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Monolithic Power Systems Inc. MP2143HGD-P
- Part No.:
- MP2143HGD-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 10-VFDFN
- Datasheet:
-
MP2143HGD-P.pdf
- Description:
- IC REG BUCK ADJ 3A 10QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,182
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Product details
Overview
MP2143HGD-P from Monolithic Power Systems is a synchronous step-down DC/DC converter IC with integrated 80mΩ high-side and 40mΩ low-side MOSFETs, delivering up to 3A continuous output current from a 2.5V–5.5V input while regulating output down to 0.6V. It employs constant-on-time control for fast transient response and operates at a default 2.0MHz switching frequency in a compact QFN-10 (2mm×3mm) package-ideal for powering FPGA core rails and portable instrument I/O subsystems.
For engineers reviewing the MP2143HGD-P datasheet, MP2143HGD-P pinout, MP2143HGD-P application, or MP2143HGD-P equivalent, key selection criteria include its 2.0MHz fixed-frequency operation, ±10% power-good window with open-drain PG output, 1.3ms soft-start time, cycle-by-cycle over-current protection, and compatibility with low-ESR ceramic output capacitors without external compensation.
Technical Context
The MP2143HGD-P uses constant-on-time (COT) control with input-voltage feed-forward to maintain stable 1.8–3.0MHz switching across input (2.5–5.5V) and output (0.6–VIN−0.5V) ranges. Its internal PFET/NFET power stage enables 100% duty-cycle operation in dropout, supporting ultra-low VOUT regulation.
It integrates EN logic-level control (1.2V high threshold), open-drain power-good (PG) with 500kΩ internal pull-up and ±10% FB voltage window, thermal shutdown at 170°C with 30°C hysteresis, and hiccup-mode short-circuit protection triggered by 4.8A high-side current limit.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 5.5V - supports single-cell Li-ion, USB-powered, and dual-supply systems without pre-regulation. |
| Output Voltage Range | 0.6V to VIN−0.5V - enables direct core supply for modern FPGAs and DSPs requiring sub-1V rails. |
| Switching Frequency | 2.0MHz typical (1.8–3.0MHz over temp) - allows use of small 0.47µH inductors and reduces EMI filtering burden. |
| Feedback Voltage | 600mV ±12mV - sets precise output via external resistor divider; enables accurate 1.2V, 1.8V, 2.5V, and 3.3V outputs. |
| Power-Good Threshold | ±10% FB window (540mV–660mV) with 110µs delay - provides reliable rail sequencing signal for multi-rail systems. |
| Thermal Shutdown | 170°C junction temperature with 30°C hysteresis - protects against sustained overload without latch-off. |
| Soft-Start Time | 1.3ms (10% to 90% VOUT) - prevents inrush current and output overshoot during power-up. |
Pinout & Package
MP2143HGD-P is housed in a thermally enhanced QFN-10 package (2mm × 3mm, 0.5mm pitch) with exposed thermal pad (PGND-connected) for efficient heat dissipation in space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN | Enable control input | Active-high logic input; ≥1.2V enables regulator; internal 1MΩ pulldown ensures safe disable when floating. |
| 2 - FB | Feedback reference node | Senses output voltage via external resistor divider; regulates VOUT to 600mV at this pin. |
| 3 - AGND | Analog ground reference | Separate ground for internal error amplifier and reference; must be connected to quiet ground plane near FB. |
| 4 - OUT | Output voltage sense | Direct connection to regulated output node; improves load regulation accuracy under high-current transients. |
| 5 - NC | No-connect terminal | Not internally bonded; may be left floating or tied to PGND for thermal enhancement only. |
| 6,7 - PGND | Power ground return | High-current return path for SW and internal NFET; must be low-impedance copper pour tied to thermal pad. |
| 8 - SW | Switch node | Drives external inductor; carries high di/dt; requires short, wide trace and tight coupling to PGND. |
| 9 - VIN | Main input supply | Accepts 2.5–5.5V unregulated input; requires local 10µF ceramic capacitor placed adjacent to pin. |
| 10 - PG | Open-drain power-good indicator | Pulled high to VIN via 500kΩ internal resistor when FB is within ±10%; sinks >1mA when asserted low. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Stage | 80mΩ HS-FET + 40mΩ LS-FET enables >90% efficiency at 3A/1.2V out from 3.3V in with minimal external components. |
| Constant-On-Time Control | Delivers <10µs load transient response without external loop compensation; maintains stable frequency across full VIN/VOUT range. |
| 100% Duty-Cycle Operation | Supports dropout mode down to VOUT = VIN − 0.5V, enabling seamless regulation during brownout or battery sag conditions. |
| Hiccup-Mode Protection | Enters low-duty-cycle recovery after over-current or short-circuit fault, limiting average power dissipation and preventing thermal runaway. |
| Auto Output Discharge | Internally discharges VOUT through LS-FET when EN is deasserted, ensuring rapid rail collapse for safe system reset sequencing. |
Applications
| Portable Instrument Power | FPGA Core Supply |
|---|---|
|
Use Scenario: Battery-powered handheld test equipment requiring clean, low-noise 1.2V core rail for ADC/DAC and microcontroller subsystems. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering regulated 1.2V @ 2.5A with fast load-step response to support burst-mode sampling. Use Value: 2.0MHz operation minimizes inductor size (<1.0mm height), while ±10% PG window enables precise sequencing with MCU-controlled power-up sequence. |
Use Scenario: High-density FPGA development board needing tightly regulated 0.85V core voltage with <±1% tolerance under dynamic logic switching loads. IC Role / Device Role / Timing Role: Core voltage regulator with OUT pin sensing and COT control to maintain voltage stability during 10A/ns logic transients. Use Value: 600mV FB reference and 1.3ms soft-start prevent configuration errors during FPGA bitstream loading; QFN-10 footprint saves board area in BGA escape routing zones. |
| Wireless Network Card | Low-Voltage I/O System |
|
Use Scenario: Mini-PCIe Wi-Fi 6 module powered from 3.3V host rail, requiring isolated 1.8V I/O and 1.0V RF bias rails. IC Role / Device Role / Timing Role: Secondary buck converter generating 1.8V for WLAN MAC interface, synchronized via EN to host power management controller. Use Value: EN pin logic compatibility (1.2V high threshold) allows direct GPIO control; hiccup-mode SCP prevents damage during antenna detuning faults. |
Use Scenario: Industrial sensor node using 3.3V system rail to generate 2.5V analog front-end supply with low ripple and high PSRR. IC Role / Device Role / Timing Role: Low-noise point-of-load regulator with ceramic-capacitor optimization and AGND/FB separation for analog integrity. Use Value: Stable operation with 22µF X7R ceramic output cap eliminates need for tantalum; 50ns minimum off-time prevents sub-harmonic oscillation at light loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RT6220AGQW | Fixed 1.5MHz freq, 2.7–5.5V input, 3A rating, but lacks PG output and 100% duty-cycle capability. | Requires external PG circuitry for sequencing; unsuitable for deep-dropout scenarios below 0.8V. | Select when cost sensitivity outweighs sequencing needs and input stays >2.7V. |
| TPS62865ARGTR | 2.7–6.5V input, 4A rating, 2.0MHz, integrated PG, but FB = 600mV ±15mV (wider tolerance) and no OUT pin. | Higher input range suits wider battery chemistries; reduced FB accuracy impacts tight-tolerance analog rails. | Prefer for higher-current designs where 4A headroom and extended VIN justify tighter layout constraints. |
Compared with RT6220AGQW and TPS62865ARGTR, MP2143HGD-P uniquely combines 2.5V minimum input, 100% duty-cycle operation, and dedicated OUT pin for superior load regulation in portable and FPGA applications-making it optimal where input voltage margin and transient fidelity are critical.
Availability
MP2143HGD-P is available at Aetrix Electronics and suitable for portable instrument power, FPGA core supply, wireless network card design, and low-voltage I/O systems requiring stable component supply with guaranteed long-term sourcing.
Supply support for MP2143HGD-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 design centers in the US, China, and Taiwan.
The MP2143H product line delivers compact, high-frequency synchronous buck converters targeting space-constrained, battery-powered, and FPGA-centric applications demanding fast transient response and minimal external components.
FAQ
What is the minimum recommended output capacitance for stable operation?
The MP2143HGD-P is stable with ≥22µF of low-ESR ceramic output capacitance (X5R/X7R). Using less than 10µF risks instability under heavy load transients due to insufficient phase margin; the datasheet confirms stable operation with 22µF/0.5mΩ ESR in all typical performance curves.
Does MP2143HGD-P require an external compensation network?
No. The MP2143HGD-P uses constant-on-time control architecture and is internally compensated. No external Type-II or Type-III compensation network is needed-only the FB resistor divider, input/output capacitors, and inductor are required for full operation.
Can MP2143HGD-P operate with input voltage below 2.5V?
No. The absolute minimum operating input voltage is 2.5V per the Recommended Operating Conditions table. Below this, UVLO prevents startup; the 2.0V–2.4V UVLO rising threshold ensures reliable enable only above 2.5V nominal operation.
How is thermal performance affected by the NC pin (Pin 5)?
Pin 5 is not internally connected. When tied to PGND, it improves thermal conduction from the die to the PCB ground plane via additional copper area-but adds no electrical function. Thermal resistance θJA remains 65°C/W (measured on 4-layer JEDEC board) regardless of NC pin connection.
What happens to the output during EN pin deactivation?
When EN falls below 0.4V, the MP2143HGD-P disables switching, turns off both MOSFETs, and activates auto-discharge via the low-side FET to rapidly collapse VOUT. This ensures controlled power-down without floating rail conditions-critical for FPGA configuration integrity.
Is the PG pin compatible with 1.8V logic systems?
Yes. The PG pin is open-drain with internal 500kΩ pull-up to VIN. When pulled externally to 1.8V via a level-shifting resistor, it safely interfaces with 1.8V GPIOs; sinking capability exceeds 1mA at ≤400mV low-state voltage, meeting standard logic-low thresholds.
What inductor DCR value maximizes efficiency at 3A load?
For peak efficiency at 3A, select an inductor with DC resistance ≤15mΩ. At 3A DC, this limits I²R loss to ≤135mW-verified in Figure 6 efficiency plots showing >92% efficiency at 3.3V→1.2V/3A with 0.47µH/12mΩ shielded inductor.
MP2143HGD-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 10-VFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5V
- Current - Output:
- 3A
- Frequency - Switching:
- 1.8MHz ~ 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-QFN (3x2)
MP2143HGD-P FAQ
1.How can I place an order for MP2143HGD-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2143HGD-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 MP2143HGD-P reliable?
The price and inventory of MP2143HGD-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2143HGD-P is usually 5 days.
3.What payment methods are accepted for MP2143HGD-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2143HGD-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2143HGD-P?
MP2143HGD-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2143HGD-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 MP2143HGD-P?
For technical support, including MP2143HGD-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2143HGD-P requirements.
6.How does Aetrix verify that MP2143HGD-P is sourced from the original manufacturer or authorized distributors?
All MP2143HGD-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 MP2143HGD-P meets industry standards.
7.What is the process for return or replacement of MP2143HGD-P?
All MP2143HGD-P units undergo pre-shipment inspection (PSI). If there is an issue with MP2143HGD-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 MP2143HGD-P part is unused and in its original packaging.
Return procedure for MP2143HGD-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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