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Monolithic Power Systems Inc. MP2328CGTL-P
- Part No.:
- MP2328CGTL-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- SOT-583
- Datasheet:
-
MP2328CGTL-P.pdf
- Description:
- IC REG BUCK ADJ 2A SOT583
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
MP2328CGTL-P from Monolithic Power Systems is a synchronous step-down DC-DC converter delivering 2A continuous output current with 450kHz switching frequency, integrated 130mΩ/60mΩ MOSFETs, power-good (PG) indication, configurable soft-start, and forced continuous conduction mode (FCCM). It operates from 4.5V–28V input to 0.5V–16V output, achieving >92% efficiency at 24V→5V/2A, and targets compact power rails in game consoles and flat-panel displays.
For engineers reviewing the MP2328CGTL-P datasheet, MP2328CGTL-P pinout, MP2328CGTL-P application, or MP2328CGTL-P equivalent, key selection criteria include its COT control architecture for fast transient response, ±1.5% reference accuracy over temperature, thermal shutdown at 150°C, hiccup-mode OCP, and SOT583 package layout compatibility with high-density PCBs.
Technical Context
The MP2328CGTL-P uses constant-on-time (COT) control with VIN- and VOUT-dependent on-time extension to maintain stable 450kHz switching across 4.5V–28V input range while enabling fast load transient recovery. Its internal high-side (130mΩ) and low-side (60mΩ) N-channel MOSFETs eliminate external switch losses and support FCCM operation down to light loads.
Power-good logic monitors FB voltage against dual thresholds (79–95% and 101–117% of 500mV reference) with 12μs rising and 20μs falling delays, while soft-start employs a 7.5μA internal current source charging an external capacitor to ramp VOUT monotonically into pre-biased loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 28V - supports wide industrial and consumer input rails including 12V, 19V, and 24V systems without external regulators. |
| Output Current | 2A continuous - sustains full load without derating up to +125°C junction temperature with proper PCB copper area. |
| Switching Frequency | 450kHz typical - enables compact 10μH inductor use and reduces EMI filter size versus lower-frequency buck converters. |
| Reference Voltage | 500mV ±1.5% over -40°C to +125°C - ensures tight output regulation stability across automotive and industrial temperature ranges. |
| Efficiency | >92% at 24V→5V/2A - minimizes thermal stress and enables fanless operation in space-constrained applications like MFPs. |
| MOSFET RDS(ON) | 130mΩ (HS), 60mΩ (LS) - reduces conduction loss and improves light-load efficiency versus discrete FET solutions. |
| Protection Features | SCP, hiccup-mode OCP, UVP, thermal shutdown at 150°C - provides autonomous fault recovery and system-level reliability without external supervision. |
Pinout & Package
MP2328CGTL-P is housed in a thermally enhanced 8-pin SOT583 package (2.0mm × 2.5mm × 0.55mm), featuring exposed pad for improved heat dissipation and optimized pin spacing for high-density routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PG | Open-drain power-good output | Asserts high when VOUT is within 90–112% of 500mV reference post-soft-start; requires external pull-up to VOUT for proper de-assertion during input loss. |
| 2 VIN | Main input supply rail | Accepts 4.5V–28V; must be decoupled with ≥10μF ceramic capacitor placed adjacent to pin to suppress high-frequency ripple. |
| 3 SW | Switch node | Connects to inductor; carries high di/dt; requires short, wide copper trace and minimized loop area to reduce EMI and voltage spikes. |
| 4 GND | System ground reference | Primary return path for power and feedback circuits; must be connected via multiple vias to inner ground plane for low-impedance thermal and signal paths. |
| 5 BST | Bootstrap supply for HS-FET driver | Requires 0.1μF ceramic capacitor between BST and SW to sustain gate drive voltage during HS-FET conduction. |
| 6 EN | Enable control input | Digital logic input (1.2V threshold); pulled low disables regulator; max 6V absolute rating prevents damage from overvoltage. |
| 7 SS | Soft-start timing node | Charged by 7.5μA internal current source; external capacitor sets ramp time (e.g., 100nF = ~67ms) to limit inrush current. |
| 8 FB | Feedback voltage sense | Monitors resistor divider output; 500mV reference sets VOUT = 500mV × (1 + R1/R2); high-impedance input (≤50nA) minimizes divider error. |
Key Features
| Feature | Design Value |
|---|---|
| Forced Continuous Conduction Mode (FCCM) | Eliminates mode transitions at light loads, ensuring consistent 450kHz operation, reduced output ripple, and predictable EMI profile across full 0–2A range. |
| Constant-On-Time (COT) Control | Delivers sub-10μs load transient response without external compensation components, simplifying design and improving dynamic regulation in CPU/GPU core rails. |
| Integrated Power Good (PG) | Provides system-level sequencing confirmation with programmable hysteresis and delay timing, enabling safe enablement of downstream logic and memory. |
| tON Extension for Dropout | Extends high-side on-time beyond 92% duty cycle to maintain regulation down to VIN = VOUT + 0.5V, supporting ultra-low dropout in battery-powered systems. |
| Hiccup-Mode Over-Current Protection | Enters periodic restart cycle upon sustained overload, limiting average power dissipation and preventing thermal runaway during short-circuit faults. |
Applications
| Game Consoles | Multi-Function Printers |
|---|---|
Use Scenario: Powering SoC core voltage rails requiring fast transient response during GPU-intensive rendering. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering 1.2V/2A with FCCM and COT control for stable core supply under dynamic load. Use Value: Maintains <±1% output deviation during 0–2A 10μs load steps, preventing processor throttling or reset events. |
Use Scenario: Generating 3.3V/2A logic supply for scanner engine control and network interface ICs. IC Role / Device Role / Timing Role: Compact, self-contained DC-DC converter replacing discrete buck controllers and external MOSFETs. Use Value: Reduces BOM count by 7 parts versus discrete solution while meeting EN55032 Class B conducted EMI limits. |
| Power Meters | Flat-Panel Televisions |
Use Scenario: Providing isolated 5V/2A auxiliary supply for metrology ADC and isolation barrier drivers. IC Role / Device Role / Timing Role: High-efficiency, low-noise buck stage operating from 12V or 24V utility bus with minimal thermal rise. Use Value: Achieves >90% efficiency at 12V→5V/2A, limiting temperature rise to <15°C above ambient on 2-layer PCB. |
Use Scenario: Supplying 12V/2A backlight LED driver bias rail in slim TV chassis with strict height constraints. IC Role / Device Role / Timing Role: Space-optimized SOT583 regulator enabling direct placement beneath metal shield without thermal derating. Use Value: Delivers full 2A output in 5mm² footprint with θJA = 55°C/W, eliminating need for heatsinks or airflow. |
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 |
|---|---|---|---|
| MP2328GTL-Z | Same die, standard-grade version without "C" suffix; ±2% reference accuracy vs. ±1.5%, no tON extension feature. | Limited to non-critical 5V/2A rails where dropout margin >1V and reference drift <±2% is acceptable. | Select MP2328GTL-Z only if cost sensitivity outweighs need for tight regulation and ultra-low dropout. |
| TPS54202DRCT | TI part with 4.5–28V input, 2A output, but uses voltage-mode PWM (not COT); 500kHz fixed freq; no PG pin; larger 10-pin WSON package. | Suitable for designs requiring TI ecosystem support or existing PCB footprints matching WSON-10, but lacks fast transient capability. | Choose TPS54202DRCT only when leveraging TI's WEBENCH tools or when PG functionality is not required. |
Compared with MP2328CGTL-P, MP2328GTL-Z sacrifices reference accuracy and dropout performance for lower cost, while TPS54202DRCT trades COT responsiveness and PG signaling for TI-specific design infrastructure and fixed-frequency predictability.
Availability
MP2328CGTL-P is available at Aetrix Electronics and suitable for game consoles, multi-function printers, power meters, and flat-panel televisions requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MP2328CGTL-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 power management ICs, with over two decades of expertise in DC-DC conversion, motor drivers, and LED lighting controllers.
The MP2328C product line delivers highly integrated, thermally robust buck converters targeting space-constrained consumer and industrial applications where efficiency, small footprint, and fast transient response are critical.
FAQ
What is the minimum recommended input capacitance for MP2328CGTL-P?
The datasheet specifies ≥10μF total input capacitance using X5R/X7R ceramic capacitors placed adjacent to the VIN pin. For 24V input and 2A load, a 22μF/25V X7R capacitor is recommended to limit input ripple to <100mV peak-to-peak and handle RMS ripple current exceeding 1A.
Can MP2328CGTL-P operate with a pre-biased output?
Yes, MP2328CGTL-P supports monotonic start-up into pre-biased outputs. Its bootstrap circuit refreshes during start-up, and the soft-start capacitor charges independently, preventing reverse current flow and ensuring controlled VOUT ramp even when the output is initially at 3.3V or 5V.
How is the soft-start time calculated for MP2328CGTL-P?
Soft-start time (tSS) in milliseconds equals (CSS in nF × 500mV) ÷ ISS, where ISS is the internal 7.5μA soft-start current. For example, a 100nF capacitor yields tSS ≈ 67ms. This formula is derived from the linear charging of CSS by the constant current source until VSS reaches VREF.
What is the maximum allowable BST capacitor value?
The BST capacitor must be 0.1μF ceramic (X7R or better) with 10V rating. Larger values do not improve performance and may cause startup delay or instability due to excessive charge time; smaller values risk insufficient gate drive voltage during high-duty-cycle operation.
Does MP2328CGTL-P require external compensation components?
No external compensation is required. The constant-on-time (COT) control architecture eliminates the need for type-II or type-III compensation networks, reducing design complexity and component count while maintaining stability across all input/output combinations.
What thermal derating applies to MP2328CGTL-P at 60°C ambient?
With θJA = 55°C/W on a 2-layer evaluation board, the maximum allowed power dissipation at 60°C ambient is (125°C − 60°C) ÷ 55°C/W = 1.18W. At 24V→5V/2A (10W input, 10W − 0.8W loss), this requires ≥4cm² of 2oz copper pour under the exposed pad to maintain safe junction temperature.
How does the PG pin behave during thermal shutdown?
During thermal shutdown, the PG pin is actively pulled low within 20μs of junction temperature exceeding 150°C. It remains low until temperature falls below 130°C hysteresis threshold and soft-start completes, ensuring downstream systems detect fault condition before resuming operation.
MP2328CGTL-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- MP
- Package/Case:
- SOT-583
- 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):
- 4.5V
- Voltage - Input (Max):
- 28V
- Voltage - Output (Min/Fixed):
- 0.5V
- Voltage - Output (Max):
- 16V
- Current - Output:
- 2A
- Frequency - Switching:
- 450kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-583
MP2328CGTL-P FAQ
1.How can I place an order for MP2328CGTL-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2328CGTL-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 MP2328CGTL-P reliable?
The price and inventory of MP2328CGTL-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2328CGTL-P is usually 5 days.
3.What payment methods are accepted for MP2328CGTL-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2328CGTL-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2328CGTL-P?
MP2328CGTL-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2328CGTL-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 MP2328CGTL-P?
For technical support, including MP2328CGTL-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2328CGTL-P requirements.
6.How does Aetrix verify that MP2328CGTL-P is sourced from the original manufacturer or authorized distributors?
All MP2328CGTL-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 MP2328CGTL-P meets industry standards.
7.What is the process for return or replacement of MP2328CGTL-P?
All MP2328CGTL-P units undergo pre-shipment inspection (PSI). If there is an issue with MP2328CGTL-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 MP2328CGTL-P part is unused and in its original packaging.
Return procedure for MP2328CGTL-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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