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Monolithic Power Systems Inc. MP6002DN-LF
- Part No.:
- MP6002DN-LF
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
MP6002DN-LF.pdf
- Description:
- IC REG BST FLYBACK ADJ 4A 8SOICE
- Quantity:
- Payment:
- Shipping:
Inventory:1,927
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Product details
Overview
MP6002DN-LF from Monolithic Power Systems is a monolithic flyback/forward DC-DC controller IC integrating a 150V/0.45Ω N-channel MOSFET, supporting up to 30W output power, fixed-frequency peak-current-mode control, and direct optocoupler feedback for isolated designs. It operates across 10V–100V input, delivers regulated 5V@3A in telecom PoE applications, and features cycle-by-cycle current limiting and auto-restart protection.
For engineers reviewing the MP6002DN-LF datasheet, MP6002DN-LF pinout, MP6002DN-LF application, or MP6002DN-LF equivalent, key selection criteria include its 150V integrated switch rating, programmable 55–550 kHz switching frequency via RT resistor, zero-load regulation capability, thermal shutdown at 150°C, and SOIC8E package with exposed thermal pad for telecom-grade power conversion.
Technical Context
The MP6002DN-LF implements a fixed-frequency, peak-current-mode PWM architecture with internal slope compensation and line feed-forward duty-cycle limiting-reducing magnetic saturation risk at high input voltage. Its functional block includes an error amplifier (1.21V reference), programmable oscillator, soft-start timer, and hiccup-mode overcurrent protection triggered by FB UV threshold.
It supports three primary topologies: flyback (isolated), forward (isolated), and non-isolated boost/SEPIC via external component reconfiguration. The LINE pin enables both input UV/OV monitoring (1.21V/3.0V thresholds) and remote enable/disable functionality, while the COMP pin provides direct access to the error amplifier output for custom compensation networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Integrated Switch | 150V rated N-MOSFET with 0.45Ω RDS(on) - enables single-chip 30W flyback without external HV FET |
| Switching Frequency | 55–550 kHz, set by RT resistor - allows trade-off between transformer size and conduction/switching losses |
| Feedback Reference | 1.21V ±5% internal bandgap - sets output regulation accuracy for optocoupler or primary-side feedback |
| Current Limit Threshold | 4A typical cycle-by-cycle limit - protects internal switch during overload or short-circuit conditions |
| Thermal Shutdown | 150°C junction temperature with 30°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking |
| Startup Circuit | 100V integrated high-voltage startup - eliminates external bias winding requirement for initial VCC charging |
| Line Monitoring | UVLO at 1.21V (≈10V input), OVLO at 3.0V (≈75V input) on LINE pin - ensures safe operation across 36–72V telecom range |
Pinout & Package
MP6002DN-LF is housed in a thermally enhanced SOIC-8 with exposed pad (SOIC8E), optimized for high-power density and PCB-level heat dissipation (θJA = 50°C/W on 4-layer board).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Power return and signal reference node - must connect to low-impedance ground plane under exposed pad |
| 2 | LINE | UV/OV monitor input - voltage divider from VIN sets enable/disable thresholds; grounding disables controller |
| 3 | FB | Inverting input of error amplifier - connected to optocoupler cathode or resistive divider to regulate output voltage |
| 4 | COMP | Error amplifier output - connects to RC compensation network for loop stability in isolated configurations |
| 5 | RT | Oscillator timing/sync input - resistor to GND sets frequency; AC-coupled external clock enables synchronization |
| 6 | VCC | Bias supply input - requires ≥1µF capacitor to GND; clamped at 8V internally; powered by VIN startup or auxiliary winding |
| 7 | VIN | High-voltage startup supply - sources initial current to charge VCC until regulation; must exceed 10V for reliable start |
| 8 | SW | Drain of internal 150V MOSFET - connects directly to primary winding; carries full switching current and voltage stress |
Key Features
| Feature | Design Value |
|---|---|
| Direct optocoupler interface | Bypasses internal error amplifier for precise secondary-side regulation without compensation redesign |
| Zero-load regulation | Active cycle-skipping mode maintains ±5% output accuracy at no load - critical for always-on telecom systems |
| Duty-cycle limiting with line feed-forward | Reduces max duty cycle from 67.5% to ~58% as input rises - prevents transformer saturation at 72V input |
| Hiccup-mode short-circuit protection | 15-cycle VCC ramp lockout followed by soft-start recovery - limits average input current to <100mA during fault |
| Internal soft-start | Programmable 1–10ms ramp via external capacitor on COMP - eliminates inrush current and output overshoot |
Applications
| Telecom Power Supply | Power over Ethernet (PoE) PSE |
|---|---|
|
Use Scenario: 48V input DC-DC conversion in central office line cards delivering 5V/3A to downstream circuitry. IC Role / Device Role / Timing Role: Primary-side flyback controller managing isolation, regulation, and protection in 30W isolated power stage. Use Value: Integrated 150V switch eliminates external HV FET, reducing BOM count and layout area while maintaining 85% efficiency at full load. |
Use Scenario: Midspan PoE injector supplying 57V DC to IEEE 802.3af/at endpoints with local 5V logic rail generation. IC Role / Device Role / Timing Role: Forward converter controller regulating auxiliary 5V rail from PoE-derived 57V bus with fast transient response. Use Value: Line feed-forward duty limiting ensures stable operation across PoE's 44–57V input range without transformer derating. |
| VoIP Phone Power | Industrial Isolated Auxiliary Supply |
|
Use Scenario: Single-board VoIP phone deriving 3.3V/2A and 5V/1A rails from 48V phantom power. IC Role / Device Role / Timing Role: Dual-output flyback controller using optocoupler feedback for tight cross-regulation between outputs. Use Value: Zero-load regulation maintains 5V rail within spec during standby (≤100µA quiescent), extending battery backup time. |
Use Scenario: Isolated 24V-to-5V/2A auxiliary supply in PLC backplane modules requiring reinforced insulation. IC Role / Device Role / Timing Role: Flyback controller implementing creepage/clearance-compliant transformer design with internal switch. Use Value: Thermal shutdown + auto-restart enables safe operation in sealed enclosures without forced airflow or heatsinks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flyback/forward controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC28740DR | 65V max switch voltage, no integrated FET - requires external 150V MOSFET; higher light-load efficiency via DCM | Best suited for cost-sensitive, lower-power (<15W) designs where BOM flexibility outweighs integration benefit | Select when needing >90% efficiency at 10% load or designing for variable output voltage via DAC-controlled FB |
| LNK364PG | 725V integrated switch, 12W max output, primary-side sensing only - no optocoupler support or RT programming | Ideal for ultra-low-cost, non-isolated or basic isolated supplies where regulation tolerance >±10% is acceptable | Choose for universal-input AC/DC adapters below 12W where safety certification simplicity is prioritized over precision |
Compared with UCC28740DR and LNK364PG, MP6002DN-LF uniquely balances 30W capability, 150V integration, and optocoupler-ready control-making it optimal for telecom-grade isolated DC-DC where board space, thermal performance, and tight regulation are jointly constrained.
Availability
MP6002DN-LF is available at Aetrix Electronics and suitable for telecom power supplies, Power over Ethernet injectors, VoIP terminal power, and industrial isolated auxiliary supplies requiring stable component supply, long-lifecycle assurance, and RoHS-compliant packaging.
Supply support for MP6002DN-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 design centers in the US, China, and Taiwan, and global manufacturing partnerships.
The MP6002 belongs to MPS's high-voltage DC-DC controller product line, engineered specifically for compact, efficient, and robust isolated power conversion in telecom infrastructure and enterprise networking equipment.
FAQ
What is the maximum recommended input voltage for continuous operation?
The MP6002DN-LF supports continuous operation up to 100V input per Absolute Maximum Ratings, but Recommended Operating Conditions specify +10V to +100V. For telecom 36–72V systems, the internal 150V switch provides 2× voltage margin against transients; operation above 75V requires verification of transformer turns ratio and snubber design to limit VDS spikes below 150V.
Can MP6002DN-LF be used in non-isolated boost configuration?
Yes-the MP6002DN-LF datasheet explicitly validates boost operation (Figure 8). In this mode, SW drives the boost inductor, FB regulates output via resistive divider, and LINE remains unconnected or tied to GND for enable. Output voltage is limited by internal switch rating (150V) and external diode selection; 48V→180V boost is feasible with appropriate 200V Schottky diode and gate drive optimization.
How does the LINE pin function in UVLO/OVLO versus remote enable modes?
When configured as UVLO/OVLO, two external resistors form a divider from VIN to GND, feeding the LINE pin; thresholds are 1.21V (UVLO) and 3.0V (OVLO). As remote enable, the LINE pin is pulled to GND to disable the controller or left open/floating to enable-no resistor divider needed. Both functions share the same pin but are mutually exclusive in implementation.
What is the minimum recommended VCC bypass capacitance?
A minimum 1µF ceramic capacitor is required between VCC and GND per datasheet Section "High Voltage Startup". This stabilizes bias voltage during startup and light-load operation. For improved ripple rejection and EMI performance, a parallel 10µF tantalum or aluminum polymer capacitor is recommended-especially when VCC is sourced from an auxiliary winding rather than VIN.
Does MP6002DN-LF support synchronous rectification?
No-the MP6002DN-LF does not provide dedicated gate drive outputs for synchronous rectifiers. It is designed for use with external Schottky or fast-recovery diodes on the secondary side. Synchronous rectification requires separate controller ICs (e.g., MP6908) or discrete MOSFET drivers timed to the primary switch waveform.
How is zero-load regulation achieved without auxiliary winding?
Zero-load regulation is maintained through automatic cycle-skipping: when output current drops near zero, the controller reduces switching frequency dynamically while preserving regulation via FB feedback loop. This avoids burst-mode noise and maintains <±5% output accuracy at no load-enabled by internal comparator hysteresis and COMP pin dynamics, independent of auxiliary winding presence.
What thermal derating applies above +85°C ambient?
With θJA = 50°C/W, the device reaches 150°C junction at 85°C ambient with only 1.3W dissipation (PD = (150−85)/50). Derating begins immediately above 25°C ambient; at 85°C, maximum continuous power drops to 1.3W. For 30W operation, active cooling or reduced load is required above 60°C ambient unless using enhanced heatsinking (e.g., 2oz copper + thermal vias under exposed pad).
MP6002DN-LF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Up, Step-Up/Step-Down
- Output Configuration:
- Positive or Negative, Isolation Capable
- Topology:
- Boost, Flyback, Forward Converter, SEPIC
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 10V
- Voltage - Input (Max):
- 100V
- Voltage - Output (Min/Fixed):
- -0.5V
- Voltage - Output (Max):
- 150V
- Current - Output:
- 4A (Switch)
- Frequency - Switching:
- 200kHz ~ 500kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOICE
MP6002DN-LF FAQ
1.How can I place an order for MP6002DN-LF through Aetrix?
Please submit a Request for Quotation (RFQ) for MP6002DN-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 MP6002DN-LF reliable?
The price and inventory of MP6002DN-LF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP6002DN-LF is usually 5 days.
3.What payment methods are accepted for MP6002DN-LF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP6002DN-LF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP6002DN-LF?
MP6002DN-LF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP6002DN-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 MP6002DN-LF?
For technical support, including MP6002DN-LF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP6002DN-LF requirements.
6.How does Aetrix verify that MP6002DN-LF is sourced from the original manufacturer or authorized distributors?
All MP6002DN-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 MP6002DN-LF meets industry standards.
7.What is the process for return or replacement of MP6002DN-LF?
All MP6002DN-LF units undergo pre-shipment inspection (PSI). If there is an issue with MP6002DN-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 MP6002DN-LF part is unused and in its original packaging.
Return procedure for MP6002DN-LF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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