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Microchip Technology CL8801K63-G-M935
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- Part No.:
- CL8801K63-G-M935
- Manufacturer:
- Microchip Technology
- Category:
- LED Drivers
- Package:
- 33-VFQFN Exposed Pad
- Datasheet:
-
CL8801K63-G-M935.pdf
- Description:
- IC LED DRIVER OFFL 33QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,024
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Product details
Overview
CL8801K63-G-M935 from Microchip Technology is a sequential linear LED driver IC designed for direct AC mains operation, supporting up to 7.5W output (13W with heatsink), >0.95 power factor, <30% THD line current, and phase-dimmer compatibility via external RC network - used in retrofit LED tube drivers and bulb replacements.
For engineers reviewing the CL8801K63-G-M935 datasheet, CL8801K63-G-M935 pinout, CL8801K63-G-M935 application, or CL8801K63-G-M935 equivalent, key selection criteria include tap-specific current regulation (60/90/200/200 mA), high-voltage tap ratings (up to 400 V non-conducting), thermal derating behavior, QFN-33 package thermal resistance (θJA = 24°C/W), and bias voltage tolerance (up to 440 V).
Technical Context
The CL8801K63-G-M935 implements a four-tap sequential linear regulation architecture: four independent current sinks (TAP1–TAP4) are activated in sequence across the AC sine wave, minimizing voltage drop across each regulator during conduction to achieve 85% typical electrical efficiency and >110 lm/W system efficacy.
Each tap's output current is set by an external resistor on its dedicated SET pin (SET1–SET4), with regulated reference voltages of 2.0 V (SET1–SET3) and 2.1 V (SET4); BIAS pin supplies internal circuitry from rectified AC, while GND pins serve dual roles as signal reference and thermal ground plane via exposed underside plate.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current (TAP1) | 60 mA max - sets peak current for first LED string segment during low-voltage portion of AC cycle |
| Output Current (TAP2) | 90 mA max - higher current for mid-cycle segment, enabling balanced power distribution |
| Output Current (TAP3/TAP4) | 200 mA max each - supports high-current segments during peak AC voltage, critical for luminous utilization |
| Non-conducting Output Voltage (TAP1) | 400 V - withstands full rectified AC peak at 120 VAC input without breakdown |
| Non-conducting Output Voltage (TAP2–TAP4) | 300 V - rated for lower-voltage segments, reducing silicon stress and improving reliability |
| BIAS Pin Voltage Range | Up to 440 V - accommodates full-wave rectified 230 VAC mains (≈325 V peak) with margin |
| Junction Temperature Range | –55°C to +125°C - enables operation in enclosed, thermally constrained lighting fixtures |
| Thermal Resistance θJA | 24°C/W - requires 4 cm² copper pad with thermal vias for safe 7.5 W continuous operation |
Pinout & Package
CL8801K63-G-M935 uses a 33-lead QFN (6 mm × 6 mm) package with exposed thermal pad. High-voltage pins (TAP1–TAP4, BIAS) are grouped on one side to minimize inter-pin voltage gradients; 21 GND pins provide robust thermal sinking and noise immunity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1–8, 19–26) | Ground reference & thermal sink | Electrically connects to PCB ground plane and transfers heat from die to copper area via underside plate |
| SET1–SET4 | Current sense reference input | Resistor-connected pins that set tap currents via internal 2.0 V / 2.1 V regulators - determines LED string brightness per segment |
| TAP1–TAP4 | Linear current sink outputs | High-voltage collector terminals driving LED string taps - conduct sequentially to track AC waveform |
| BIAS | High-voltage bias supply input | Connects to rectified AC to power internal circuitry; must withstand ≥440 V transient conditions |
Key Features
| Feature | Design Value |
|---|---|
| No magnetics or bulk capacitors | Enables ultra-low-BOM-count driver design (CL8801 + 4 resistors + bridge rectifier), reducing cost and size vs. switch-mode alternatives |
| Phase dimmer compatibility | Supports TRIAC-based dimmers via optional external RC network - avoids flicker and ensures latching current at turn-on edge |
| 85% LED luminous utilization | Minimizes wasted light by dynamically matching LED string voltage to instantaneous AC input, reducing unlit segments |
| Low conducted EMI | Eliminates need for EMI filters due to absence of high-frequency switching - simplifies EMC compliance for Class B lighting |
| Four independent current regulation | Allows segmented LED string design with per-tap current optimization - improves line/load regulation and thermal management |
| Transient protection ready | Designed to interface directly with two-stage MOV/TVS networks (e.g., 2.5 kV EN 61000-4-5 compliant) without internal clamping |
Applications
| Fluorescent Tube Retrofit | Incandescent Bulb Replacement |
|---|---|
Use Scenario: Replacing T8/T12 fluorescent tubes with LED equivalents in commercial ceiling fixtures powered by 120/230 VAC mains. IC Role / Device Role / Timing Role: CL8801K63-G-M935 acts as the primary AC-direct linear current controller, sequencing four LED string taps to match sinusoidal input voltage and eliminate flicker. Use Value: Achieves >0.95 power factor and <30% THD without PFC circuitry - meets IEC 61000-3-2 Class C requirements for lighting equipment. | Use Scenario: Designing A19 or PAR30 LED bulbs that plug directly into standard E26/E27 sockets with universal AC input. IC Role / Device Role / Timing Role: CL8801K63-G-M935 serves as the core constant-current driver, regulating four LED segments to maintain stable luminance across 90–264 VAC input range. Use Value: Delivers 85% typical electrical efficiency and >110 lm/W using efficient LEDs - exceeds ENERGY STAR v2.1 efficacy thresholds for directional lamps. |
| CFL Replacement Lamp | Dimmable LED Downlight |
Use Scenario: Compact integrated LED lamp replacing spiral CFLs in table lamps and enclosed fixtures where space and EMI are constraints. IC Role / Device Role / Timing Role: CL8801K63-G-M935 functions as the single-chip AC mains driver, eliminating transformers and electrolytic capacitors to enable slim form factor. Use Value: Provides >0.95 power factor and no audible noise - eliminates hum common in magnetic-ballast CFLs and transformer-based LED drivers. | Use Scenario: Recessed LED downlights requiring smooth 10–100% phase-dimming performance with legacy TRIAC wall dimmers. IC Role / Device Role / Timing Role: CL8801K63-G-M935 operates as the dimmable linear LED controller, using external RC network to ensure sufficient latching current for reliable dimmer triggering. Use Value: Maintains >90% relative light output at 10% dim level without color shift - enabled by precise tap-current sequencing and minimal valley fill requirement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar sequential linear LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL8862T-7 | Single-channel buck-boost DC/DC controller; requires external MOSFET and inductor; supports 12–60 V input only | Not AC-mains direct; requires offline AC/DC front-end; suited for battery-powered or low-voltage LED systems | Select AL8862T-7 when designing isolated or wide-input DC-powered LED drivers where size and EMI filtering are secondary to efficiency |
| BP5758D | Single-stage AC/DC linear LED driver with integrated HV transistor; fixed 3-tap architecture; no external SET resistors | Limited adjustability - output current and segment count are factory-configured; lacks TAP4 flexibility of CL8801K63-G-M935 | Choose BP5758D for cost-sensitive, high-volume bulb designs where programmability is unnecessary and BOM minimization is critical |
Compared with AL8862T-7 and BP5758D, CL8801K63-G-M935 uniquely supports four independently adjustable current taps directly from AC mains without magnetics or electrolytics - making it optimal for high-efficiency, low-EMI, dimmable tube and bulb retrofits where thermal management and power factor are tightly constrained.
Availability
CL8801K63-G-M935 is available at Aetrix Electronics and suitable for fluorescent tube retrofit, incandescent bulb replacement, and dimmable downlight applications requiring stable component supply, RoHS-compliant packaging, and long-lifecycle support.
Supply support for CL8801K63-G-M935 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 power management ICs, with ISO/TS 16949-certified manufacturing and global technical support.
The CL8801 product line was developed specifically for cost-sensitive, high-reliability AC-mains-driven LED lighting - targeting retrofit solutions where simplicity, efficiency, and regulatory compliance outweigh switching complexity.
FAQ
What is the maximum continuous output power supported by CL8801K63-G-M935?
The CL8801K63-G-M935 supports up to 7.5 W output continuously under standard thermal conditions (one-ounce copper, 4 cm² pad). With an external heatsink, output power extends to 13 W - verified per DS20005601A-page 1. This rating assumes proper PCB layout, adequate airflow, and adherence to the 24°C/W θJA thermal limit specified for the 33-lead QFN package.
Can CL8801K63-G-M935 drive LED strings directly from 230 VAC mains?
Yes, CL8801K63-G-M935 is designed for direct connection to rectified 230 VAC mains. Its BIAS pin tolerates up to 440 V, and TAP1 supports 400 V non-conducting voltage - safely accommodating the ≈325 V peak of full-wave rectified 230 VAC. TAP2–TAP4 are rated for 300 V, requiring appropriate LED string segmentation to stay within limits.
How does CL8801K63-G-M935 achieve high power factor without active PFC?
CL8801K63-G-M935 achieves >0.95 power factor through sequential linear regulation: by activating four current sinks in phase with the AC sine wave, it draws current in proportion to instantaneous voltage - resulting in near-resistive input behavior. No external PFC circuitry is needed, unlike switch-mode drivers that require complex boost stages to meet IEC 61000-3-2.
What thermal design guidelines apply to CL8801K63-G-M935?
CL8801K63-G-M935 requires a minimum 4 cm² exposed copper area connected to all 21 GND pins and the underside thermal pad, with an array of thermal vias to inner/ground layers. Per DS20005601A-page 4, this achieves θJA = 24°C/W. For 7.5 W operation, junction temperature must remain ≤125°C - implying ambient ≤85°C with proper heatsinking.
Is CL8801K63-G-M935 compatible with leading-edge TRIAC dimmers?
Yes, CL8801K63-G-M935 supports leading-edge TRIAC dimming via an external RC network across the AC line (DS20005601A-page 7, Figure 3-3). The network provides a current spike at turn-on to meet latching current requirements. Tap1's 60 mA max output exceeds typical dimmer holding current (10–20 mA), ensuring stable dimming down to 10%.
CL8801K63-G-M935 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 33-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- AC DC Offline Switcher
- Topology:
- -
- Internal Switch(s):
- No
- Number of Outputs:
- 4
- Voltage - Supply (Min):
- 90V
- Voltage - Supply (Max):
- 275V
- Voltage - Output:
- 70V ~ 350V
- Current - Output / Channel:
- -
- Frequency:
- -
- Dimming:
- -
- Applications:
- Lighting
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 33-QFN (6x6)
CL8801K63-G-M935 FAQ
1.How can I place an order for CL8801K63-G-M935 through Aetrix?
Please submit a Request for Quotation (RFQ) for CL8801K63-G-M935 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 CL8801K63-G-M935 reliable?
The price and inventory of CL8801K63-G-M935 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CL8801K63-G-M935 is usually 5 days.
3.What payment methods are accepted for CL8801K63-G-M935?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CL8801K63-G-M935 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CL8801K63-G-M935?
CL8801K63-G-M935 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CL8801K63-G-M935 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 CL8801K63-G-M935?
For technical support, including CL8801K63-G-M935 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CL8801K63-G-M935 requirements.
6.How does Aetrix verify that CL8801K63-G-M935 is sourced from the original manufacturer or authorized distributors?
All CL8801K63-G-M935 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 CL8801K63-G-M935 meets industry standards.
7.What is the process for return or replacement of CL8801K63-G-M935?
All CL8801K63-G-M935 units undergo pre-shipment inspection (PSI). If there is an issue with CL8801K63-G-M935, 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 CL8801K63-G-M935 part is unused and in its original packaging.
Return procedure for CL8801K63-G-M935:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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