designed for the isolated flyback topology. No third winding or opto-isolator is required for regulation as the part senses output voltage directly from the primary-side flyback waveform. The device integrates a 420mA, 150V power switch, high voltage circuitry, and control into a high voltage 16-lead MSOP package with four leads removed. The LT3512 operates from an input voltage range of 4.5V to 100V and delivers up to 4.5W of isolated output power. Two external resistors and the transformer turns ratio easily set the output voltage. Off-the-shelf transformers are available for several applications. The high level of integration and the use of boundary mode operation results in a simple, clean, tightly regulated application solution to the traditionally tough problem of isolated power delivery.
    L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks and No RSENSE is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 5438499, 7471522. n 4.5V to 100V Input Voltage Range Internal 420mA, 150V Power Switch Boundary Mode Operation No Transformer Third Winding or Opto-Isolator Required for Regulation Improved Primary-Side Winding Feedback Load Regulation VOUT Set with Two External Resistors BIAS Pin for Internal Bias Supply and Power Switch Driver No External Start-Up Resistor 16-Lead MSOP Package applicaTions n Isolated Telecom Power Supplies Isolated Auxiliary/Housekeeping Power Supplies Isolated Industrial, Automotive and Medical Power Supplies Typical applicaTion
    48V to 5V Isolated Flyback Converter
    VIN 36V TO 72V 1F 4:1 1M EN/UVLO 43.2k VIN 169k 175H VOUT+ 5V 0.5A 11H 47F
    VOUT (V) 5.25 5.20 5.15 5.10 5.05 5.00 4.95 4.90 4.85 4.80 4.75 VIN = 72V VIN = 48V VIN = 36V Output Load and Line Regulation LT3512 RFB RREF VOUT 10k TC VC 57.6k SW GND BIAS 12.7k 4.7nF
    3512 TA01a 4.7F 0 100 200 300 400 LOAD CURRENT (mA) 500
    3512 TA01b 3512fb 1 LT3512 absoluTe MaxiMuM raTings
    (Note 1) pin conFiguraTion
    TOP VIEW EN/UVLO 1 VIN 3 GND BIAS NC GND 5 6 7 8 16 SW 14 RFB 12 11 10 9 RREF TC VC GND SW (Note 4) .150V VIN, EN/UVLO, RFB .100V VIN to RFB .6V BIAS .Lesser of 20V or VIN RREF,TC, VC .6V Operating Junction Temperature Range (Note 2) LT3512E, LT3512I . 40C to 125C LT3512H . 40C to 150C LT3512MP. 55C to 150C Storage Temperature Range . 65C to 150C MS PACKAGE 16(12)-LEAD PLA ...

Manufacturer's Classification

Power Management > Switching Regulator > Flyback, Forward and Isolated Controllers

Other Names: LT3512MPMSPBF, LT3512MPMS PBF

Docket:
LT3512 Monolithic High Voltage Isolated Flyback Converter FeaTures DescripTion
The LT3512 is a high voltage monolithic switching regulator specifically designed for the isolated flyback topology. No third winding or opto-isolator is required for regulation as the part senses output voltage directly from the primary-side flyback waveform. The device integrates a 420mA, 150V power switch, high voltage circuitry, and control into a high voltage 16-lead MSOP package with four leads removed. The LT3512 operates from an input voltage range of 4.5V to 100V and delivers up to 4.5W of isolated output power. Two external resistors and the transformer turns ratio easily set the output voltage. Off-the-shelf transformers are available for several applications. The high level of integration and the use of boundary mode operation results in a simple, clean, tightly regulated application solution to the traditionally tough problem of isolated power delivery.
L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks and No RSENSE is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 5438499, 7471522. n 4.5V to 100V Input Voltage Range Internal 420mA, 150V Power Switch Boundary Mode Operation No Transformer Third Winding or Opto-Isolator Required for Regulation Improved...

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