Monolithic Power Systems Inc. MP4060GS

Overview

MP4060GS from Monolithic Power Systems is a TRIAC-dimmable, primary-side control LED controller for 200–265VAC input, integrating PFC and boundary-conduction mode operation to achieve >0.9 power factor, deep dimming range (0–100%), and thermal foldback at 145°C. It drives non-isolated buck-boost or isolated dual-channel LED drivers up to 50W in residential and commercial lighting.

For engineers reviewing the MP4060GS datasheet, MP4060GS pinout, MP4060GS application, or MP4060GS equivalent, key selection criteria include its adaptive leading/trailing-edge dimmer detection (tLD = 100μs, tTL = 450μs), integrated active bleeder control on BD pin, real-current control architecture enabling ±3% LED current regulation without secondary feedback, and SOIC-8 package with internal 250mΩ MOSFET.

Technical Context

The MP4060GS implements real-current control using primary-side ZCD sensing and MULT-based sinusoidal reference generation to shape input current waveform-enabling high PF (>0.9) and low THD without secondary feedback. Its multiplier output (K = 1.25 1/V) scales VCOMP to generate cycle-by-cycle current limit thresholds clamped between 10mV and 2.17V.

Dimming phase detection uses VMULT thresholds (VMULT_ON = 0.28V, VMULT_OFF = 0.1V) with adaptive blanking (DOFF_LEB = 30%) and dedicated detection logic for leading-edge (VMULT_LD_HIGH = 0.28V) and trailing-edge (VMULT_TL_HIGH = 0.45V) dimmers-ensuring compatibility across standard household TRIAC dimmers.

Key Specifications

Pinout & Package

MP4060GS is housed in an SOIC-8 package with exposed pad (thermal performance θ_JA = 96°C/W). Pin functions are validated per MPS datasheet Rev. 1.0 and confirmed on official Monolithic Power website.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar TRIAC-dimmable LED controller applications.

Compared with NCL30000 and AL1676, MP4060GS uniquely integrates bleeder control, thermal foldback, and DIM-based CCT tuning-making it the only option among the three qualified for EN61000-3-2 Class C compliance and residential warm-dim retrofit applications.

Availability

MP4060GS is available at Aetrix Electronics and suitable for residential LED lamps, commercial downlights, and industrial high-bay fixtures requiring stable component supply, RoHS-compliant packaging, and long-lifecycle availability.

Supply support for MP4060GS 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

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance analog and power ICs, with design centers in the US, China, and Taiwan.

The MP4060 product line targets cost-sensitive, high-efficiency AC/DC LED drivers for global mains-powered lighting-emphasizing integration, dimmer compatibility, and thermal resilience without secondary feedback.

FAQ

What is the maximum LED output power supported by MP4060GS?

The MP4060GS is rated for solid-state lighting applications up to 50W, as confirmed in the "Applications" section of the official datasheet. This rating assumes operation at 230VAC input, 85°C ambient, and proper thermal design with SOIC-8 θ_JA = 96°C/W. Output power scales with input voltage and heatsinking capability.

Does MP4060GS require an auxiliary winding for VCC supply?

No-MP4060GS features an integrated JFET-based VCC charging circuit connected to the D pin, enabling startup without an auxiliary winding. During normal operation, VCC can be sustained either by the auxiliary winding or directly from the D pin, providing design flexibility in non-isolated topologies.

How does the MP4060GS detect leading-edge versus trailing-edge dimmers?

It uses adaptive VMULT threshold comparison: leading-edge detection triggers on VMULT rising edge at 0.28V with 100μs response time (tLD), while trailing-edge detection uses VMULT falling edge at 0.45V with 450μs response (tTL). The IC automatically selects DP current sources (IDP_STRONG_LD = 35mA or IDP_TL = 150mA) based on detected type.

Can MP4060GS drive both constant-current and constant-voltage LED loads?

No-it is designed exclusively for constant-current LED string regulation using real-current control. The output current is set by VREF (0.414V), transformer turns ratio (N), and sense resistor (RS) per Equation (1) in the datasheet. Constant-voltage operation requires external circuitry not supported by the IC's architecture.

What protection features are included and how do they recover?

MP4060GS includes output over-voltage (OVP), output short-circuit (SCP), winding short-circuit, over-temperature (OTP), and over-current (OCP) protection-all with auto-restart behavior. Upon fault, VCC drops below 7.15V (VCCEN), triggering internal recharge; recovery occurs after AC line cycles, eliminating need for manual reset.

Is the BD pin compatible with standard active bleeder ICs like the MPS MP4001?

Yes-the BD pin is an open-drain output with R_DS(ON) = 115Ω at 5mA, designed to interface directly with the enable input of active bleeder controllers such as MP4001. It pulls the bleeder control signal low during dimmer conduction intervals to eliminate standby power waste.

What is the typical efficiency of an MP4060GS-based 30W LED driver at 230VAC?

Per Figure 11 in the datasheet, a typical MP4060GS-based 30W design achieves 88–90% efficiency at 230VAC/50Hz full load. Efficiency remains above 85% down to 10% load due to boundary-conduction mode operation and low quiescent current (IQ = 1.5mA).