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Monolithic Power Systems Inc. MP2209DL-LF-Z
- Part No.:
- MP2209DL-LF-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 14-VFDFN Exposed Pad
- Datasheet:
-
MP2209DL-LF-Z.pdf
- Description:
- IC REG BUCK ADJ 2A 14QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,214
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Product details
Overview
MP2209DL-LF-Z from Monolithic Power Systems is a 16V, 2A, 600kHz synchronous step-down DC/DC converter with integrated 80mΩ high- and low-side MOSFETs, adjustable 0.8V–0.9×VIN output, and power-good (POK) monitoring. It operates from 3V–16V input with 3V–6V bias supply and delivers up to 2A in a 3mm×4mm QFN-14 package-used for µP/FPGA core supplies and point-of-load regulation in telecom and display systems.
For engineers reviewing the MP2209DL-LF-Z datasheet, MP2209DL-LF-Z pinout, MP2209DL-LF-Z application, or MP2209DL-LF-Z equivalent, key selection criteria include its fixed 600kHz switching frequency, internal compensation enabling ceramic capacitor stability, EN/SYNC dual-function pin, thermal shutdown at 150°C, and ±10% POK window with 30μs deglitching.
Technical Context
The MP2209 employs peak-current-mode PWM control with transconductance gain of 11.25A/V, approximating the converter as a single-pole system to simplify loop compensation. Its internal Type II network eliminates external compensation components while retaining flexibility for transient optimization via FB resistor selection.
It integrates dual UVLO on IN and VCC pins (2.85V/2.95V thresholds), cycle-by-cycle current limiting (4A high-side / 2A low-side), hiccup-mode short-circuit protection, and bootstrap gate drive with BS-to-SW capacitor coupling. The EN/SYNC pin supports both enable logic (1.6V high, 0.4V low) and external clock synchronization from 0.5MHz to 2MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3V to 16V - supports wide industrial and telecom input rails without pre-regulation |
| Output Current | Up to 2A continuous - sufficient for FPGA I/O banks and ASIC core domains |
| Switching Frequency | Fixed 600kHz (±25%) - enables compact magnetics and predictable EMI filtering |
| Feedback Reference | 0.794V typical (±1.5% over temp) - sets output accuracy for 1.2V–5V regulation via resistive divider |
| Thermal Shutdown | 150°C with 20°C hysteresis - protects die during overload or poor PCB thermal design |
| Power Good Window | ±10% output tolerance with 30μs deglitch - ensures reliable system power sequencing |
| Soft-Start Current | 5µA constant current - allows precise ramp time control via external SS capacitor |
Pinout & Package
The MP2209DL-LF-Z is housed in a thermally enhanced 3mm × 4mm, 14-lead QFN package with exposed thermal pad. Pin 1 is marked by a dot; the exposed pad must be soldered to a solid GND plane for optimal thermal performance and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 12, Exposed Pad | PGND / AGND / Thermal Pad | Low-impedance return path for high di/dt currents; thermal pad must connect to GND plane for <48°C/W θJA |
| 2 | SS | Soft-start control node - internal 5µA current source charges external capacitor to limit inrush |
| 4, 11 | SW | Switch node - connects to inductor; both pins must be shorted externally to minimize parasitic inductance |
| 5, 10 | IN | Main power input - requires local 2×(10–22µF) X5R/X7R ceramic decoupling near pins |
| 6 | N/C | No internal connection - must remain unconnected and unstubbed |
| 7 | BS | Bootstrap supply - capacitor between BS and SW provides floating gate drive for high-side MOSFET |
| 8 | VCC | Bias supply input - powers control circuitry and gate drivers; requires RC filter (10Ω + 1µF) per layout guide |
| 9 | POK | Open-drain power-good - pulled low when VOUT deviates >±10%; needs external pull-up to VCC |
| 13 | EN/SYNC | Dual-function pin - enables device (>1.6V) or synchronizes oscillator (0.5–2MHz external clock) |
| 14 | FB | Feedback input - compares output voltage (via resistor divider) against 0.794V reference |
Key Features
| Feature | Design Value |
|---|---|
| Internally compensated control loop | Eliminates external compensation components while supporting bandwidth tuning via FB resistor selection |
| Synchronous rectification | Integrated 80mΩ low-side MOSFET replaces Schottky diode - improves efficiency by ~3–5% at 1A load |
| Adjustable output range | 0.8V to 0.9×VIN - supports dynamic voltage scaling for µP cores and configurable I/O rails |
| Frequency synchronization | EN/SYNC pin accepts 0.5–2MHz external clock - enables multi-rail EMI alignment in dense PCB layouts |
| Pre-biased output startup | Disables switching until soft-start voltage exceeds FB voltage - prevents reverse current into pre-charged outputs |
Applications
| µP/FPGA Core Supply | Telecom Point-of-Load |
|---|---|
Use Scenario: Regulating 1.2V core voltage for Xilinx Artix-7 FPGA under dynamic load transients up to 1.8A. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering tightly regulated, low-noise core power with fast transient response. Use Value: Internal compensation and 600kHz switching enable stable operation with ≤47µF ceramic output capacitance and minimal board area. | Use Scenario: Generating 3.3V rail for Ethernet PHY and management MCU in 1RU network switch with shared 12V backplane. IC Role / Device Role / Timing Role: Isolated point-of-load converter synchronized to system clock to reduce conducted EMI across shared input bus. Use Value: EN/SYNC pin allows alignment to 1MHz system clock, suppressing switching noise peaks in 100kHz–10MHz EMC band. |
| Display Panel I/O Supply | LCD TV Logic Rail |
Use Scenario: Powering 1.8V I/O interface for AMOLED timing controller in automotive infotainment display. IC Role / Device Role / Timing Role: Secondary buck converter supplying noise-sensitive digital interface with tight output tolerance. Use Value: ±10% POK output with 30μs deglitch ensures reliable GPU reset signaling during cold-cranking voltage dips. | Use Scenario: Providing 5V logic rail for main SoC and HDMI transmitter in cost-sensitive LCD TV design. IC Role / Device Role / Timing Role: Fixed-frequency buck regulator operating from 12V front-end supply with thermal foldback during ambient >70°C. Use Value: 150°C thermal shutdown with 20°C hysteresis prevents latch-up during sustained high-temperature operation in enclosed chassis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP1474S | Successor part: 17V input, 2A, 600kHz, improved light-load efficiency, same QFN-14 footprint | Recommended for new designs; supports lower quiescent current (100µA vs. 750µA) and wider VIN range | Select MP1474S for production releases requiring extended lifecycle support and RoHS-3 compliance |
| MP2307DN | Pin-compatible QFN-8 variant: 23V input, 3A, 340kHz, no SYNC or POK, higher RDS(on) (110mΩ/140mΩ) | Lacks frequency sync and power-good output; suited for non-critical, cost-driven loads where EMI alignment isn't required | Choose MP2307DN only if board space is constrained and POK/SYNC functionality is omitted from system architecture |
Compared with MP2209DL-LF-Z, MP1474S offers longer-term availability and better light-load performance, while MP2307DN trades feature set for lower cost and smaller package-but lacks critical system-monitoring functions.
Availability
MP2209DL-LF-Z is available at Aetrix Electronics and suitable for µP core supplies, telecom point-of-load regulation, and display panel I/O rails requiring stable component supply through legacy design support cycles.
Supply support for MP2209DL-LF-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 design centers in the US, China, and Taiwan, and global distribution.
The MP2209 belongs to MPS's legacy synchronous buck regulator product line, engineered for compact, high-efficiency DC/DC conversion in space-constrained consumer and industrial applications where fixed-frequency operation and integrated MOSFETs reduce bill-of-materials count.
FAQ
What is the maximum allowable input voltage for MP2209DL-LF-Z?
The absolute maximum input voltage (IN to GND) is +18V, but the recommended operating range is 3V to 16V. Operation above 16V risks exceeding internal MOSFET breakdown limits and may trigger immediate thermal shutdown due to excessive conduction losses in the 80mΩ switches.
Can MP2209DL-LF-Z operate with a pre-biased output?
Yes - the IC disables switching until the soft-start capacitor voltage exceeds the FB pin voltage, preventing reverse current flow into a pre-charged output. This behavior is confirmed in the "Soft-Start and Output Pre-Bias Startup" section of the datasheet and requires no external circuitry.
Is the MP2209DL-LF-Z pin-compatible with MP1474S?
No - although both use 3mm×4mm QFN packages, MP2209DL-LF-Z is QFN-14 while MP1474S is QFN-16. Pin assignments differ significantly: MP1474S relocates POK and adds an additional GND, and its EN/SYNC function is implemented on a dedicated pin rather than shared.
What is the purpose of the N/C pin (Pin 6)?
Pin 6 is internally unconnected and must remain floating - no trace, pad, or solder should be attached. Routing or connecting this pin risks introducing parasitic coupling or compromising thermal pad solder integrity, potentially degrading thermal resistance or causing intermittent faults.
How does the POK pin behave during startup and fault conditions?
The POK pin remains high-impedance until VOUT reaches ±10% of target; it then pulls low only if VOUT falls outside that window for >30μs. During short-circuit events, POK goes low within microseconds and stays low throughout hiccup-mode recovery cycles, providing unambiguous fault signaling to system supervisors.
What is the minimum output voltage achievable with MP2209DL-LF-Z?
The minimum regulated output is 0.8V, defined by the internal feedback reference voltage. This value is guaranteed across temperature (–40°C to +85°C) and load (0–2A), with typical accuracy of ±1.5% - enabling direct support of modern low-voltage µP cores without external reference trimming.
MP2209DL-LF-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 14-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 14.4V
- Current - Output:
- 2A
- Frequency - Switching:
- 600kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-QFN (3x4)
MP2209DL-LF-Z FAQ
1.How can I place an order for MP2209DL-LF-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2209DL-LF-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 MP2209DL-LF-Z reliable?
The price and inventory of MP2209DL-LF-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2209DL-LF-Z is usually 5 days.
3.What payment methods are accepted for MP2209DL-LF-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2209DL-LF-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2209DL-LF-Z?
MP2209DL-LF-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2209DL-LF-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 MP2209DL-LF-Z?
For technical support, including MP2209DL-LF-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2209DL-LF-Z requirements.
6.How does Aetrix verify that MP2209DL-LF-Z is sourced from the original manufacturer or authorized distributors?
All MP2209DL-LF-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 MP2209DL-LF-Z meets industry standards.
7.What is the process for return or replacement of MP2209DL-LF-Z?
All MP2209DL-LF-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP2209DL-LF-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 MP2209DL-LF-Z part is unused and in its original packaging.
Return procedure for MP2209DL-LF-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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