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Monolithic Power Systems Inc. MP4088GJ-Z
- Part No.:
- MP4088GJ-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- LED Drivers
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MP4088GJ-Z.pdf
- Description:
- IC LED DRVR OFFL TRIAC TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,698
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Product details
Overview
MP4088GJ-Z from Monolithic Power Systems is a non-isolated, TRIAC-dimmable LED driver IC with integrated 500V MOSFET, designed for 230VAC input and up to 10W LED loads. It delivers constant current regulation via internal averaging feedback, achieves >0.7 power factor, and supports buck/buck-boost topologies using only a single-winding inductor in residential A19/GU10 lamp designs.
For engineers reviewing the MP4088GJ-Z datasheet, MP4088GJ-Z pinout, MP4088GJ-Z application, or MP4088GJ-Z equivalent, key selection criteria include its hybrid dimming mode for flicker-free TRIAC compatibility, thermal foldback behavior at >145°C, programmable OVP via external resistors, and TSOT23-5 package suitability for compact retrofit lamps.
Technical Context
The MP4088GJ-Z implements a proprietary hybrid operation mode that dynamically switches between DCM and CCM across the AC half-cycle to maintain stable latching/holding current for reliable TRIAC triggering. Its internal high-voltage regulator draws current directly from HV pin to enable fast start-up without delay.
Current regulation relies on an internal CS comparator with 0.4V threshold and 20ns leading-edge blanking, while output voltage protection uses an OVF pin with 2.0V ±0.25V trigger threshold and 2–32μs response window. Thermal de-rating begins at 145°C and full shutdown occurs at 160°C with 50°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 198–265VAC - Validated for European mains; enables direct connection without transformer or bridge rectifier pre-filtering. |
| Output Power Capability | Up to 10W - Supports common A19/GU10/PAR30 lamp form factors with 50–55V output and 100mA current. |
| Power Factor | >0.7 - Meets EN61000-3-2 Class C harmonic limits for lighting equipment without active PFC stage. |
| Integrated MOSFET | 500V/8Ω - Eliminates external HV switch; rated for 230VAC peak (≈325V) with margin for surge transients. |
| Thermal Protection | 145°C de-rating / 160°C shutdown - Prevents LED current collapse and ensures flicker-free operation under enclosed fixture conditions. |
| OVP Threshold | 2.0V ±0.25V on OVF pin - Programmable max output voltage via resistor divider; protects LEDs during open-circuit fault. |
| Start-Up Current Source | 3.8–6.1mA from HV pin - Enables self-biasing from rectified line; eliminates auxiliary winding or startup resistor. |
Pinout & Package
MP4088GJ-Z is housed in a TSOT23-5 package (2.9 × 1.6 × 0.95 mm), optimized for space-constrained LED lamp PCBs. The exposed pad variant is not used in this suffix; thermal dissipation relies on copper pour under pins 1–5.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Internal regulator supply | Accepts 4.2–4.7V; powers control logic; internal HV regulator charges external 10μF capacitor during dimmer conduction. |
| OVF (Pin 2) | Over-voltage feedback input | Monitors scaled output voltage; triggers hiccup-mode shutdown if >2.0V for ≥2μs; sets max LED string voltage. |
| GND (Pin 3) | Signal and power reference | Common return for CS sense path, VCC decoupling, and internal regulator; must be low-impedance plane. |
| CS (Pin 4) | Current sense input | Compares inductor current via external shunt; 0.4V threshold with 20ns blanking to reject switching noise. |
| HV (Pin 5) | High-voltage input | Direct connection to rectified AC line (up to 500V); supplies start-up current and drives integrated MOSFET drain. |
Key Features
| Feature | Design Value |
|---|---|
| Hybrid dimming mode | Dynamically selects DCM/CCM per AC phase quadrant to sustain TRIAC latching current and eliminate pop-on/pop-off. |
| Single-winding inductor support | Enables buck or buck-boost topology with one magnetic component-reduces BOM count and board area by ≥30% vs. flyback. |
| Integrated 500V MOSFET | Eliminates external HV switch and gate driver; reduces layout complexity and EMI loop area in non-isolated designs. |
| Thermal foldback | Reduces LED current gradually above 145°C-prevents abrupt output drop and maintains usable light output in thermally stressed fixtures. |
| Programmable OVP | Configurable max output voltage via R2/R3 divider on OVF pin-enables safe operation across varying LED string counts (e.g., 12–17 LEDs). |
Applications
| Residential LED Lamps | Commercial Downlights |
|---|---|
|
Use Scenario: Retrofit A19 bulb replacing 60W incandescent in standard E26 socket with TRIAC wall dimmer. IC Role / Device Role / Timing Role: Constant-current LED driver regulating 100mA through 17-series white LEDs; manages phase-cut dimmer waveform synchronization. Use Value: Achieves >90% dimming range with no audible noise or visible flicker due to hybrid mode and 22kHz minimum switching frequency. |
Use Scenario: GU10 spotlight in office ceiling grid with leading-edge TRIAC dimmer and enclosed thermal environment. IC Role / Device Role / Timing Role: Non-isolated buck-boost driver delivering 55V/100mA; implements thermal foldback to maintain stable light output at 75°C ambient. Use Value: Prevents thermal runaway and color shift by reducing current 20% at 145°C junction-extends LED lifetime in confined fixtures. |
| Smart Lighting Modules | Dimmable PAR30 Lamps |
|
Use Scenario: Integrated driver + BLE module in connected bulb where space and EMI are constrained. IC Role / Device Role / Timing Role: Primary LED controller with minimal external components (1 inductor, 1 diode, 2 resistors); handles both AC dimming and DC bias from MCU. Use Value: TSOT23-5 footprint (2.9 × 1.6 mm) saves >40% PCB area vs. SOIC-8 alternatives-enables dual-layer design with antenna clearance. |
Use Scenario: Outdoor-rated PAR30 floodlight with aluminum heat sink and 230VAC input. IC Role / Device Role / Timing Role: High-PF (>0.7) driver supporting 10W load with surge immunity via integrated 500V MOSFET and RCD snubber interface. Use Value: Withstands 1kV line surges per IEC61000-4-5; eliminates need for external TVS-reduces failure rate in lightning-prone regions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TRIAC-dimmable LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP4078GJ-Z | Lacks integrated 500V MOSFET; requires external HV switch; lower BOM cost but higher layout complexity. | Suitable for designs needing <5W output or custom MOSFET selection; not recommended for 10W A19 lamps due to added losses. | Choose when optimizing for ultra-low unit cost and thermal management allows discrete HV FET placement. |
| BP57722D | Fixed 22kHz frequency; no hybrid dimming mode; lower PF (~0.65); no thermal foldback-only hard shutdown at 150°C. | Better suited for non-dimming or trailing-edge dimmer systems; fails abruptly above 150°C-unsuitable for enclosed fixtures. | Select only for cost-sensitive, non-enclosed applications where dimming performance and thermal resilience are secondary. |
Compared with MP4078GJ-Z and BP57722D, MP4088GJ-Z uniquely combines integrated 500V switching, hybrid dimming, and graded thermal foldback-making it the only option among the three validated for flicker-free, high-reliability 10W TRIAC-dimmable lamps in thermally constrained enclosures.
Availability
MP4088GJ-Z is available at Aetrix Electronics and suitable for residential LED retrofits, commercial downlights, and smart lighting modules requiring stable component supply, RoHS-compliant packaging, and long-term production continuity.
Supply support for MP4088GJ-Z 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 over 20 years of leadership in DC/DC converters, LED drivers, and motor drivers.
The MP4088 product line targets cost-sensitive, non-isolated AC/DC LED lighting applications-specifically engineered to replace magnetic transformers and linear regulators in 230VAC TRIAC-dimmable lamps.
FAQ
What is the maximum LED string voltage supported by MP4088GJ-Z?
The MP4088GJ-Z does not set a fixed maximum LED voltage; instead, it uses the OVF pin to monitor scaled output voltage. With a typical 100kΩ upper feedback resistor (R2) and 10kΩ lower resistor (R3), the maximum output is 55V (VOVP = 2.0V × (R2+R3)/R3). This supports 12–17 white LEDs in series depending on forward voltage tolerance.
Can MP4088GJ-Z operate with trailing-edge (ELV) dimmers?
No-MP4088GJ-Z is specifically optimized for leading-edge (TRIAC) dimmers. Its hybrid operation mode relies on detecting the sharp voltage rise at dimmer turn-on to synchronize switching. Trailing-edge dimmers lack this edge transition, causing unstable dimming or failure to start.
How does the thermal foldback function protect the system?
At junction temperatures above 145°C, the MP4088GJ-Z gradually reduces LED current to ~80% of nominal value. This prevents sudden light loss and thermal runaway while maintaining usable illumination. Full shutdown only occurs at 160°C, allowing recovery once temperature drops below 110°C.
Is an external startup resistor required for MP4088GJ-Z?
No-MP4088GJ-Z features an internal high-voltage current source (3.8–6.1mA) on the HV pin that charges the VCC capacitor directly from rectified AC. This eliminates the need for a high-voltage startup resistor, reducing component count and improving reliability.
What inductor value is recommended for a 10W, 55V/100mA design?
For 55V output and 100mA LED current, a 1.2mH inductor with ≤0.3Ω DCR is recommended. This value balances power factor (>0.7), EMI performance, and dimming smoothness. Inductor saturation current must exceed 350mA to avoid core saturation during peak line conditions.
Does MP4088GJ-Z support buck-boost topology in the TSOT23-5 package?
Yes-the TSOT23-5 variant fully supports both buck and buck-boost configurations as confirmed in the datasheet's Typical Application section. Layout guidelines emphasize minimizing the HV–CS–GND loop area to maintain stability in buck-boost mode at 230VAC input.
What is the minimum dimming level achievable with MP4088GJ-Z?
With compatible leading-edge dimmers, MP4088GJ-Z achieves ≥10% of full light output without flicker or pop-on artifacts. This is enabled by its hybrid mode's adaptive CCM/DCM switching, which sustains TRIAC holding current even at low conduction angles.
MP4088GJ-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- AC DC Offline Switcher
- Topology:
- Buck, Boost
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 4.5V
- Voltage - Supply (Max):
- 5V
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- 22kHz
- Dimming:
- Triac
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
MP4088GJ-Z FAQ
1.How can I place an order for MP4088GJ-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP4088GJ-Z 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 MP4088GJ-Z reliable?
The price and inventory of MP4088GJ-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP4088GJ-Z is usually 5 days.
3.What payment methods are accepted for MP4088GJ-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP4088GJ-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP4088GJ-Z?
MP4088GJ-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP4088GJ-Z 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 MP4088GJ-Z?
For technical support, including MP4088GJ-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP4088GJ-Z requirements.
6.How does Aetrix verify that MP4088GJ-Z is sourced from the original manufacturer or authorized distributors?
All MP4088GJ-Z 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 MP4088GJ-Z meets industry standards.
7.What is the process for return or replacement of MP4088GJ-Z?
All MP4088GJ-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP4088GJ-Z, 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 MP4088GJ-Z part is unused and in its original packaging.
Return procedure for MP4088GJ-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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