Electronics ru
Advanced Search +

Datasheet Linear Technology LT8309IS5#PBF

ManufacturerLinear Technology
Part NumberLT8309IS5#PBF

Secondary-Side Synchronous Rectifier Driver


  • Download » Datasheet, PDF, 232 Kb, Revision: A
    LT8309 - Secondary-Side Synchronous Rectifier Driver
    Docket ↓
    Synchronous Rectifier Driver
    Features Description Works with DCM and BCM/CrCM Conduction Mode
    Flyback Topologies
    n V : 4.5V to 40V
    n Supports Up to 150V MOSFETs
    n 26ns Turn-Off Propagation Delay
    n Accurate Minimum On and Off Timers for Reliable
    Operatio Adjustable and Accurate Trip Point: +5mV to –30mV
    n 1О© Gate Driver Pull-Dow SOT-23 5-Lead Package The LTВ®8309 is a secondary-side synchronous rectifier
    driver that replaces the output rectifier diode in a flyback
    topology. By replacing the diode with a N-channel MOSFET,
    applications are no longer restricted by the heat constraints
    of the output diode. The IC replicates the behavior of a
    diode by sensing the drain-to-source voltage to determine
    when the current becomes negative. The LT8309's low
    minimum on-and off-times help improve noise immunity. n The fast propagation delay of 26ns allows applications to
    operate in discontinuous conduction mode (DCM) and
    critical conduction mode (CrCM). The gate driver features
    a 0.8О© pull-down device for fast turn-offs. The 40V VCC
    rating allows the part to be driven from the output voltage or the rectified drain voltage of the MOSFET. A low ...



Package CodeS5


Export Controlno yes/no
Number of Outputs1
Operating Temperature Range-40 to 85 °C
Vin Max40 V
Vin Min4.5 V

Eco Plan


Moldel Line

Series: LT8309 (9)

Manufacturer's Classification

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

Other Names:


Slices ↓
Radiolocman facebook Radiolocman twitter Radiolocman google plus