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Product Detailed Parameters
- Description：IC LED DRIVER CTRLR PWM 8SOP
- Series：-
- Mfr：Lumissil Microsystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Controller
- Topology：Step-Down (Buck)
- Internal Switch(s)：No
- Number of Outputs：1
- Voltage - Supply (Min)：6V
- Voltage - Supply (Max)：450V
- Voltage - Output：-
- Current - Output / Channel：-
- Frequency：-
- Dimming：Analog, PWM
- Applications：Backlight, Lighting
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOP
- Grade：-
- Qualification：-
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Overview
The IS31LT3918-GRLS2-TR is a single-output DC-DC controller designed for LED driver applications. It supports step-down (buck) and step-up (boost) topologies, enabling flexible power conversion configurations. The device integrates analog and PWM dimming capabilities to regulate LED brightness effectively. Packaged in an 8-SOP format, it serves as a core component for managing LED illumination systems with efficient control mechanisms.
Feature Summary
- Supports both buck and boost DC-DC converter topologies for versatile LED driving
- Integrates analog and PWM dimming functions for precise brightness control
- Single-output design simplifies circuit architecture for LED applications
Applications
- LED lighting systems requiring buck or boost conversion
- General-purpose LED driver circuits
- Industrial signaling and illumination modules
Procurement Notes
Verify the specific package variant and tape-and-reel quantity against the manufacturer's latest datasheet before ordering. Confirm that the GRLS2 suffix corresponds to the required environmental rating and packaging specification for your production line. Ensure compatibility with existing PCB footprints for the 8-SOP package.
Selection Notes
Select this component when a single-output solution supporting both buck and boost operations is required. It is suitable for designs needing integrated dimming without external controllers. Evaluate input voltage ranges and output current requirements against the official electrical specifications to ensure proper thermal and performance margins.
Part Context
This part belongs to Lumissil Microsystems' LED driver IC portfolio, which focuses on power management and lighting control solutions. The IS31LT series typically addresses automotive and industrial lighting needs, offering integrated protection and control features to simplify system design and improve reliability in demanding environments.
Replacement Considerations
Check for direct substitutes within the IS31LT family that share identical pinouts and functional blocks. Verify if alternative packages from the same manufacturer offer equivalent electrical characteristics. Cross-reference with other manufacturers' buck/boost LED controllers only if interface and dimming methods are fully compatible.
