My Inquiry
My Account
Monolithic Power Systems Inc. MP2488DN-LF-P
- Part No.:
- MP2488DN-LF-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- LED Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
MP2488DN-LF-P.pdf
- Description:
- 55V INPUT, 2A, HIGH POWER BUCK L
- Quantity:
- Payment:
- Shipping:
Inventory:4,783
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MP2488DN-LF-P from Monolithic Power Systems is a fixed-frequency, peak-current-mode step-down LED driver IC integrating a 220mΩ high-side 55V MOSFET and delivering up to 2A constant current to high-power LED strings. It operates from 4.5V–55V input, features 200mV reference for precise current regulation, programmable 150–250kHz switching frequency via external resistor, and 130μA quiescent current-enabling use in automotive headlamp and industrial high-bay lighting systems.
For engineers reviewing the MP2488DN-LF-P datasheet, MP2488DN-LF-P pinout, MP2488DN-LF-P application, or MP2488DN-LF-P equivalent, key selection criteria include its SOIC8E exposed-pad thermal performance (θJA = 50°C/W), 3.2A internal current limit, EN pin with 1.5V rising threshold, BST bootstrap voltage regulation, and compatibility with ceramic output capacitors for EMI-sensitive lighting designs.
Technical Context
The MP2488DN-LF-P implements peak-current-mode control with a 200mV FB reference and internal error amplifier (AVEA = 400V/V, GEA = 350μA/V) to regulate LED current via external RFB. Its oscillator frequency is set by RFREQ to ground, supporting 150–250kHz operation to avoid AM radio band interference.
It integrates a floating high-side gate driver powered by a dedicated bootstrap regulator (BST–SW ≈ 4V), with UVLO (2.2V rising) and soft-start (0.18ms ramp). Thermal shutdown activates at 150°C with 20°C hysteresis, and EN pin enables/disables the IC with 300mV hysteresis and internal 1μA pull-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 55V - supports 12V/24V/48V automotive and industrial bus rails without pre-regulation. |
| Max Output Current | 2A constant current - sufficient for multi-LED strings up to 10× WLEDs at 330mA or single high-power emitters. |
| Switching Frequency | 150–250kHz (typ. 200kHz) - programmable via RFREQ; avoids EMI-sensitive 100–150kHz bands while enabling compact magnetics. |
| Internal MOSFET RDS(ON) | 220mΩ - reduces conduction loss at 2A, enabling >97% efficiency at 44V input / 10W LED load. |
| Feedback Reference | 200mV ±12mV - enables accurate current sensing with low-value RFB (e.g., 287mΩ for 700mA), minimizing power loss. |
| Quiescent Current | 130μA - allows battery-backed emergency lighting operation with minimal standby drain. |
| Thermal Shutdown | 150°C activation - protects against sustained overload or poor heatsinking in enclosed luminaires. |
Pinout & Package
MP2488DN-LF-P uses an SOIC8 with exposed thermal pad (SOIC8E), providing 2.5W continuous power dissipation at TA = +25°C and θJC = 10°C/W for direct PCB copper thermal coupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Switch Node | High-side MOSFET drain output; connects to cathode of Schottky rectifier and inductor; requires low-inductance layout to suppress ringing. |
| 2 EN | Enable Input | Positive-logic enable with 1.5V rising threshold; internal 1μA pull-up allows floating-enable; 1μA sink capability required for disable. |
| 3 COMP | Error Amplifier Output | Drives external RC compensation network (RCOM/CCOM1/CCOM2); clamped 0.9V–2.0V; pulled to GND in shutdown. |
| 4 FB | Current Sense Input | Compares RFB voltage to 200mV reference; sets LED current as ILED = 200mV / RFB; high-impedance node requiring short trace routing. |
| 5 GND | Power & Signal Ground | Primary return path; exposed pad must be soldered to large GND plane for thermal and EMI performance. |
| 6 FREQ | Oscillator Programming | Connects external RFREQ to GND; sets fSW = 100000 / (RFREQ(kΩ) + 5) kHz; add 1nF CFREQ for noise immunity. |
| 7 VIN | Main Supply Input | Powers internal regulators and gate driver; requires local 10μF ceramic decoupling capacitor placed adjacent to pin. |
| 8 BST | Bootstrap Supply | Charged to ~4V above SW via internal PMOS; supplies floating high-side driver; needs 100nF CBST between BST and SW. |
Key Features
| Feature | Design Value |
|---|---|
| Ceramic capacitor stable | Supports low-ESR ceramic COUT (2.2–4.7μF) without oscillation-reducing size, cost, and aging vs. electrolytics. |
| Internal soft-start | 0.18ms controlled ramp prevents LED current overshoot during startup and short-circuit recovery. |
| Peak-current-mode control | Enables fast transient response to LED string voltage changes and simplifies loop compensation design. |
| Exposed thermal pad | SOIC8E package delivers 2.5W power handling and 10°C/W junction-to-case resistance for reliable thermal management. |
| Low shutdown current | 12–25μA shutdown supply current enables integration into always-on vehicle lighting modules with minimal battery drain. |
Applications
| Automotive Headlamps | Industrial High-Bay Lighting |
|---|---|
Use Scenario: Driving 4–8 high-power white LEDs in adaptive front-lighting systems (AFS) with PWM dimming. IC Role / Device Role / Timing Role: Constant-current buck controller regulating LED string current independent of forward voltage drift across temperature. Use Value: 2A output and 55V input withstand 80V load-dump transients; 200kHz switching avoids audible noise and meets CISPR-25 Class 5 EMI limits. | Use Scenario: Powering 12–24 LED modules in warehouse ceiling fixtures operating from 24–48V DC distribution rails. IC Role / Device Role / Timing Role: Primary LED current regulator in isolated or non-isolated constant-current drivers with analog/PWM dimming interface. Use Value: 4.5V–55V range accommodates wide-input industrial PSUs; exposed pad ensures thermal reliability at 65°C ambient in enclosed fixtures. |
| Streetlight LED Drivers | UV-C Disinfection Modules |
Use Scenario: Single-chip solution for 30–50W LED streetlights using 10–15 series-connected LEDs driven from 36–56V solar/battery systems. IC Role / Device Role / Timing Role: Step-down constant-current source with programmable frequency to optimize efficiency across varying PV input voltage. Use Value: 97.5% peak efficiency minimizes thermal stress in sealed outdoor enclosures; UVLO prevents operation below 3.0V battery cutoff. | Use Scenario: Driving high-voltage UV-C LED arrays (e.g., 36V Vf @ 700mA) in portable sterilization wands and HVAC duct modules. IC Role / Device Role / Timing Role: High-efficiency buck controller delivering precise current to narrow-Vf, temperature-sensitive UV-C diodes. Use Value: 200mV reference enables <1% current tolerance over temperature; 130μA quiescent current extends battery life in handheld units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-power LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ2488DN-AEC1-LF-Z | AEC-Q100 Grade 1 qualified; identical electrical specs but extended temp range (–40°C to +125°C) and automotive-grade screening. | Required for under-hood or headlamp applications where junction temperature exceeds +85°C ambient. | Select when automotive qualification or higher TJ(max) = +125°C is mandated; same PCB footprint and BOM. |
| LM3409QMYX/NOPB | Adjustable 200mV reference; no integrated MOSFET (external N-channel required); 1.25MHz max fSW; higher IQ (1.5mA). | Suitable for ultra-compact designs needing >1MHz switching or discrete MOSFET optimization for >3A loads. | Choose only if system requires >1MHz fSW or discrete FET selection; adds complexity and board area vs. MP2488DN-LF-P's integrated solution. |
Compared with MPQ2488DN-AEC1-LF-Z, the MP2488DN-LF-P offers identical functionality at lower cost and qualification level, while LM3409QMYX/NOPB trades integration for flexibility-requiring external FET, gate driver, and compensation but enabling higher-frequency or higher-current scaling.
Availability
MP2488DN-LF-P is available at Aetrix Electronics and suitable for automotive lighting, industrial high-bay fixtures, outdoor streetlight drivers, and UV-C disinfection modules requiring stable component supply across long production lifecycles.
Supply support for MP2488DN-LF-P 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 core expertise in DC/DC conversion, LED drivers, and motor control solutions.
The MP2488 product line targets high-efficiency, high-voltage constant-current LED driving for automotive, industrial, and architectural lighting-designed to replace discrete buck controllers with integrated MOSFETs and robust thermal protection.
FAQ
What is the maximum LED string voltage supported by MP2488DN-LF-P?
The MP2488DN-LF-P does not regulate output voltage directly-it regulates current through the LED string. The maximum achievable string voltage equals VIN minus the forward drop across the Schottky diode and inductor DCR, limited by the 55V absolute maximum VIN rating and 60V SW pin rating. For safe operation, keep VOUT ≤ VIN – 2V at full load.
Can MP2488DN-LF-P drive multiple parallel LED strings?
No-MP2488DN-LF-P is designed for single-string constant-current operation. Driving parallel strings without individual current regulation causes mismatch due to Vf variation, leading to thermal runaway. Use separate MP2488DN-LF-P channels or a multi-channel IC like MP4688 for parallel strings.
How is the switching frequency set, and what resistor value gives 200kHz?
Frequency is set by RFREQ from FREQ pin to GND using fS(kHz) = 100000 / (RFREQ(kΩ) + 5). For 200kHz, RFREQ = 495kΩ. A 1nF CFREQ capacitor must be placed in parallel with RFREQ to filter noise and stabilize the oscillator.
What thermal design considerations apply to the SOIC8E package?
The SOIC8E's exposed pad must be soldered to a minimum 100mm² copper pour connected to inner-layer GND planes via ≥4 thermal vias (0.3mm diameter). With this layout, θJA drops from 50°C/W to ~35°C/W, allowing 2A operation at TA = +70°C without forced air.
Does MP2488DN-LF-P support analog dimming via the COMP pin?
Yes-applying a DC voltage (0.9V–2.0V) to COMP overrides the internal error amplifier and directly controls peak switch current, enabling analog dimming. However, this bypasses feedback regulation; for closed-loop dimming, use PWM on the EN pin or external current-sense modulation.
What failure protections are built into MP2488DN-LF-P?
MP2488DN-LF-P includes thermal shutdown (150°C activation), input UVLO (3.0V rising / 2.6V falling), BST UVLO (2.2V), cycle-by-cycle current limiting (3.2A), and internal soft-start. It lacks open-LED or short-LED fault reporting-external circuitry is needed for fault diagnostics.
MP2488DN-LF-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- MP
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- Step-Down (Buck)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 4.5V
- Voltage - Supply (Max):
- 55V
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- 200kHz
- Dimming:
- PWM
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC-EP
MP2488DN-LF-P FAQ
1.How can I place an order for MP2488DN-LF-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2488DN-LF-P 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 MP2488DN-LF-P reliable?
The price and inventory of MP2488DN-LF-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2488DN-LF-P is usually 5 days.
3.What payment methods are accepted for MP2488DN-LF-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2488DN-LF-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2488DN-LF-P?
MP2488DN-LF-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2488DN-LF-P 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 MP2488DN-LF-P?
For technical support, including MP2488DN-LF-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2488DN-LF-P requirements.
6.How does Aetrix verify that MP2488DN-LF-P is sourced from the original manufacturer or authorized distributors?
All MP2488DN-LF-P 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 MP2488DN-LF-P meets industry standards.
7.What is the process for return or replacement of MP2488DN-LF-P?
All MP2488DN-LF-P units undergo pre-shipment inspection (PSI). If there is an issue with MP2488DN-LF-P, 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 MP2488DN-LF-P part is unused and in its original packaging.
Return procedure for MP2488DN-LF-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MP2488DN-LF-P Tags
-
BCR402RE6327HTSA1
Infineon Technologies
-
BCR430UXTSA2
Infineon Technologies
-
BCR420UE6433HTMA1
Infineon Technologies
-
BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
Tech Hub
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
