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Monolithic Power Systems Inc. MP4032-2GS
- Part No.:
- MP4032-2GS
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- LED Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width), 7 Leads
- Datasheet:
-
MP4032-2GS.pdf
- Description:
- IC LED DRIVER OFFL TRIAC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,935
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Product details
Overview
MP4032-2GS from Monolithic Power Systems is a TRIAC-dimmable, offline LED driver IC with fully integrated 600V MOSFET, operating in boundary-conduction mode to achieve >0.9 power factor, ±3% LED current accuracy, and flicker-free dimming down to 5% brightness. It delivers up to 18W output in non-isolated buck-boost topology for residential and commercial lighting.
For engineers reviewing the MP4032-2GS datasheet, MP4032-2GS pinout, MP4032-2GS application, or MP4032-2GS equivalent, key selection criteria include internal MOSFET voltage rating (600V), real-current control architecture, ZCD-based zero-current switching, VCC auto-restart thresholds (7.5V/9.5V), and SOIC8-7A thermal resistance (θJA = 96°C/W).
Technical Context
The MP4032-2GS implements proprietary real-current control by comparing the CS-sensed inductor peak current against a sinusoidal reference derived from the MULT pin's rectified line voltage, enabling high power factor (>0.9) without external PFC circuitry. Its boundary-conduction mode operation ensures valley-switching via ZCD detection (0.35V threshold, 2.45μs blanking), eliminating turn-on losses and reducing EMI.
TRIAC dimming is implemented through phase-angle detection on the MULT pin (VMULT_L = 0.15V, VMULT_H = 0.34V), with extended dimming range up to 76% phase conduction. Protection functions include cycle-by-cycle current limiting (VCS_CLAMP_H = 2.24V), output over-voltage protection (5.30V ZCD OVP threshold), and thermal shutdown at 150°C with 50°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 85–265VAC, supports global mains input without re-design |
| Integrated MOSFET | 600V BVDSS, 10.5Ω RDS(ON) @ 125°C, eliminates external HV switch |
| Power Factor | >0.9 at full load, achieved via real-current control and boundary-mode operation |
| LED Current Accuracy | ±3% over line/load/temperature, enabled by 0.400V internal VREF and KCS=1 gain |
| Dimming Range | 5–100% brightness with leading-edge TRIAC, 76% max phase conduction |
| Thermal Shutdown | 150°C trip, 100°C recovery, prevents permanent damage during sustained overload |
| Start-up Supply | DRAIN pin charges VCC internally; no external start-up resistor required |
Pinout & Package
MP4032-2GS is housed in an SOIC8-7A package (8-pin, 7.6mm × 4.9mm, 1.27mm pitch), optimized for thermal dissipation (θJA = 96°C/W) in compact LED driver PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 COMP | Loop compensation node | Connects RC network to stabilize current regulation loop and set bandwidth |
| 2 MULT | Line voltage multiplier input | Accepts scaled rectified AC signal to generate sinusoidal current reference |
| 3 ZCD | Zero-current detection input | Triggers MOSFET turn-on at valley voltage; enables OVP via auxiliary winding sensing |
| 4 VCC | Internal supply rail | Powers control logic and gate driver; requires 22μF bulk capacitor for ripple suppression |
| 5 GND | Analog and power ground | Single-point return for CS, COMP, and ZCD; must be separated from power GND |
| 6 CS | Current sense input | Senses MOSFET source voltage across external Rs to regulate LED current |
| 7 NC | No connect | Not bonded; must remain unconnected per datasheet |
| 8 DRAIN | Integrated MOSFET drain | Connects to rectified AC bus; supplies start-up current to VCC via internal charger |
Key Features
| Feature | Design Value |
|---|---|
| Flicker-free TRIAC dimming | Extended 5–100% range via VMULT threshold tuning (0.15V/0.34V), eliminating shimmer at low brightness |
| Boundary-conduction mode | ZCD-triggered valley switching reduces EMI and improves efficiency by eliminating reverse-recovery loss |
| Internal 600V MOSFET | Eliminates external HV switch and associated gate drive complexity; rated for 1A continuous drain current |
| VCC auto-restart logic | Resumes operation after fault when VCC drops to 7.5V, ensuring robust recovery without manual reset |
| Real-current control | Direct inductor current sampling enables ±3% LED current accuracy independent of LED forward voltage variation |
Applications
| Residential LED Lamps | Commercial Downlights |
|---|---|
Use Scenario: Retrofit A19 and PAR30 bulbs replacing incandescent lamps in 120/230VAC environments. IC Role / Device Role / Timing Role: Primary offline LED driver controlling constant current in non-isolated buck-boost topology with TRIAC compatibility. Use Value: Enables direct replacement of legacy bulbs with flicker-free dimming, >0.9 PF, and no external MOSFET or PFC stage. | Use Scenario: Surface-mounted downlights in office ceilings using 18–24 series LEDs at 98mA. IC Role / Device Role / Timing Role: Boundary-mode controller regulating LED current while synchronizing switching to AC zero-crossings via ZCD. Use Value: Delivers stable light output under varying line voltage (±10%) and deep dimming (5%), meeting IEC 61000-3-2 Class C. |
| Industrial Panel Lighting | Smart Home Dimmable Fixtures |
Use Scenario: High-bay fixtures in warehouses with 277VAC input and 48V/350mA LED strings. IC Role / Device Role / Timing Role: Offline LED driver providing accurate current regulation and thermal foldback at junction temperatures >125°C. Use Value: Maintains ±5% current accuracy across -40°C to +125°C ambient, with OTP shutdown preventing LED degradation. | Use Scenario: Wi-Fi-enabled ceiling fixtures requiring seamless integration with legacy TRIAC wall dimmers. IC Role / Device Role / Timing Role: Dimming interface converter translating phase-cut waveform into precise LED current control. Use Value: Eliminates compatibility issues with leading-edge dimmers via adaptive MULT pin detection and extended dimming range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar offline LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP4032-2GZ | Tape-and-reel variant (same die, SOIC8-7A); identical electrical specs and pinout | No functional difference; used only for automated SMT assembly | Select MP4032-2GZ for volume production; MP4032-2GS for prototyping or small-batch orders |
| BP5772D | External MOSFET required; 500V rating; no integrated DRAIN charger; lower PF (~0.85) | Requires additional HV MOSFET, gate driver, and start-up circuit; less compact layout | Choose only if higher voltage margin (>600V) or discrete MOSFET selection flexibility is mandatory |
Compared with MP4032-2GS, MP4032-2GZ offers identical performance in tape-and-reel format for SMT lines, while BP5772D trades integration for voltage headroom and discrete component control-making MP4032-2GS optimal for space-constrained, high-PF, TRIAC-compatible designs.
Availability
MP4032-2GS is available at Aetrix Electronics and suitable for residential LED lamps, commercial downlights, and industrial panel lighting requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MP4032-2GS 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 MP4032 product line targets cost-sensitive, high-efficiency offline LED drivers for retrofit and new-build lighting, emphasizing integration (600V MOSFET, DRAIN charger), TRIAC compatibility, and boundary-mode efficiency.
FAQ
What is the minimum off-time limit for MP4032-2GS?
The MP4032-2GS enforces a fixed minimum off-time of 5.3µs (typical) to cap maximum switching frequency and reduce EMI. This value is internally trimmed and not user-adjustable; it operates across full temperature (-40°C to +125°C) and input voltage ranges.
How does the ZCD pin provide over-voltage protection?
The ZCD pin monitors auxiliary winding voltage proportional to output voltage. When ZCD voltage exceeds 5.30V after a 1.95µs blanking period post-turn-off, OVP latches, halting switching until VCC drops to 7.5V and auto-restart initiates-protecting LEDs and secondary components without external sensing.
Can MP4032-2GS operate without an auxiliary winding?
No. The auxiliary winding is mandatory: it powers VCC after startup, provides ZCD signal for zero-current detection, and enables OVP. Without it, the IC cannot sustain operation beyond initial DRAIN-charged startup and will enter hiccup mode due to VCC undervoltage.
What is the recommended MULT pin capacitor value?
A 4.7nF X7R ceramic capacitor is recommended between MULT and GND to suppress switching noise while minimizing phase shift. Values from 2.2nF to 8.2nF are acceptable; higher values improve dimming stability but degrade power factor due to increased line-voltage phase lag.
Does MP4032-2GS support trailing-edge (ELV) dimmers?
No. MP4032-2GS is designed exclusively for leading-edge (TRIAC) dimmers. Its MULT pin detection circuit and dimming algorithm are optimized for phase-cut waveforms with fast rise times; trailing-edge dimmer compatibility is not supported and may cause unstable dimming or no response.
What is the maximum allowable LED string voltage?
The maximum output voltage is determined by external circuit design-not the IC itself-but practical limits arise from ZCD OVP threshold (5.30V) and auxiliary winding turns ratio. With typical NAUX/NL = 1:10, VOUT_OVP ≈ 53V; exceeding this risks premature OVP triggering and output instability.
How is LED current set with MP4032-2GS?
LED current is set by the CS-sense resistor (Rs): ILED ≈ 0.403V / (2 × Rs). For example, Rs = 0.5Ω yields ~403mA. This relationship holds across line voltage, temperature, and dimming level due to real-current control and internal 0.403V reference voltage.
MP4032-2GS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width), 7 Leads
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- AC DC Offline Switcher
- Topology:
- Step-Down (Buck), Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 10.3V
- Voltage - Supply (Max):
- 27V
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- -
- Dimming:
- Triac
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC-7A
MP4032-2GS FAQ
1.How can I place an order for MP4032-2GS through Aetrix?
Please submit a Request for Quotation (RFQ) for MP4032-2GS 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 MP4032-2GS reliable?
The price and inventory of MP4032-2GS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP4032-2GS is usually 5 days.
3.What payment methods are accepted for MP4032-2GS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP4032-2GS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP4032-2GS?
MP4032-2GS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP4032-2GS 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 MP4032-2GS?
For technical support, including MP4032-2GS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP4032-2GS requirements.
6.How does Aetrix verify that MP4032-2GS is sourced from the original manufacturer or authorized distributors?
All MP4032-2GS 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 MP4032-2GS meets industry standards.
7.What is the process for return or replacement of MP4032-2GS?
All MP4032-2GS units undergo pre-shipment inspection (PSI). If there is an issue with MP4032-2GS, 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 MP4032-2GS part is unused and in its original packaging.
Return procedure for MP4032-2GS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MP4032-2GS Tags
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BCR420UE6433HTMA1
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