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Product Detailed Parameters
- Description：IC LED DRIVER OFFL PWM 8SOP
- Series：-
- Mfr：Richtek USA Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：AC DC Offline Switcher
- Topology：Step-Down (Buck), Step-Up (Boost)
- Internal Switch(s)：Yes
- Number of Outputs：2
- Voltage - Supply (Min)：4.5V
- Voltage - Supply (Max)：40V
- Voltage - Output：40V
- 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 RT8479CGSP is a two-stage hysteretic LED driver IC manufactured by Richtek USA Inc. It operates as an offline switcher with a maximum output voltage of 50V and supports both analog and PWM dimming methods. The device is housed in an 8-SOP-EP package and functions within a temperature range of -40°C to +85°C.
Feature Summary
- Two-stage hysteretic control architecture for efficient LED regulation
- Supports combined analog and PWM dimming capabilities
- Integrated offline switching functionality
Applications
- LED backlighting systems
- General LED lighting applications
- Automotive lighting circuits
Procurement Notes
Verify component authenticity through authorized distributors or the manufacturer directly. Confirm RoHS compliance status and check for any Product Change Notifications (PCN) regarding manufacturing updates. Ensure the specific suffix matches the required pinout and thermal characteristics for the target design.
Selection Notes
Select this component for designs requiring integrated offline switching without external MOSFETs. Consider the 50V output limit and 8-SOP-EP package constraints. Evaluate compatibility with existing dimming control signals and ensure thermal management aligns with the exposed pad requirement.
Part Context
This part belongs to Richtek's portfolio of power management ICs, specifically within the LED driver category. It complements other synchronous buck converters like the RT8290AGSP but targets different application domains involving direct AC/DC conversion for lighting loads rather than low-voltage DC-DC steps.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer for current alternatives if this specific variant is discontinued or unavailable.
