Datasheet for LT8309ES5#TRMPBF:
- Manufacturer Part Number : LT8309ES5#TRMPBF
- Manufacturer : AD
- Description : Secondary-Side Synchronous Rectifier Driver IC
- Series : LT8309
- Reference Price : USD 1.472
- Our Price : We have a better price, contact us by email
- Product Type : Switching Regulators
- Function : Flyback, Forward and Isolated Controllers
- Current Suggest : Production
- Status : Production
- ROHS Status : ROHS Compliant (Lead Free)
- Package Type : 5-Lead SOT-23
- Pins : 5
- MFG Package Case : 05-08-1635
- Part Type : OTH
- Standard Packing Type : Reel
- Standard Packing Quantity : 500
- Working Temperature : -40 to 125C
- Other Part Number : LT8309ES5#TRMPBF
- Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
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The LT8309 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.
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 0.8Ω 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 quiescent current of 400μA maximizes efficiency at low output currents.
Applications
- High Output Current Flybacks
- High Efficiency Flybacks
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
