Microchip Technology CL88030T-E/MF

Overview

CL88030T-E/MF from Microchip Technology is a 4-tap sequential linear LED driver IC designed for offline AC-powered LED lighting systems. It operates directly from 120VAC/230VAC/277VAC inputs with ±15% tolerance, delivers ≥2W output power, features programmable overtemperature protection with gradual light reduction, and uses active line regulation to maintain stable output across input voltage variations. It targets LED lamps and fixtures requiring flicker-reduced, phase-cut dimmable illumination.

For engineers reviewing the CL88030T-E/MF datasheet, CL88030T-E/MF pinout, CL88030T-E/MF application, or CL88030T-E/MF equivalent, key selection considerations include its DFN-10 thermally enhanced package, four external gate-drive outputs (GT1–GT4), single-point current control architecture, OTP interface compatibility with NTC thermistors, and ALR-based line regulation without EMI filters or PFC circuitry.

Technical Context

The CL88030T-E/MF implements self-commutating sequential regulation using a shared current-sense node (CS) and four independent tap reference voltages (VGT1–VGT4), where VGT4 = 1.275 V (typ) and current ratios KTAP1–KTAP3 are precisely trimmed. Its internal shunt regulator powers the IC from the BIAS pin, accepting 10 mA max at up to 13 V, while all gate drivers operate with rail-to-rail swing relative to BIAS.

Active line regulation (ALR) adjusts the OTP limiting voltage in response to rectified AC voltage via an external RC network on the ALR pin, enabling constant output power across ±15% input variation. Overtemperature protection uses a full-bridge NTC interface on the OTP pin, delivering linear thermal derating from 0.90 V to 1.32 V threshold, with clamped output (1.575 V max) driving gradual current reduction.

Key Specifications

Pinout & Package

CL88030T-E/MF is housed in a thermally enhanced 10-lead DFN (3 mm × 3 mm × 0.9 mm) with exposed bottom heatslug (EP). No high-voltage pins are present; power dissipation occurs externally in FETs and LEDs, not the IC.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar sequential linear LED driver applications.

Compared with CL88031T-E/MF, CL88030T-E/MF offers simpler layout and lower component count for 4-segment strings, while AL8862T-13 provides higher efficiency in low-power DC-fed applications but lacks native AC mains compatibility and thermal derating linearity.

Availability

CL88030T-E/MF is available at Aetrix Electronics and suitable for LED lamps, commercial downlights, and dimmable LED tubes requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for CL88030T-E/MF 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 Inc. is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and power management ICs, with broad industrial and lighting portfolio coverage.

The CL88030T-E/MF belongs to Microchip's sequential linear LED driver product line, engineered specifically for cost-sensitive, transformerless AC-powered LED lighting with built-in thermal and line regulation - eliminating need for PFC, EMI filters, or complex feedback loops.

FAQ

What is the function of the ALR pin on the CL88030T-E/MF?

The ALR pin on the CL88030T-E/MF accepts a voltage derived from an external resistive divider across the rectified AC input. It feeds an internal circuit that dynamically adjusts the OTP limiting voltage to compensate for input line variations, thereby maintaining stable LED output power across ±15% AC voltage changes. This active line regulation requires no closed-loop sensing or additional ICs - only two resistors and one capacitor.

Can the CL88030T-E/MF be used with trailing-edge dimmers?

Yes, the CL88030T-E/MF is explicitly designed for compatibility with both leading-edge and trailing-edge phase-cut dimmers. Its internal architecture tolerates the high dv/dt and low-current hold requirements of MOSFET-based trailing-edge dimmers without external snubbers or compensation. Stable dimming performance down to 10% is achievable when combined with appropriate ALR and OTP tuning.

How does the CL88030T-E/MF implement overtemperature protection?

The CL88030T-E/MF implements overtemperature protection via its OTP pin, which interfaces with an external NTC thermistor in a full-bridge configuration. As LED temperature rises, NTC resistance drops, lowering the OTP pin voltage. When it falls within 0.90–1.32 V, the IC gradually reduces all tap currents - not cutting off abruptly - preserving lamp life and avoiding visible flicker during thermal stress.

What package type is used for the CL88030T-E/MF?

The CL88030T-E/MF uses a 10-lead DFN package (3 mm × 3 mm × 0.9 mm) with exposed thermal pad (EP), designated MF in Microchip's packaging system. This thermally enhanced package achieves θJC = 8°C/W and contains no high-voltage pins - all power dissipation occurs externally in the FETs and LEDs, not inside the CL88030T-E/MF die.

Is a heatsink required for the CL88030T-E/MF in typical LED lamp designs?

No dedicated heatsink is required for the CL88030T-E/MF in most applications because its DFN-10 package features an exposed thermal pad (EP) that transfers heat directly to the PCB copper pour. With ≥2 cm² of 2-oz copper connected to EP and proper thermal vias, the IC sustains full operation at +125°C junction temperature - sufficient for enclosed LED lamps up to 5 W output when paired with appropriately rated external FETs.