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Microchip Technology CL25N3-G
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- Part No.:
- CL25N3-G
- Manufacturer:
- Microchip Technology
- Category:
- LED Drivers
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
CL25N3-G.pdf
- Description:
- IC LED DRIVER LINEAR 25MA TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:557
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Product details
Overview
CL25N3-G from Microchip Technology is a two-terminal, temperature-compensated constant-current LED driver IC delivering 25 mA ±10% across 5V–90V input voltage range, with 0.01%/°C typical tempco and no external components required; it serves as a constant-current sink/source in industrial lamp indicators and accent lighting circuits.
For engineers reviewing the CL25N3-G datasheet, CL25N3-G pinout, CL25N3-G application, or CL25N3-G equivalent, this device is selected for stable current regulation in high-voltage LED biasing where thermal drift control, minimal BOM count, and parallel scalability to 75+ mA are critical design requirements.
Technical Context
The CL25N3-G implements an integrated bandgap-referenced control circuit with on-chip temperature compensation to maintain current regulation over –40°C to +125°C junction temperature. Its two-terminal architecture eliminates need for sense resistors or feedback networks.
Dynamic resistance of 300 kΩ ensures high output impedance and stable current delivery despite input voltage variation from 5V to 90V; operation above 45V requires duty-cycled pulse mode to limit power dissipation within the TO-92 package's 0.6W rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 25 mA ±10% - precise, factory-trimmed LED bias current across full 5–90V operating range |
| Operating Voltage | 5V to 90V - supports direct connection to unregulated DC rails including 24V, 48V, and 72V industrial supplies |
| Tempco | 0.01%/°C typical - enables stable LED brightness across ambient temperatures without external compensation |
| Junction Temp Range | –40°C to +125°C - rated for continuous operation in enclosed industrial enclosures and outdoor signage |
| Package Power Dissipation | 0.6W at TA = 25°C - defines maximum continuous DC power handling in TO-92 package before thermal derating |
| Dynamic Resistance | 300 kΩ - ensures high output impedance and minimal current variation vs. input voltage ripple or drift |
| Absolute Max Voltage | 100V - sets safe overvoltage margin for transient suppression design in 90V-rated systems |
Pinout & Package
CL25N3-G is supplied in a 3-lead TO-92 plastic package (JEDEC TO-92 variant), with leads arranged in standard linear configuration: Pin 1 = VA (supply/sink), Pin 2 = NC (no connection), Pin 3 = VB (source). The NC pin is internally unconnected and must remain floating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (VA) | Supply voltage input and constant-current sink terminal | Accepts 5–90V input; sinks regulated 25 mA from connected LED anode or load |
| Pin 2 (NC) | No internal connection | Must be left unconnected; not usable for grounding, bypassing, or thermal relief |
| Pin 3 (VB) | Constant-current source terminal | Delivers regulated 25 mA to LED cathode or load return path; forms two-terminal loop with VA |
Key Features
| Feature | Design Value |
|---|---|
| Two-terminal operation | Eliminates external sense resistor, feedback network, and PCB routing complexity - reduces BOM and layout area by ≥3 components |
| Parallel scalability | Multiple CL25N3-G units can be wired in parallel to deliver 50 mA, 75 mA, or 100 mA while maintaining matched regulation and thermal balance |
| Temperature-compensated current | 0.01%/°C typical drift enables consistent LED luminance across –40°C to +125°C without calibration or trimming |
| No external components | Operates standalone - no capacitors, resistors, or regulators needed - simplifies compliance testing and long-term reliability validation |
| Pb-free / RoHS-compliant | G-suffix confirms lead-free matte tin plating per JEDEC standards, supporting environmental compliance in industrial and commercial lighting |
Applications
| Industrial Lamp Indicators | LED Channel Lighting |
|---|---|
|
Use Scenario: Status indication in PLC I/O modules, motor starters, and panel-mounted HMIs where 24V–48V DC rails power discrete LEDs. IC Role / Device Role / Timing Role: Constant-current sink regulating LED forward current independent of supply variance or LED VF spread. Use Value: Ensures uniform brightness across indicator banks under varying line conditions and ambient temperature shifts. |
Use Scenario: Linear LED strips in architectural cove lighting, retail display backlighting, and signage requiring uniform illumination over 1–3 meter runs. IC Role / Device Role / Timing Role: Two-terminal current source driving series-connected LEDs from unregulated 48V or 72V distribution rails. Use Value: Eliminates need for individual current-setting resistors per channel, reducing component count and thermal hotspots. |
| Accent Lighting | High-Voltage LED Biasing |
|
Use Scenario: Low-power decorative lighting in hospitality, museum, and residential settings using 90V DC microgrids or legacy AC/DC supplies. IC Role / Device Role / Timing Role: Direct replacement for Zener-based current sources, providing tighter regulation and lower thermal drift. Use Value: Enables use of higher-efficiency LEDs without brightness inconsistency due to temperature or aging effects. |
Use Scenario: Driving high-VF LED strings (e.g., 20–30 white LEDs) in industrial UV curing lamps or emergency lighting where input exceeds 60V. IC Role / Device Role / Timing Role: Constant-current sink operating at up to 90V with pulse-mode capability to manage junction temperature. Use Value: Allows single-device biasing of long LED strings without switching converters - reduces EMI and system cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar constant-current LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL5809-2T24E | 30 mA fixed current, 2.5–60V input range, SOT-23-3 package, 1.2W dissipation | Limited to ≤60V systems; higher current but narrower voltage range than CL25N3-G | Select when operating below 60V and needing higher current density in space-constrained layouts |
| NSI45020AT1G | 20 mA ±10%, 45V max, SOD-123FL package, 0.5W dissipation, no tempco spec | Lower voltage/current rating and unspecified temperature coefficient; surface-mount only | Choose for cost-sensitive, low-power (<45V) applications where thermal stability is secondary to footprint size |
Compared with AL5809-2T24E and NSI45020AT1G, CL25N3-G uniquely supports 90V operation with 0.01%/°C tempco in through-hole TO-92 packaging - making it optimal for ruggedized, high-voltage, thermally stable LED biasing where board-level assembly and serviceability matter.
Availability
CL25N3-G is available at Aetrix Electronics and suitable for industrial lamp indicators, LED channel lighting, and accent lighting requiring stable component supply with long lifecycle visibility and RoHS-compliant sourcing.
Supply support for CL25N3-G includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and timing solutions, with ISO/TS-16949 certified manufacturing and global technical support infrastructure.
The CL25N3-G belongs to Microchip's constant-current LED driver product line, designed specifically for high-voltage, low-component-count LED biasing in industrial and commercial lighting where thermal stability and ease of integration are prioritized.
FAQ
What is the maximum continuous operating voltage for CL25N3-G?
The CL25N3-G is rated for continuous operation up to 90V across VA–VB terminals, with an absolute maximum rating of 100V. Operation above 90V requires transient verification and is not recommended for sustained use due to thermal limits in the TO-92 package.
Can CL25N3-G be used in parallel to increase output current?
Yes, CL25N3-G supports parallel operation to deliver higher currents such as 50 mA, 75 mA, or 100 mA. Multiple units share load evenly due to matched regulation and inherent thermal coupling, provided PCB layout ensures symmetrical trace lengths and thermal paths.
Does CL25N3-G require external components for basic operation?
No - CL25N3-G operates as a fully self-contained two-terminal constant-current source/sink. No external resistors, capacitors, or feedback components are needed, enabling direct connection between VA and VB terminals and the LED load.
What is the thermal performance limitation of CL25N3-G in TO-92 packaging?
The CL25N3-G in TO-92 has a maximum power dissipation of 0.6W at 25°C ambient. With 90V input and 25 mA current, power dissipation reaches 2.25W - necessitating pulsed operation or heatsinking to keep junction temperature ≤125°C per datasheet specifications.
How does the temperature coefficient of CL25N3-G affect LED brightness consistency?
The CL25N3-G's 0.01%/°C typical temperature coefficient ensures LED current remains stable across –40°C to +125°C junction temperature, minimizing brightness drift in uncontrolled environments - critical for industrial indicators and architectural lighting where visual consistency is specified.
CL25N3-G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA)
- Packaging:
- Bag
- Product Status:
- Active
- Type:
- Linear
- Topology:
- Constant Current
- Internal Switch(s):
- -
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 5V
- Voltage - Supply (Max):
- 90V
- Voltage - Output:
- 90V
- Current - Output / Channel:
- 25mA
- Frequency:
- -
- Dimming:
- -
- Applications:
- LED Lighting
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
CL25N3-G FAQ
1.How can I place an order for CL25N3-G through Aetrix?
Please submit a Request for Quotation (RFQ) for CL25N3-G on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CL25N3-G reliable?
The price and inventory of CL25N3-G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CL25N3-G is usually 5 days.
3.What payment methods are accepted for CL25N3-G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CL25N3-G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CL25N3-G?
CL25N3-G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CL25N3-G order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CL25N3-G?
For technical support, including CL25N3-G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CL25N3-G requirements.
6.How does Aetrix verify that CL25N3-G is sourced from the original manufacturer or authorized distributors?
All CL25N3-G products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CL25N3-G meets industry standards.
7.What is the process for return or replacement of CL25N3-G?
All CL25N3-G units undergo pre-shipment inspection (PSI). If there is an issue with CL25N3-G, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CL25N3-G part is unused and in its original packaging.
Return procedure for CL25N3-G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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