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The CL2K4-G is a high-voltage, linear constant-current LED driver introduced by Microchip Technology. Utilizing a linear topology, this device is optimized for LED lighting applications that require stable, reliable performance without the need for complex electromagnetic compatibility (EMC) design. Its wide input voltage range, simple application circuit, and robust package make it an ideal choice for medium- to low-power LED driving in applications such as commercial signage and architectural outline lighting.
Category:Integrated Circuits (ICs);Power Management (PMIC);LED Drivers
Manufacturer:Microchip Technology
Packaging:Tape & Reel (TR);Cut Tape (CT)
Part Status:Active
Type:Linear
Topology:Constant Current
Voltage - Supply (Min):5V
Voltage - Supply (Max):90V
Voltage - Output:90V
Current - Output / Channel:20mA
Applications:Signage
Operating Temperature:-40°C ~ 125°C (TJ)
Mounting Type:Surface Mount
Package / Case:TO-252-3, DPAK (2 Leads + Tab), SC-63
Supplier Device Package:TO-252 (DPAK)
Base Product Number:CL2
True Linear Constant Current Output: Provides a precise and stable 20mA output current, ensuring uniform LED brightness with no switching noise.
Extremely Wide Operating Voltage Range: Supports an input voltage from 5V to 90V, allowing direct compatibility with various power supplies (e.g., 12V, 24V, 48V systems) and simplifying power design.
High Voltage Output Capability: Capable of driving multiple LEDs in series, with a maximum output voltage of 90V, supporting long LED strings.
Minimal External Components: As a linear device, it requires no inductor or high-frequency switching control, resulting in a very simple circuit design and extremely low electromagnetic interference (EMI).
Excellent Thermal Package: Features a TO-252 (DPAK) package with an exposed thermal pad, facilitating heat transfer from the chip to the PCB for stable operation in high-temperature environments.
Wide Operating Temperature Range: Supports a junction temperature of -40°C to 125°C, suitable for various demanding indoor and outdoor environments.
Optimized for Signage Lighting: Provides a reliable and cost-effective driving solution for applications such as LED channel letters, light boxes, and outline lighting.
Commercial Signage and Advertising Lighting: Driving LED strips inside store signs, LED channel letters, and light boxes.
Architectural Decorative Lighting: Constant current driving for linear LED strips used in building outlines and edges.
Emergency and Exit Signs: Safety signage lighting requiring stable, reliable, and long-life drivers.
Indoor Display Case Lighting: Low-power LED lighting inside display cases for museums and retail stores.
Industrial Status Indicators: High-brightness LED indicators on equipment panels requiring constant current drive.
Simple DC Bus LED Lighting Systems: Directly driving LED modules in existing 24V or 48V DC power distribution systems.
The CL2K4-G is a simple, robust linear constant current LED driver. With its extremely wide voltage compatibility, stable constant current output, very low electromagnetic interference, and thermally efficient design, it provides an effective and reliable solution for medium- to low-power applications, particularly in signage and decorative lighting where noise sensitivity or design simplicity is a priority. For engineers seeking system reliability, design simplicity, and cost-effectiveness, the CL2K4-G is an excellent choice worth considering.
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