Datasheet for LT1509ISW#PBF:
- Manufacturer Part Number : LT1509ISW#PBF
- Manufacturer : AD
- Description : Power Factor and PWM Controller IC
- Series : LT1509
- Reference Price : USD 3.48
- Our Price : We have a better price, contact us by email
- Product Type : Power Control
- Function : Offline Controllers/PFC
- Current Suggest : Production
- Status : Production
- ROHS Status : ROHS Compliant (Lead Free)
- Package Type : 20-Lead SOIC (Wide 0.3 Inch)
- Pins : 20
- MFG Package Case : 05-08-1620 (SW20)
- Part Type : OTH
- Standard Packing Type : Tube
- Standard Packing Quantity : 38
- Working Temperature : -40 to 125C
- Other Part Number : LT1509ISW#PBF
- 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 LT1509 is a complete solution for universal off-line switching power supplies utilizing active power factor correction. The PFC section is identical to the LT1248 PFC controller except the EN/SYNC pin is removed because PFC and PWM are synchronized internally.
The current mode PWM section (the LT1508 is the volt-age-mode counterpart) contains all the primary side functions to convert the PFC preregulated high voltage output to an isolated low voltage output. The PWM duty cycle is internally limited to 47% (maximum 50%) to prevent transformer saturation. PWM soft start begins when PFC output reaches the preset voltage. In the event of brief line loss,the PWM will be shut off when the PFC output voltage drops below 73% of the preset value.
Applications
- Universal Power Factor Corrected Power Supplies and Preregulators
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.
