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Product Detailed Parameters
- Description：IC LED DRIVER RGLTR PWM 8SOP
- Series：-
- Mfr：Richtek USA Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Regulator
- Topology：Step-Down (Buck), Step-Up (Boost)
- Internal Switch(s)：No
- Number of Outputs：1
- Voltage - Supply (Min)：4.5V
- Voltage - Supply (Max)：40V
- Voltage - Output：-
- Current - Output / Channel：-
- Frequency：-
- Dimming：Analog, PWM
- Applications：Lighting, Signage
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Supplier Device Package：8-SOP-EP
- Grade：Automotive
- Qualification：-
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Overview
The RT8476AGSP is a single-output DC-DC controller IC designed for LED driver applications. It supports Buck and Boost topologies with an input voltage range of 4.5V to 50V and a maximum output voltage of 50V. The device operates at a switching frequency of 380kHz and features both analog and PWM dimming capabilities. Packaged in an 8-SOP-EP (Exposed Pad) format, it is rated for an operating temperature range of -40°C to 85°C.
Feature Summary
- Supports Buck and Boost converter topologies for flexible LED drive configurations
- Enables precise light control through combined analog and PWM dimming interfaces
- Integrated regulation circuitry for stable DC-DC conversion without external power switches
Applications
- Automotive lighting systems
- General illumination fixtures
- LED signage displays
Procurement Notes
Verify component authenticity as the RT8476AGSP has reached End-of-Life status with production cessation confirmed by the manufacturer. Sourcing should prioritize authorized distributors or verified surplus channels to ensure compliance with RoHS3 standards and proper handling of moisture sensitivity level 3 components during storage and assembly.
Selection Notes
Select this component for designs requiring integrated buck-boost regulation in a compact surface-mount package. Ensure the application utilizes compatible dimming signals and stays within the specified 4.5V to 50V supply limits. Consider thermal management requirements due to the exposed pad design and verify that the 380kHz frequency aligns with electromagnetic interference constraints.
Part Context
This part belongs to the Richtek RT8477A series family of LED drivers. It shares functional similarities with the RT8474AGSP but differs in topology support, offering both buck and boost capabilities compared to the buck-only configuration of its counterpart. Both devices utilize the same 8-SOP-EP package and share similar dimming features.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the End-of-Life status, alternative solutions require evaluating current equivalents from the manufacturer or designing around generic controllers if pin compatibility is not strictly required.
