| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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79 pcs
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79 pcs | On Request | 1 | On Request | On Request | 19+ | On Request | On Request |
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The LT8309IS5#PBF by Linear Technology is a secondary-side synchronous rectifier driver designed to replace the output rectifier diode in flyback topologies. This component enables applications to overcome the heat constraints associated with traditional output diodes by utilizing a N-channel MOSFET. It accurately replicates diode behavior by sensing the drain-to-source voltage.
Key electrical specifications include an operating voltage range of 4.5V to 40V (VCC) and a fast 26ns turn-off propagation delay, allowing operation in discontinuous and critical conduction modes. It also features an adjustable trip point from +5mV to –30mV and a 1Ω gate driver pull-down for rapid turn-offs. The device supports MOSFETs up to 150V.
Packaged in a 5-lead SOT-23 surface-mount package, the LT8309IS5#PBF is suitable for designs requiring increased current capability and simplified thermal management in flyback converters. Its design contributes to improved efficiency and reduced heat dissipation compared to standard rectifier diodes.
4.5V to 40V.
-40°C to 85°C.
SOT-23.
26 ns.
Yes, adjustable from +5mV to –30mV.
Up to 150V.
1 Ω.