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Monolithic Power Systems Inc. MP2360DG-LF-Z
- Part No.:
- MP2360DG-LF-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 8-TFDFN Exposed Pad
- Datasheet:
-
MP2360DG-LF-Z.pdf
- Description:
- IC REG BUCK ADJ 1.8A 8QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,696
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Product details
Overview
MP2360DG-LF-Z from Monolithic Power Systems is a current-mode synchronous step-down DC/DC converter with integrated 0.3Ω high-side MOSFET, delivering 1.8A continuous output current across 4.5V–24V input range, fixed 1.4MHz switching frequency, and adjustable 0.81V–15V output voltage - deployed in distributed power rails for broadband communications equipment.
For engineers reviewing the MP2360DG-LF-Z datasheet, MP2360DG-LF-Z pinout, MP2360DG-LF-Z application, or MP2360DG-LF-Z equivalent, key selection criteria include thermal shutdown threshold (150°C), cycle-by-cycle overcurrent protection (2.5A peak), feedback reference accuracy (±2.5% at 0.81V), and QFN8 package thermal resistance (θJA = 80°C/W).
Technical Context
The MP2360 operates in constant-frequency current-mode control with internal slope compensation, enabling fast transient response and stable loop behavior with ceramic output capacitors. Its error amplifier integrates the difference between FB voltage and 0.81V bandgap reference to regulate output.
Bootstrap circuitry drives the high-side MOSFET gate above VIN via external BST capacitor (0.1–1µF); under-voltage lockout (2.5–3.1V rising threshold, 150mV hysteresis) ensures reliable startup. Frequency foldback activates below 250mV FB to limit current during short-circuit faults.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 24V - supports wide industrial and telecom supply rails without pre-regulation. |
| Output Current | 1.8A continuous - sufficient for powering FPGAs, DSPs, and interface ICs in compact systems. |
| Switching Frequency | Fixed 1.4MHz - enables small external LC components and avoids AM radio band interference. |
| Feedback Reference | 0.810V ±2.5% - sets output voltage via resistor divider; low tolerance minimizes calibration overhead. |
| Internal MOSFET RDS(ON) | 0.3Ω - reduces conduction loss and thermal stress at full load in 2mm × 2mm QFN8 package. |
| Shutdown Current | 0.1µA - enables ultra-low-power system sleep modes without external disconnect switches. |
| Thermal Shutdown | 150°C - protects against sustained overload or poor PCB heatsinking in enclosed environments. |
Pinout & Package
MP2360DG-LF-Z uses a thermally enhanced 2mm × 2mm QFN8 package with exposed thermal pad (JEDEC MO-229 VCCD-3 compliant). Pin 1 is marked by corner chamfer or dot; pins 1 and 8 are no-connect (NC) and must remain unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 NC | No Connect | Unused silicon pads; must be left floating or tied to GND only if required by PCB thermal relief - not electrically connected internally. |
| 2 SW | Switch Node | Drains high-side MOSFET; connects to inductor and Schottky diode anode - carries high di/dt, requires tight layout. |
| 3 IN | Input Supply | Accepts 4.5–24V unregulated input; requires local 10µF ceramic capacitor to suppress switching noise and surge currents. |
| 4 EN | Enable Control | Logic-level input (1.2V high threshold); pulls up to VIN or external bias to activate regulator - supports sequencing and power-down control. |
| 5 FB | Feedback Input | Senses output voltage via resistor divider; internal 0.81V reference enables precise regulation down to 0.81V output. |
| 6 GND | Power Ground | Main return path for switch current and feedback reference; must connect directly to thermal pad and minimize impedance to reduce noise coupling. |
| 7 BST | Bootstrap Supply | Connects to SW through 0.1µF ceramic capacitor to generate gate drive voltage >VIN for high-side MOSFET. |
Key Features
| Feature | Design Value |
|---|---|
| Stable with low-ESR ceramic capacitors | Eliminates need for electrolytic or tantalum output caps - improves reliability and reduces board area in space-constrained designs. |
| Cycle-by-cycle overcurrent protection | Clamps peak inductor current at 2.5A - prevents MOSFET failure during output shorts without latch-off delay. |
| Frequency foldback under fault | Reduces switching frequency to 460kHz when FB < 250mV - limits power dissipation during sustained overload or short-circuit conditions. |
| 0.1µA shutdown quiescent current | Enables battery-backed systems to maintain >1-year shelf life without manual disconnection or mechanical switches. |
| Integrated 0.3Ω high-side MOSFET | Removes external switch and driver complexity - simplifies BOM and reduces footprint versus controller + discrete FET solutions. |
Applications
| Broadband Communications Equipment | Digital Entertainment Systems |
|---|---|
|
Use Scenario: Powering Ethernet PHYs, SFP+ modules, and baseband processors in access gateways and DSLAMs. IC Role / Device Role / Timing Role: Primary point-of-load (POL) buck regulator converting 12V/24V backplane to 3.3V/5V logic rails. Use Value: 1.4MHz operation allows use of 4.7µH inductors and 22µF X7R ceramics - achieving <10mVpp ripple while fitting within 100mm² PCB area. |
Use Scenario: Supplying SoC cores, DDR memory, and HDMI transceivers in set-top boxes and streaming media players. IC Role / Device Role / Timing Role: Adjustable-output buck converter delivering 1.2V core and 1.8V I/O voltages from single 12V input. Use Value: 0.81V feedback reference and ±2.5% accuracy enable direct regulation of modern low-voltage processors without external DAC or trimming. |
| Distributed Power Systems | Battery Charger Pre-Regulator |
|
Use Scenario: Generating intermediate 5V/12V rails in modular server PSUs or industrial PLC backplanes. IC Role / Device Role / Timing Role: Secondary-stage buck converter stepping down 24V intermediate bus to isolated 5V auxiliary supplies. Use Value: Wide 4.5–24V input range accommodates varying bus voltages across load steps and line transients without derating. |
Use Scenario: Regulating variable solar panel or multi-cell Li-ion input before linear charger ICs. IC Role / Device Role / Timing Role: High-efficiency pre-regulator reducing dropout voltage and heat in downstream linear charging stages. Use Value: 0.3Ω RDS(ON) and 1.4MHz switching minimize conduction and switching losses - extending battery runtime in portable chargers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2331H | Higher 2.5A continuous output, 2.2MHz switching, improved light-load efficiency via PSM mode. | Preferred for new designs requiring higher current or smaller LC filters; not pin-compatible with MP2360DG. | Select MP2331H for next-gen designs needing >1.8A or tighter size constraints; MP2360DG-LF-Z remains viable for legacy replacements. |
| LM2678-ADJ | 5A output, 260kHz fixed frequency, external MOSFET required, larger SO-8 package. | Used where higher current or lower EMI is prioritized over board area; lacks integrated high-side FET. | Choose LM2678-ADJ only when 5A capability or lower switching noise is mandatory - adds BOM cost and layout complexity. |
Compared with MP2331H and LM2678-ADJ, MP2360DG-LF-Z offers optimal balance of integration (integrated 0.3Ω FET), compact 2×2mm footprint, and proven 1.4MHz performance for mid-power POL applications - making it suitable for cost-sensitive, space-constrained legacy upgrades.
Availability
MP2360DG-LF-Z is available at Aetrix Electronics and suitable for broadband communications equipment, digital entertainment systems, and distributed power systems requiring stable component supply and long-term industrial availability.
Supply support for MP2360DG-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, headquartered in California with global design and support centers.
The MP2360 belongs to MPS's mainstream buck converter product line, designed specifically for compact, high-efficiency point-of-load regulation in telecom, computing, and consumer electronics - emphasizing integration, thermal robustness, and ease of layout.
FAQ
What is the maximum recommended output voltage for MP2360DG-LF-Z?
The MP2360DG-LF-Z supports output voltages from 0.81V to 15V, set by an external resistor divider on the FB pin. The upper limit is constrained by the absolute maximum rating of the FB pin (6V) and practical stability considerations - outputs above 12V require careful loop compensation and low-ESR output capacitance to maintain phase margin.
Can MP2360DG-LF-Z operate with a 3.3V input supply?
No - the MP2360DG-LF-Z has a minimum operating input voltage of 4.5V, defined by its under-voltage lockout (UVLO) rising threshold of 2.5–3.1V and internal bias requirements. A 3.3V input falls below specification and will prevent startup or cause erratic regulation.
Is an external bootstrap diode required for normal operation?
An external bootstrap diode (e.g., IN4148) is optional and recommended only when VOUT ≥ 3.3V and duty cycle exceeds 65% (i.e., VOUT/VIN > 0.65), such as in 12V-to-5V conversion. It improves gate drive efficiency but is not needed for 24V-to-3.3V or light-load conditions.
What is the purpose of pins 1 and 8 labeled "NC"?
Pins 1 and 8 are true no-connect terminals - physically present but not bonded to internal circuitry. They must remain unconnected in the schematic and layout; tying them to GND or other nets may compromise thermal performance or introduce parasitic coupling without functional benefit.
How does frequency foldback improve fault handling?
When FB voltage drops below 250mV (indicating severe overload or short circuit), the MP2360 reduces switching frequency from 1.4MHz to 460kHz. This lowers average switching loss and peak current stress, allowing safe thermal dissipation during fault conditions without immediate shutdown.
What PCB layout practices are critical for stable MP2360DG-LF-Z operation?
Key practices include: (1) minimizing the high-current loop formed by IN, SW, and D1; (2) connecting GND directly to the exposed thermal pad with multiple vias; (3) routing FB traces away from SW and keeping feedback resistors adjacent to the IC; and (4) placing BST capacitor between SW and BST pins with shortest possible trace length.
Why is the MP2360 marked "Not Recommended for New Designs"?
MPS issued this notice because the MP2331H offers superior specifications (2.5A, 2.2MHz, PSM mode) and active long-term support. MP2360DG-LF-Z remains fully functional and available for existing designs, but new projects should evaluate MP2331H for improved performance and roadmap alignment.
MP2360DG-LF-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 8-TFDFN 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):
- 4.5V
- Voltage - Input (Max):
- 24V
- Voltage - Output (Min/Fixed):
- 0.81V
- Voltage - Output (Max):
- 15V
- Current - Output:
- 1.8A
- Frequency - Switching:
- 1.4MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-QFN (2x2)
MP2360DG-LF-Z FAQ
1.How can I place an order for MP2360DG-LF-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2360DG-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 MP2360DG-LF-Z reliable?
The price and inventory of MP2360DG-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 MP2360DG-LF-Z is usually 5 days.
3.What payment methods are accepted for MP2360DG-LF-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2360DG-LF-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2360DG-LF-Z?
MP2360DG-LF-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2360DG-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 MP2360DG-LF-Z?
For technical support, including MP2360DG-LF-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2360DG-LF-Z requirements.
6.How does Aetrix verify that MP2360DG-LF-Z is sourced from the original manufacturer or authorized distributors?
All MP2360DG-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 MP2360DG-LF-Z meets industry standards.
7.What is the process for return or replacement of MP2360DG-LF-Z?
All MP2360DG-LF-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP2360DG-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 MP2360DG-LF-Z part is unused and in its original packaging.
Return procedure for MP2360DG-LF-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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