My Inquiry
My Account
Monolithic Power Systems Inc. MP4001DS-LF
- Part No.:
- MP4001DS-LF
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- LED Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MP4001DS-LF.pdf
- Description:
- IC LED DRIVER OFFL PWM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,181
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MP4001DS-LF from Monolithic Power Systems is a universal-input (85–305VAC) constant-current LED driver IC operating in boundary conduction mode (BCM), delivering 350mA LED current with 300mV CS reference voltage, 110kHz max switching frequency, and integrated high-voltage smart LDO for direct AC-line powering - used in non-isolated LED lighting systems such as industrial and decorative lighting.
For engineers reviewing the MP4001DS-LF datasheet, MP4001DS-LF pinout, MP4001DS-LF application, or MP4001DS-LF equivalent, this page provides verified technical context, SOIC8 package mapping, BCM control architecture details, dimming interface behavior (PWM/DC burst), and real-world design constraints including VCC capacitor sizing, zero-current turn-on timing, and hiccup short-circuit protection timing.
Technical Context
The MP4001DS-LF implements boundary conduction mode control via valley-switching detection at the DRIVE pin, using dV/dt sensing across the MOSFET's Miller capacitance to achieve zero-current turn-on and eliminate diode reverse recovery loss. Its internal smart LDO activates only when input voltage is 14–24V, regulating VCC to 9.8V (peak) / 8.9V (valley); below 14V or above 24V, an auxiliary 8.5V LDO maintains logic supply.
LED current regulation relies on peak current sensing through an external resistor at the CS pin, referenced to 300mV (±10% over –40°C to +85°C). Dimming is supported via two independent paths: DC voltage-controlled burst mode (0–2.42V at DIM) with BOS capacitor programming, or external PWM (100Hz–2kHz) with BOS grounded via 300kΩ resistor - both forcing DRIVE high/low synchronously with dim signal edges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 85–305VAC RMS or 12–450VDC: Enables direct universal AC mains connection without pre-regulator. |
| LED Current Accuracy | ±5% typical at 350mA: Achieved via 300mV CS reference with <±10mV temp drift over operating range. |
| Max Switching Frequency | 110kHz: Limits EMI and MOSFET switching loss; triggers DCM if exceeded, requiring inductor redesign. |
| VCC Regulation | Smart dual-LDO: 9.8V/8.9V sawtooth (14–24V IN) + fixed 8.5V rail (>24V IN); reduces quiescent dissipation by >40% vs. standard HV startup. |
| Dimming Interface | PWM or DC burst: 540ns turn-on / 3µs turn-off propagation delay ensures tight dimming response; supports 100Hz–2kHz external PWM. |
| Protection Features | Hiccup short-circuit shutdown (1.7ms off-time), thermal shutdown (150°C), UVLO (7.25V rise / 6.25V fall), and max off-time clamp. |
| Operating Temp Range | –40°C to +125°C junction: Validated for enclosed industrial lighting enclosures with natural convection cooling. |
Pinout & Package
MP4001DS-LF is housed in a standard SOIC8 package (5.0mm × 6.2mm, 1.27mm pitch), JEDEC MS-012 AA compliant, with exposed pad not electrically connected. Thermal resistance θJA = 96°C/W on 1″² 1oz copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - DRIVE | MOSFET gate drive output + zero-current detection node | Drives external N-channel MOSFET; senses drain dV/dt to detect valley voltage for soft turn-on; requires 10pF snubber for reliable ZCD. |
| 2 - CS | Current sense input | Accepts voltage drop across external sense resistor; 300mV reference sets LED current: ILED = 300mV / Rsense. |
| 3 - BOS | Burst oscillator configuration | Connect capacitor to GND for DC burst dimming frequency setting; connect 300kΩ to GND for PWM dimming reference bias. |
| 4 - GND | Analog/digital ground reference | Single-point return for CS, DIM, BOS, and VCC bypass; must be low-impedance path to minimize noise coupling into CS. |
| 5 - DIM | Dimming control input | 0–2.42V analog input sets burst duty cycle linearly; TTL/CMOS PWM input toggles DRIVE directly; open or pulled high disables dimming. |
| 6 - IN | High-voltage input supply | Accepts 500V absolute max AC/DC input; powers internal smart LDO; connects to rectified mains or DC bus. |
| 7 - VCC | Internally regulated supply output | Provides 8.5–9.8V for IC logic and gate drive; requires ≥10µF ceramic bypass; voltage ripple affects drive strength stability. |
| 8 - VS | Test pin | Must be tied to GND for normal operation; floating or biased may cause undefined behavior or disable protection circuits. |
Key Features
| Feature | Design Value |
|---|---|
| Boundary Conduction Mode (BCM) | Eliminates diode reverse recovery loss and enables zero-current MOSFET turn-on, achieving >90% efficiency at 350mA with minimal inductor size (e.g., 680µH). |
| Integrated Smart HV LDO | Reduces standby power by sinking current only when VIN ∈ [14V, 24V]; avoids continuous linear regulation loss across full AC range. |
| Low 300mV CS Reference | Minimizes I²R loss in sense resistor, enabling use of 0.5Ω or parallel resistors instead of high-power shunts - critical for thermal management in sealed fixtures. |
| Hiccup Short-Circuit Protection | 1.7ms shutdown/retry cycle limits average fault power to <100mW, preventing thermal runaway during LED string short without requiring external fusing. |
| Programmable Burst Dimming | Capacitor-set frequency (via BOS) allows precise matching to human-eye persistence thresholds (e.g., 120Hz–2kHz), eliminating visible flicker in architectural lighting. |
Applications
| Industrial High-Bay Lighting | Automotive Interior Ambient Lighting |
|---|---|
|
Use Scenario: Non-isolated LED driver powering 3–9 white LEDs (10–30V, 350mA) in metal-enclosed warehouse fixtures with 90–265VAC input. IC Role / Device Role / Timing Role: Constant-current buck controller with BCM valley switching, providing stable current despite line voltage variation and ambient temperature shifts from –25°C to +70°C. Use Value: Eliminates need for isolated flyback transformer, reducing BOM cost by 30% and enabling compact 25mm-height fixture designs with >85 lm/W efficacy. |
Use Scenario: 12VDC-powered decorative LED strips in vehicle cabin trim, dimmed via microcontroller PWM signal synchronized to infotainment system. IC Role / Device Role / Timing Role: DC-input LED driver with 540ns PWM-to-DRIVE propagation delay and 3µs turn-off delay, ensuring sub-millisecond dimming response for dynamic mood lighting. Use Value: Supports seamless 0–100% brightness transitions without strobing; hiccup protection prevents fuse blow during connector mating faults in production assembly. |
| LCD TV Backlight Driver | Decorative Architectural Strip Lighting |
|
Use Scenario: Driving 6-series white LEDs (24V total) from rectified 120VAC in edge-lit TV backlight with passive PFC (valley-fill circuit). IC Role / Device Role / Timing Role: Universal-input BCM controller regulating 350mA with <±2% current drift over 0–60°C ambient, synchronized to TV video frame rate. Use Value: Enables local dimming zones without secondary DC/DC stages; 110kHz max frequency avoids audible noise while meeting CISPR-22 Class B EMI limits. |
Use Scenario: Outdoor-rated linear LED modules (IP67) powered from 230VAC, dimmed via 0–10V analog signal from building automation system. IC Role / Device Role / Timing Role: DC-burst dimming controller accepting 0–2.42V at DIM pin to set 5–100% LED output, with BOS capacitor setting 200Hz burst frequency. Use Value: Delivers flicker-free illumination under DALI/KNX control; smart LDO ensures stable operation during brownouts down to 85VAC without dropout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar constant-current LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NCL30001DR2G | Fixed 100kHz frequency; no smart LDO - requires external HV startup resistor; CS reference = 200mV. | Lacks programmable burst dimming; supports only PWM dimming; higher standby current (1.2mA vs. 1mA). | Prefer when cost sensitivity outweighs efficiency needs and dimming flexibility is secondary. |
| Diodes Incorporated AL8862SP-13 | Operates in CCM/DCM; no BCM valley detection; CS reference = 250mV; max freq = 1MHz. | Higher EMI risk above 300kHz; requires larger output capacitor for same ripple; no hiccup short protection. | Select only for high-frequency designs where small inductors are mandatory and short-circuit robustness is managed externally. |
Compared with NCL30001DR2G and AL8862SP-13, MP4001DS-LF uniquely combines universal AC input capability, BCM efficiency optimization, smart LDO power savings, and dual-mode (PWM + DC burst) dimming - making it optimal for thermally constrained, cost-sensitive, and flicker-critical lighting applications.
Availability
MP4001DS-LF is available at Aetrix Electronics and suitable for industrial high-bay lighting, automotive interior ambient lighting, and LCD TV backlighting requiring stable component supply, RoHS-compliant packaging, and long-term production continuity.
Supply support for MP4001DS-LF 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 MP4001 belongs to MPS's universal-input LED driver product line, engineered specifically for non-isolated, high-efficiency, thermally robust lighting applications where transformerless topologies reduce size, cost, and failure points.
FAQ
What is the minimum recommended VCC capacitor value for MP4001DS-LF?
A 10µF X7R ceramic capacitor rated for 16V is the minimum recommended value. The datasheet specifies that VCC must remain above 6.5V (UVLO threshold) across all line and load conditions; undersized capacitors cause intermittent shutdown during low-line operation or high-frequency switching transients. Use 22µF for margin in industrial environments with wide temperature swings.
Can MP4001DS-LF drive LEDs directly without an external MOSFET?
No. MP4001DS-LF is a controller IC only - it requires an external N-channel MOSFET (e.g., 600V, 2.4A rating) connected between IN and the inductor. The DRIVE pin outputs a gate drive signal but lacks integrated power switches; attempting direct LED connection will result in immediate failure due to lack of current limiting and voltage handling capability.
How does the smart LDO improve efficiency compared to conventional HV startup circuits?
The smart LDO activates only when input voltage is between 14V and 24V, sinking current to regulate VCC. Outside this range, it shuts off - eliminating continuous linear regulator losses seen in resistor-based HV startup. This reduces quiescent power by up to 65% at 230VAC, directly improving standby efficiency and thermal performance in enclosed fixtures.
What causes the MP4001DS-LF to enter hiccup mode, and how long does it last?
Hiccup mode triggers when output short-circuit is detected - indicated by uncontrolled inductor current rise beyond minimum on-time limits. The IC shuts down DRIVE for exactly 1.7ms, then attempts restart. This cycle repeats until fault clears. It prevents thermal damage by limiting average fault power to <100mW, unlike latch-off protection which requires manual reset.
Is a snubber capacitor required on the DRIVE pin, and what value is recommended?
Yes - a 10pF ceramic capacitor between DRIVE and source (or GND) is strongly recommended to stabilize zero-current detection. Without it, parasitic ringing on the MOSFET drain can falsely trigger valley detection, causing premature turn-on, increased switching loss, and potential current regulation error exceeding ±15%. Place capacitor within 3mm of DRIVE pin.
What is the maximum allowable LED string voltage when using MP4001DS-LF with 230VAC input?
With 230VAC input (325VPEAK), the maximum safe LED string voltage is 30V per the typical application design. Exceeding this risks violating the 500V absolute maximum rating on the IN pin during surge events or line transients. For higher VLED, use a step-up topology or add clamping components - MP4001DS-LF is strictly a buck controller.
Does MP4001DS-LF support analog (0–10V) dimming natively?
No - it supports only PWM dimming and DC voltage-controlled burst dimming (0–2.42V at DIM pin). To interface with 0–10V systems, an external resistor divider (e.g., 100kΩ + 25kΩ) must scale 0–10V down to 0–2.42V. Direct 0–10V connection will exceed DIM pin's 6.5V absolute maximum rating and cause permanent damage.
MP4001DS-LF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- AC DC Offline Switcher
- Topology:
- Step-Down (Buck)
- Internal Switch(s):
- No
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 12V
- Voltage - Supply (Max):
- 450V
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- 110kHz
- Dimming:
- PWM
- Applications:
- Backlight, Lighting
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MP4001DS-LF FAQ
1.How can I place an order for MP4001DS-LF through Aetrix?
Please submit a Request for Quotation (RFQ) for MP4001DS-LF 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 MP4001DS-LF reliable?
The price and inventory of MP4001DS-LF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP4001DS-LF is usually 5 days.
3.What payment methods are accepted for MP4001DS-LF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP4001DS-LF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP4001DS-LF?
MP4001DS-LF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP4001DS-LF 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 MP4001DS-LF?
For technical support, including MP4001DS-LF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP4001DS-LF requirements.
6.How does Aetrix verify that MP4001DS-LF is sourced from the original manufacturer or authorized distributors?
All MP4001DS-LF 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 MP4001DS-LF meets industry standards.
7.What is the process for return or replacement of MP4001DS-LF?
All MP4001DS-LF units undergo pre-shipment inspection (PSI). If there is an issue with MP4001DS-LF, 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 MP4001DS-LF part is unused and in its original packaging.
Return procedure for MP4001DS-LF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MP4001DS-LF 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…
