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Datasheet Linear Technology LT8304-1

ManufacturerLinear Technology
SeriesLT8304-1

100VIN Micropower No-Opto Isolated Flyback Converter with 150V/2A Switch

Datasheets

  • Download » Datasheet PDF, 1.2 Mb, File uploaded: Sep 19, 2017
    LT8304: 100VIN Micropower No-Opto Isolated Flyback Converter with 150V/2A Switch Data Sheet
    Docket ↓
    LT8304/LT8304-1
    100VIN Micropower
    No-Opto Isolated Flyback
    Converter with 150V/2A Switch
    FEATURES DESCRIPTION 3V to 100V Input Voltage Range
    nn 2A, 150V Internal DMOS Power Switch
    nn Low Quiescent Current:
    nn 116ВµA in Sleep Mode
    nn 390ВµA in Active Mode
    nn Quasi-Resonant Boundary Mode Operation at
    Heavy Load
    nn Low Ripple Burst ModeВ® Operation at Light Load
    nn Minimum Load < 0.5% (Typ) of Full Output
    nn No Transformer Third Winding or Opto-Isolator
    Required for Output Voltage Regulation
    nn Accurate EN/UVLO Threshold and Hysteresis
    nn Internal Compensation and Soft-Start
    nn Temperature Compensation for Output Diode
    nn Output Short-Circuit Protection
    nn Thermally Enhanced 8-Lead SO Package The LTВ®8304/LT8304-1 are monolithic micropower isolated flyback converters. By sampling the isolated output
    voltage directly from the primary-side flyback waveform,
    the parts require no third winding or opto-isolator for
    regulation. The output voltage is programmed with two ...

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Packaging

Parametrics

LT8304ES8E-1#PBFLT8304ES8E-1#TRPBFLT8304HS8E-1#PBFLT8304HS8E-1#TRPBFLT8304IS8E-1#PBFLT8304IS8E-1#TRPBF
Demo BoardsDC2393ADC2393ADC2393ADC2393ADC2393ADC2393A
Design ToolsLTspice FileLTspice FileLTspice FileLTspice FileLTspice FileLTspice File
Export Controlnononononono
FeaturesBoundary Mode Operation, No Opto Isolator, Burst ModeBoundary Mode Operation, No Opto Isolator, Burst ModeBoundary Mode Operation, No Opto Isolator, Burst ModeBoundary Mode Operation, No Opto Isolator, Burst ModeBoundary Mode Operation, No Opto Isolator, Burst ModeBoundary Mode Operation, No Opto Isolator, Burst Mode
Frequency, kHz350350350350350350
Integrated Inductornononononono
Ishutdown, µA1.81.81.81.81.81.8
Isupply, mA0.390.390.390.390.390.39
Monolithicyesyesyesyesyesyes
Number of Outputs111111
Operating Temperature Range, °C0 to 850 to 85-40 to 125-40 to 125-40 to 85-40 to 85
Polyphasenononononono
Synchronousnononononono
TopologyFlybackFlybackFlybackFlybackFlybackFlyback
Topology 1FlybackFlybackFlybackFlybackFlybackFlyback
Vin Max, V100100100100100100
Vin Min, V333333
Vin Min Startup, V333333

Eco Plan

Other Options

LT8304 LT8304 LT8304-1

Design Notes

  • Download » Design Notes - DN1047 PDF, 416 Kb, File published: Jan 22, 2018
    1000V Output, No-Opto Isolated Flyback
    Docket ↓
    Design Note
    1000V Output, No-Opto Isolated Flyback Converter
    George Qian, Michael Wu
    Introduction
    Isolated flyback converters are used in automotive,
    industrial, medical and telecom applications where the
    power supply must be reliable, easy-to-use, high voltage
    and isolated, and must provide excellent regulation over
    load, line and temperature. LTВ®8304-1 is an isolated noopto flyback converter specially optimized for high output
    voltage applications—providing outputs up to 1000V.
    Traditionally, the regulation feedback loop requires a bulky
    high voltage divider to directly sense the high output
    voltage, along with opto-couplers to convey feedback
    information back through the isolation barrier. The bulky
    resistor solution results because a 1206 resistor can handle
    200V maximum. So to sense 1000V, at least six 1206
    resistors are required, plus a small bottom resistor. 1000V/15mA Output, from a 4V–28V Input
    An LT8304-1 flyback converter design features a low
    component count. Figure 1 shows a complete 4V–28V
    VIN
    4V TO
    28V GND The guidelines for calculating voltage and current stress
    on the components surrounding the LT8304-1 are detailed ...

Moldel Line

Series: LT8304-1 (6)

Manufacturer's Classification

  • Power Management > Switching Regulator > Flyback, Forward and Isolated Controllers
  • Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Switching Regulators

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