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Product Detailed Parameters
- Description：IC LED DRIVER OFFL PWM 14SSOP
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR)
- Type：AC DC Offline Switcher
- Topology：Step-Down (Buck)
- Internal Switch(s)：No
- Number of Outputs：1
- Voltage - Supply (Min)：16V
- Voltage - Supply (Max)：39V
- Voltage - Output：-
- Current - Output / Channel：-
- Frequency：40kHz ~ 400kHz
- Dimming：Analog, PWM, TRIAC
- Applications：Lighting
- Operating Temperature：-40°C ~ 110°C (TA)
- Mounting Type：Surface Mount
- Package / Case：14-LSSOP (0.173", 4.40mm Width)
- Supplier Device Package：14-SSOP-B
- Grade：-
- Qualification：-
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Overview
The BD555BKFV-E2 is an AC/DC controller IC designed for mains dimmable LED lighting applications. It utilizes a step-down (buck) topology and operates as an offline switcher without internal switches. The device supports analog, PWM, and TRIAC dimming methods to adjust LED brightness. It features a single output channel capable of delivering up to 800 mA of output current. The component is housed in a compact SSOP-B14 package, suitable for space-constrained designs. It functions within a supply voltage range of 16 V and operates at a switching frequency of 100 kHz. The unit is rated for industrial temperature ranges from -40°C to +100°C.
Feature Summary
- Supports multiple dimming protocols including analog, PWM, and TRIAC control for flexible lighting integration.
- Designed specifically for AC/DC offline buck converter topologies in LED driver circuits.
- Capable of handling high output currents suitable for driving LED strings directly or via external components.
Applications
- Mains-powered dimmable LED lighting fixtures
- LED street lighting drivers
- Commercial indoor LED downlights
Procurement Notes
Verify the exact suffix E2 against the manufacturer's latest datasheet to ensure compatibility with RoHS directives and specific packaging requirements. Confirm that the SSOP-B14 footprint matches your PCB design constraints. Check for obsolescence status as this part may be marked as not for new designs in some distributor catalogs. Ensure thermal management strategies account for the specified power dissipation limits during operation.
Selection Notes
Select this component when designing AC/DC LED drivers requiring support for TRIAC, PWM, and analog dimming signals simultaneously. The choice is appropriate for applications needing a buck topology with a single output channel. Consider the SSOP-B14 package size relative to available board space. Verify that the input voltage range and operating temperature specifications align with the target environment's electrical and thermal conditions.
Part Context
This IC belongs to the BD555 series of LED lighting driver controllers manufactured by Rohm Semiconductor. These devices are engineered to simplify the design of efficient LED power supplies. The series typically integrates control logic for managing LED current regulation while supporting various dimming interfaces common in residential and commercial lighting systems.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer's official replacement guide or contact technical support for direct equivalents if this component is obsolete.
FAQ
What dimming methods does the BD555BKFV-E2 support?
It supports analog, PWM, and TRIAC dimming methods.
Is there an internal switch in the BD555BKFV-E2?
No, it is an AC/DC controller IC without internal switches.
