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Product Detailed Parameters
- Description：IC PFC CTR AVERAGE 300KHZ 16SOIC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Mode：Average Current
- Frequency - Switching：300kHz
- Voltage - Supply：15.5V ~ 27V
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：16-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：16-SO
- Current - Startup：250 µA
- Grade：-
- Qualification：-
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Overview
The LT1248IS#PBF is a power factor correction controller designed for universal off-line power systems. It operates with a fixed switching frequency of 300 kHz and utilizes average current mode control. The device supports a supply voltage range of 15.5 V to 27 V and features a startup current of 250 µA. It is housed in a 16-lead SOIC surface-mount package and is rated for an operating temperature range of -40°C to +125°C.
Feature Summary
- Provides active power factor correction for universal input AC-DC applications
- Implements fixed high-frequency PWM current averaging for precise control
- Operates within a wide industrial temperature range for robust performance
Applications
- Universal off-line power supplies
- Power factor correction circuits
- AC-DC converter designs
Procurement Notes
Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence per Analog Devices standards. Confirm the 16-SOIC package dimensions match your PCB footprint requirements. Ensure the 15.5V to 27V supply range aligns with your system's auxiliary power design. Check for any recent product change notices regarding pinout or electrical characteristics before finalizing procurement.
Selection Notes
Select this component when designing for universal line voltages requiring active PFC. The 300 kHz switching frequency offers a balance between efficiency and component size. The average current mode control simplifies compensation network design compared to peak current mode. Ensure the thermal management strategy supports the -40°C to +125°C operating range for industrial environments.
Part Context
The LT1248 series from Analog Devices focuses on efficient power factor correction. This specific IS variant denotes the industrial temperature grade and SOIC package. It complements other PMIC solutions by addressing harmonic distortion in offline power systems, ensuring compliance with regulatory standards for power quality.
Replacement Considerations
Cross-reference with LT1248CN#PBF for through-hole alternatives. Verify compatibility with LT1248IS#TRPBF if reel packaging is required instead of tube. Ensure functional equivalence in switching frequency and control topology before substitution.
