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Product Detailed Parameters
- Description：IC LED DRIVER OFFL SWITCHER 8DIP
- Series：-
- Mfr：Sanken Electric USA Inc.
- Package：Tube
- Type：AC DC Offline Switcher
- Topology：-
- Internal Switch(s)：Yes
- Number of Outputs：1
- Voltage - Supply (Min)：-
- Voltage - Supply (Max)：20V
- Voltage - Output：-
- Current - Output / Channel：-
- Frequency：-
- Dimming：-
- Applications：-
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Through Hole
- Package / Case：8-DIP (0.300", 7.62mm)
- Supplier Device Package：8-DIP
- Grade：-
- Qualification：-
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Overview
The LC5548LD is a single-stage power factor corrected off-line switching regulator manufactured by Sanken Electric USA Inc. Designed for LED driver applications, this component integrates power factor correction and regulation in a compact form factor. It features an internal switch with a breakdown voltage of 800V and an on-resistance of 3.5Ω. The device is housed in an 8-DIP package, suitable for through-hole mounting. It is part of the LC554x series, which includes variants like the LC5547LF and LC5546LF, offering different voltage ratings and resistance values for various flyback converter designs.
Feature Summary
- Integrates single-stage power factor correction with off-line switching regulation
- Includes an internal high-voltage switch rated at 800V
- Optimized for LED driver applications in ceiling lights and similar fixtures
Applications
- LED lighting systems
- Ceiling light fixtures
- Flyback converter designs
Procurement Notes
Verify the specific package type and pinout configuration against the official datasheet before integration. Confirm that the 800V rating and 3.5Ω on-resistance meet the circuit requirements. Check for any obsolescence notices or alternative recommendations from Sanken Electric, as availability may vary. Ensure compatibility with the intended thermal management solution for the 8-DIP package.
Selection Notes
Select the LC5548LD when an 800V internal switch is required for higher input voltage ranges compared to the 650V LC5546LF variant. Consider the 3.5Ω on-resistance for efficiency calculations in the target application. Compare with the LC5547LF if a TO-220F-7 package is preferred over the 8-DIP format. Evaluate the single-stage architecture benefits against multi-stage solutions for cost and complexity reduction.
Part Context
The LC5548LD belongs to the LC554x series of single-stage PFC off-line regulators developed by Sanken Electric. This series is designed to simplify LED driver design by combining PFC and constant current regulation. Other members include the LC5540LD/LF, LC5546LF (650V, 1.9Ω), and LC5547LF. These components are widely used in commercial and residential lighting applications requiring high power factor and low harmonic distortion.
Replacement Considerations
The LC5546LF is a related part with a 650V rating and 1.9Ω on-resistance in a TO-220F-7 package. The LC5547LF is also available in the same package but may have different electrical characteristics. Verify pin-to-pin compatibility and electrical parameters before substituting.
