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Product Detailed Parameters
- Description：IC LED DRIVER OFFL PWM 24VQFN
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：AC DC Offline Switcher
- Topology：Flyback, Step-Down (Buck)
- Internal Switch(s)：No
- Number of Outputs：2
- Voltage - Supply (Min)：9.5V
- Voltage - Supply (Max)：15V
- Voltage - Output：-
- Current - Output / Channel：-
- Frequency：-
- Dimming：PWM
- Applications：Lighting
- Operating Temperature：-40°C ~ 105°C (TA)
- Mounting Type：Surface Mount
- Package / Case：24-VFQFN Exposed Pad
- Supplier Device Package：24-VQFN (4x4)
- Grade：-
- Qualification：-
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Overview
The MSL2023-INR is an obsolete offline LED driver IC from Microchip Technology, designed for high Color Rendering Index (CRI) luminaires. It features a two-string driver architecture with individual PWM dimming capabilities and adaptive headroom control. The device operates in flyback or step-down topologies and supports serial communication for automatic Correlated Color Temperature (CCT) control. Packaged in a 24-pin VQFN (4x4 mm) format, it integrates power switching functions for AC-DC conversion.
Feature Summary
- Supports two independent LED strings with individual pulse-width modulation dimming
- Integrates adaptive headroom control to optimize efficiency across varying load conditions
- Enables automatic CCT adjustment via serial interface communication
- Combines offline AC-DC power conversion with integrated LED driving logic
Applications
- High CRI LED lighting fixtures
- Commercial architectural lighting systems
- Smart lighting networks requiring color temperature control
Procurement Notes
This component is officially marked as obsolete and no longer manufactured by Microchip Technology. Verification of availability should focus on surplus distributors rather than direct factory channels. Engineers must confirm the authenticity of existing stock through authorized supply chain partners. Design-in activities are discouraged due to end-of-life status; alternative solutions should be evaluated immediately.
Selection Notes
Designers seeking similar functionality should evaluate current Microchip LED driver families that support dual-string architectures. Modern replacements typically offer enhanced thermal performance and updated communication protocols. Verify package compatibility if substituting into existing footprints, as newer generations may utilize different pinouts or thermal pad configurations compared to the legacy 24-VQFN form factor.
Part Context
The MSL2023 belongs to a series of specialized LED drivers developed for professional lighting applications. It succeeded earlier single-string models by providing independent channel control. The INR suffix indicates a specific reel packaging variant within the product line. This part represents a transition phase in Microchip's portfolio toward more integrated smart lighting solutions.
Replacement Considerations
Official substitutes include the MSL2024, which shares the same functional family. Users should verify pinout compatibility before transitioning. No other cross-manufacturer equivalents are confirmed in public documentation.
