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Monolithic Power Systems Inc. MP6001DN-LF-P
- Part No.:
- MP6001DN-LF-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
MP6001DN-LF-P.pdf
- Description:
- IC REG FLYBACK ADJ 8SOICE
- Quantity:
- Payment:
- Shipping:
Inventory:3,814
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Product details
Overview
MP6001DN-LF-P from Monolithic Power Systems is a monolithic flyback/forward DC-DC controller IC integrating a 150V, 0.9Ω N-channel power MOSFET, supporting up to 15W output power with fixed-frequency peak-current-mode control, programmable switching frequency (55–550 kHz), and direct optocoupler interface for isolated regulation in telecom-grade 36–72V input systems.
For engineers reviewing the MP6001DN-LF-P datasheet, MP6001DN-LF-P pinout, MP6001DN-LF-P application, or MP6001DN-LF-P equivalent, this device is selected for high-voltage primary-side regulation in PoE-powered VoIP phones, telecom distributed supplies, and isolated 5V@3A flyback converters requiring cycle-by-cycle current limiting, auto-restart protection, and zero-load regulation.
Technical Context
The MP6001DN-LF-P implements a fixed-frequency, peak-current-mode PWM architecture with internal slope compensation and line feed-forward duty-cycle limiting-reducing maximum duty cycle from 67.5% at 1.3V LINE pin voltage down to ~45% at 3V to prevent transformer saturation under high-line conditions.
It features a 100V high-voltage startup circuit sourcing bias from VIN to charge VCC, enabling operation from 10–100V input while maintaining VCC regulation between 4.5V and 6.0V via internal clamping and reconnection logic; the LINE pin serves dual function as UV/OV monitor (1.16–3.15V window) and remote enable/disable control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Integrated Switch | 150V, 0.9Ω N-MOSFET-supports direct primary-side switching without external HV FET in ≤15W flyback/forward designs. |
| Switching Frequency | 55–550 kHz via RT resistor-enables optimization of transformer size vs. conduction/switching loss trade-off. |
| Feedback Reference | 1.21V ±5% internal reference-sets output regulation accuracy for FB-based closed-loop control. |
| Protection Features | Line UVLO (1.21V), OVLO (3.0V), thermal shutdown (150°C), hiccup-mode short-circuit recovery-ensures robust fault handling without external circuitry. |
| Zero-Load Regulation | Cycle-skipping mode-maintains stable 5V output at no load without auxiliary winding or post-regulator. |
| Startup Voltage Range | 10–100V on VIN pin-enables direct high-voltage startup from telecom -48V or PoE PSE outputs without pre-bias. |
| Package Thermal Resistance | θJA = 50°C/W (SOIC8E with exposed pad)-supports 2.5W continuous dissipation at +25°C ambient. |
Pinout & Package
MP6001DN-LF-P is housed in a thermally enhanced SOIC8E (exposed pad) package, optimized for high-power density and PCB heat sinking in telecom power modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Power return and reference node | Primary ground reference for all internal circuits and external feedback network; connects to exposed pad for thermal conduction. |
| 2 LINE | UV/OV detection and enable input | Monitors input voltage via resistor divider; grounding disables controller; 1.21V–3.0V window enables operation and provides line feed-forward duty limiting. |
| 3 FB | Inverting input of error amplifier | Accepts optocoupler or resistive divider feedback; internal 1.21V reference sets output regulation point. |
| 4 COMP | Error amplifier output | Drives external compensation network; source/sink capability supports Type II compensation for stable isolated loop design. |
| 5 RT | Oscillator timing and sync input | Resistor-to-GND sets frequency; accepts external clock > fINT for synchronization in multi-rail systems. |
| 6 VCC | Bias supply input | Requires ≥1µF capacitor; regulated internally between 4.5V–6.0V; powered initially from VIN via 100V startup circuit. |
| 7 VIN | High-voltage startup supply | Sources initial VCC charge current; must exceed 10V for reliable startup; clamped at 8V internally. |
| 8 SW | Switching node output | Drain of integrated 150V MOSFET; connects directly to transformer primary; handles peak currents up to 2A. |
Key Features
| Feature | Design Value |
|---|---|
| Direct optocoupler interface | Bypasses internal error amplifier-enables precise secondary-side regulation without compensation redesign when using TL431 + PC357. |
| Programmable frequency with sync capability | RT resistor sets 55–550 kHz range; RT pin accepts external clock pulses (50–150 ns width, >3.5V) for system-level timing coordination. |
| Duty-cycle limiting with line feed-forward | Reduces DMAX from 67.5% to ~45% as LINE voltage rises-prevents core saturation and improves transient response across 36–72V input range. |
| Auto-restart after open/shorted output | After 15 VCC ramp cycles (4.5V→6.0V), initiates soft-start-avoids latch-up during sustained fault conditions in unattended telecom equipment. |
| Integrated 100V startup circuit | Eliminates external high-voltage start-up resistor network-reduces BOM count and board space in PoE and central-office power supplies. |
Applications
| VoIP Phone Power Supply | Power over Ethernet (PoE) Midspan |
|---|---|
|
Use Scenario: Isolated 5V/3A output from 36–72V PoE input in IP desk phones with low standby power requirement. IC Role / Device Role / Timing Role: Primary-side flyback controller managing transformer drive, regulation, and protection without secondary-side sensing. Use Value: Cycle-skipping enables <100mW no-load consumption; integrated 150V switch eliminates external HV FET, reducing solution size by 35% vs. discrete controllers. |
Use Scenario: Distributed 5V rail generation in PoE midspan switches powering multiple endpoints. IC Role / Device Role / Timing Role: Fixed-frequency current-mode controller synchronizing to system clock via RT pin for EMI reduction across parallel channels. Use Value: Programmable frequency (200–300 kHz typical) allows transformer optimization for 15W/channel; thermal shutdown prevents field failures in enclosed chassis. |
| Telecom Line Card DC-DC | Industrial Isolated Auxiliary Supply |
|
Use Scenario: 5V/2A isolated auxiliary supply on telecom line cards fed from -48V backplane. IC Role / Device Role / Timing Role: Forward converter controller regulating output via optocoupler feedback with fast transient response to burst traffic loads. Use Value: Line feed-forward duty limiting maintains stable operation across -36V to -72V input variation; auto-restart recovers from cable disconnect faults. |
Use Scenario: Compact 12V/1A isolated supply for PLC I/O modules operating from 24–48V industrial bus. IC Role / Device Role / Timing Role: Flyback controller with integrated 150V switch enabling single-chip solution without external HV gate driver or bootstrap circuitry. Use Value: SOIC8E exposed pad dissipates heat directly into PCB-achieves 85°C ambient operation without heatsink in space-constrained enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flyback/forward controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC28C43DR | 80V max switch, no integrated MOSFET, requires external HV FET and startup circuit | Needs additional components for 72V input; lacks cycle-skipping for zero-load regulation | Preferred only where lower cost outweighs BOM simplification and efficiency at light load |
| LNK364PG | Off-line flyback switcher with 700V integrated MOSFET, no programmable frequency or sync input | Designed for universal AC input; unsuitable for 36–72V DC telecom inputs without derating | Only viable if AC/DC conversion is required and DC input range exceeds 100V |
Compared with UCC28C43DR and LNK364PG, MP6001DN-LF-P delivers higher integration (150V FET + startup + sync), superior light-load efficiency via cycle-skipping, and precise line feed-forward for telecom DC input stability-making it optimal for PoE and -48V systems where component count and no-load power are critical.
Availability
MP6001DN-LF-P is available at Aetrix Electronics and suitable for telecom infrastructure, Power over Ethernet (PoE) endpoint devices, VoIP phone power supplies, and industrial isolated auxiliary rails requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MP6001DN-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 focus on energy-efficient DC-DC conversion, motor drivers, and LED lighting solutions.
The MP6001 belongs to MPS's monolithic flyback/forward controller product line, designed specifically for compact, high-reliability isolated DC-DC conversion in telecom, enterprise networking, and industrial power applications.
FAQ
What is the maximum recommended input voltage for MP6001DN-LF-P?
The absolute maximum rating for VIN is +100V, but the recommended operating range is +10V to +100V. For reliable startup and thermal performance in telecom applications, the practical upper limit is +72V-matching standard PoE and -48V telecom rectified rails. Exceeding +72V risks exceeding safe operating area during transients despite the 100V rating.
Can MP6001DN-LF-P be used in boost topology?
Yes-the MP6001DN-LF-P supports boost configuration per Figure 8 in the datasheet. It uses the same current-mode control and protection features, but requires external high-voltage diode (e.g., 200V/1A) and careful layout to manage SW node ringing. Output voltage is limited by the 150V switch rating and external component selection.
How does the LINE pin function beyond UV/OV detection?
The LINE pin serves three roles: (1) UVLO/OVLO threshold detection via resistor divider, (2) line feed-forward for duty-cycle limiting (reducing DMAX as voltage rises), and (3) remote enable/disable-grounding the pin forces immediate shutdown independent of other protections. This triple functionality reduces external component count in telecom designs.
What is the purpose of the exposed pad in the SOIC8E package?
The exposed pad on the MP6001DN-LF-P's SOIC8E package is electrically connected to GND and serves as the primary thermal path. It must be soldered to a large copper pour on the PCB to achieve the specified θJA = 50°C/W. Omitting thermal vias or insufficient pad area increases junction temperature, triggering thermal shutdown at lower output power.
Does MP6001DN-LF-P require an external compensation network?
Yes-COMP pin output drives an external Type II compensation network (typically two poles and one zero) connected between COMP, FB, and GND. The EV6001DN evaluation board provides validated values; omitting or mis-tuning this network causes instability, especially in optocoupler-based isolated loops with phase lag across the barrier.
How is zero-load regulation achieved without an auxiliary winding?
MP6001DN-LF-P achieves zero-load regulation through cycle-skipping: when feedback indicates excess output voltage, the controller skips entire switching cycles rather than reducing duty cycle to near-zero. This maintains regulation accuracy and minimizes light-load losses without requiring auxiliary winding bias or external LDOs.
What is the minimum recommended VCC bypass capacitor value?
A minimum 1µF ceramic capacitor is required between VCC and GND, placed as close as possible to the pin. This stabilizes the internal bias regulator during startup and transient load steps. Using less capacitance risks VCC droop below 4.5V, causing unintended restarts or erratic operation under dynamic load conditions.
MP6001DN-LF-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Flyback, Forward Converter
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V, 10V
- Voltage - Input (Max):
- 6V, 100V
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- 150V
- Current - Output:
- -
- Frequency - Switching:
- 55kHz ~ 550kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOICE
MP6001DN-LF-P FAQ
1.How can I place an order for MP6001DN-LF-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP6001DN-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 MP6001DN-LF-P reliable?
The price and inventory of MP6001DN-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 MP6001DN-LF-P is usually 5 days.
3.What payment methods are accepted for MP6001DN-LF-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP6001DN-LF-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP6001DN-LF-P?
MP6001DN-LF-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP6001DN-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 MP6001DN-LF-P?
For technical support, including MP6001DN-LF-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP6001DN-LF-P requirements.
6.How does Aetrix verify that MP6001DN-LF-P is sourced from the original manufacturer or authorized distributors?
All MP6001DN-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 MP6001DN-LF-P meets industry standards.
7.What is the process for return or replacement of MP6001DN-LF-P?
All MP6001DN-LF-P units undergo pre-shipment inspection (PSI). If there is an issue with MP6001DN-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 MP6001DN-LF-P part is unused and in its original packaging.
Return procedure for MP6001DN-LF-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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