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Monolithic Power Systems Inc. MP2392GTL-P
- Part No.:
- MP2392GTL-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- SOT-583
- Datasheet:
-
MP2392GTL-P.pdf
- Description:
- IC REG BUCK ADJ 2A SOT583
- Quantity:
- Payment:
- Shipping:
Inventory:3,402
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Product details
Overview
MP2392GTL-P from Monolithic Power Systems is a fully integrated, synchronous step-down DC/DC converter with internal 110mΩ/45mΩ MOSFETs, delivering 2A continuous output current across a 4.2V–24V input range. It employs constant-on-time (COT) control for fast transient response and tight regulation, features power-good (PG) indication, programmable soft-start, and operates at 650kHz in SOT583 package-used in flat-panel displays and game consoles for stable 3.3V/2A rail generation.
For engineers reviewing the MP2392GTL-P datasheet, MP2392GTL-P pinout, MP2392GTL-P application, or MP2392GTL-P equivalent, key selection considerations include its COT architecture for dynamic load handling, integrated high- and low-side MOSFETs eliminating external switches, PG open-drain signaling for system sequencing, thermal shutdown at 150°C, and pre-bias start-up capability for hot-swap environments.
Technical Context
The MP2392GTL-P implements constant-on-time (COT) control with input- and output-voltage-dependent on-timer to maintain ~650kHz switching frequency across wide VIN and VOUT ranges. Its valley-current sensing enables over-current protection with hiccup-mode recovery, while internal bootstrap charging sustains high-side gate drive without external diode.
It integrates dual N-channel MOSFETs (110mΩ HS / 45mΩ LS), a precision 805mV feedback reference (±1.5%), and independent UVLO (4V rising) and OVP (120% VREF rising) comparators. The PG pin asserts high only after soft-start completion and sustained VFB within 87–120% of VREF-enabling reliable power-rail monitoring in multi-rail systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.2V to 24V - supports 5V, 12V, and 19V industrial and consumer rails without external regulators. |
| Output Current | 2A continuous - delivers full rated load with <20°C case rise at 19VIN/3.3VOUT on 2-layer PCB. |
| Switching Frequency | 650kHz typical - enables compact 4.7µH inductors and reduces EMI filtering burden vs. lower-frequency converters. |
| Feedback Reference | 805mV ±1.5% - sets output voltage via resistor divider; enables 1.0V to 13V outputs with <±1% line/load regulation. |
| Quiescent Current | 200µA - maintains high light-load efficiency in PSM mode, critical for always-on subsystems. |
| Thermal Shutdown | 150°C with 20°C hysteresis - protects against sustained overload or poor heatsinking without latch-off. |
| Power-Good Threshold | 92% to 120% of VREF rising/falling - provides clean, glitch-free sequencing signal for FPGA or processor reset logic. |
Pinout & Package
SOT583 (1.6mm × 2.1mm, 0.5mm pitch) thermally enhanced 8-pin package with exposed pad for improved θJA = 55°C/W on 2-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - PG | Open-drain power-good output | Asserts high only after soft-start completes and VFB remains within 87–120% VREF; requires external pull-up for system monitoring. |
| 2 - IN | Main input supply | Accepts 4.2V–24V; decoupled by ≥22µF ceramic capacitor placed adjacent to pin to minimize high-frequency noise injection. |
| 3 - SW | Switch node | Connects to inductor; carries high di/dt pulses - requires short, wide copper trace and ground plane clearance to reduce EMI. |
| 4 - GND | Power and signal reference | Primary return path for HS/LS FETs and control circuits; must be solid copper pour with multiple vias to inner ground planes. |
| 5 - BST | Bootstrap supply for HS gate driver | Connected to SW via 1µF ceramic capacitor; enables floating high-side drive without external charge pump or diode. |
| 6 - EN | Enable control input | Active-high digital enable; 1.23V threshold with 100mV hysteresis; clamped to 2.8V Zener to prevent overvoltage damage. |
| 7 - SS | Soft-start timing input | Charged by internal 7.3µA current source; external capacitor sets ramp time per TSS(ms) = 2×VREF×CSS(nF)/ISS. |
| 8 - FB | Feedback input | Monitors output via resistor divider; 805mV reference enables precise VOUT setting; sensitive to noise - route away from SW and GND loops. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 110mΩ/45mΩ MOSFETs | Eliminates external power switches and associated gate-drive complexity; reduces BOM count and layout area in space-constrained designs. |
| Constant-on-time (COT) control | Delivers <10µs load transient response without loop compensation components - simplifies design and improves stability across input/output variations. |
| Programmable soft-start | Prevents inrush current into pre-biased loads and large output capacitors; avoids system brownouts during power-up sequencing. |
| Power-good (PG) with hysteresis | Provides deterministic, noise-immune power-rail validation signal for microcontroller reset assertion or downstream enable sequencing. |
| Hiccup-mode over-current protection | Automatically recovers from short-circuit faults without manual reset - maintains system uptime in intermittent fault conditions. |
| Pre-bias start-up support | Allows safe startup into externally powered outputs (e.g., backplane rails), preventing reverse current flow through internal FET body diodes. |
Applications
| Flat-Panel Display Power | Game Console Core Rail |
|---|---|
|
Use Scenario: Generating 3.3V/2A main logic rail for LCD controller and timing ICs in 24V-powered monitors. IC Role / Device Role / Timing Role: Primary synchronous buck regulator with COT control ensuring stable voltage under dynamic pixel-refresh loads. Use Value: 95% peak efficiency at 19VIN/3.3VOUT minimizes thermal stress in sealed enclosures; PG signal synchronizes display initialization sequence. |
Use Scenario: Supplying 1.2V/2A core voltage to ARM-based SoC in handheld gaming devices with 12V battery input. IC Role / Device Role / Timing Role: High-efficiency step-down converter operating in PSM mode during idle states and PWM mode under gameplay load bursts. Use Value: 200µA quiescent current extends battery life in standby; 650kHz switching allows use of ultra-low-profile 2.2µH inductor. |
| Digital Set-Top Box AVDD | Industrial IoT Sensor Hub |
|
Use Scenario: Providing regulated 5V/2A for HDMI PHY, audio DAC, and USB peripherals in cable/satellite receivers. IC Role / Device Role / Timing Role: Main DC/DC converter with soft-start and PG enabling clean power-up of multi-chip subsystems. Use Value: Programmable SS prevents brownout during simultaneous peripheral wake-up; OVP protects downstream 5V logic from transient overvoltage. |
Use Scenario: Delivering 2.5V/2A to mixed-signal sensor fusion module (ADC, IMU, BLE SoC) powered from 24V factory bus. IC Role / Device Role / Timing Role: Robust point-of-load regulator with thermal shutdown and hiccup-mode OCP for unattended operation. Use Value: 150°C thermal shutdown with 20°C hysteresis ensures graceful degradation in high-ambient environments; SOT583 footprint fits dense PCB layouts. |
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 |
|---|---|---|---|
| MP2338GQ-Z | Lower 1.5A rating, 3MHz fixed-frequency PWM control, QFN-12 package | Better suited for ultra-compact, high-density designs where size outweighs current demand | Select when board space is constrained and peak load ≤1.5A; trade-off is reduced heavy-load efficiency vs. MP2392GTL-P's COT architecture. |
| TPS54202DRCT | 2A rating, 400kHz–2.5MHz adjustable frequency, external compensation, SON-10 package | Requires external loop compensation but offers greater flexibility in EMI tuning and transient optimization | Choose when precise frequency synchronization or custom loop shaping is required; MP2392GTL-P offers simpler implementation with no compensation needed. |
Compared with MP2338GQ-Z, MP2392GTL-P delivers higher current and superior light-load efficiency via PSM; versus TPS54202DRCT, it eliminates compensation design effort and reduces component count, though with less frequency agility.
Availability
MP2392GTL-P is available at Aetrix Electronics and suitable for flat-panel displays, game consoles, digital set-top boxes, and industrial sensor hubs requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MP2392GTL-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 MP2392 belongs to MPS's high-frequency synchronous buck converter product line, designed specifically for space-constrained consumer and industrial applications demanding high efficiency, fast transient response, and minimal external components.
FAQ
What is the minimum recommended input capacitance for MP2392GTL-P?
The datasheet specifies ≥22µF ceramic input capacitance (X5R/X7R dielectric) placed directly at the IN pin. This value ensures sufficient RMS ripple current handling and limits input voltage ripple to <100mV under 2A load at 19VIN, preventing instability and reducing conducted EMI.
Does MP2392GTL-P support forced PWM mode?
No - MP2392GTL-P operates exclusively in automatic PSM/PWM mode. At light loads, it enters pulse-frequency modulation (PFM) to maintain high efficiency; it transitions seamlessly to fixed-frequency COT PWM above critical current (~0.5A at 12VIN/3.3VOUT). No external pin or register enables forced PWM.
Can MP2392GTL-P start up into a pre-biased output?
Yes - MP2392GTL-P supports monotonic pre-bias start-up. When VOUT is already present at power-on, the internal circuitry refreshes the BST capacitor and charges the SS node only after detecting valid VFB and BST voltage, preventing reverse current and output collapse.
What is the maximum output capacitor value allowed for stable soft-start?
Per Equation (13) in the datasheet, CO_MAX ≈ (ILIM_AVG − IOUT) × TSS / VOUT. With typical 7.3µA SS current and 3.3V output, a 470µF output cap is acceptable for 2A loads and 10ms soft-start; exceeding ~1000µF risks failure to reach regulation before SS completes.
How is the bootstrap capacitor selected for MP2392GTL-P?
A 1µF X5R/X7R ceramic capacitor is recommended between BST and SW pins. It must withstand ≥6.3V rating and provide ≥1µF capacitance after DC bias derating. Placement must minimize loop inductance - connect directly between pins using short, wide traces and adjacent ground vias.
Is MP2392GTL-P qualified for automotive applications?
No - MP2392GTL-P is specified for industrial and commercial temperature ranges (−40°C to +125°C junction), but lacks AEC-Q100 qualification, automotive-grade screening, or extended reliability testing. For automotive use, consider MPS's pin-compatible MPQ2392 series.
What causes PG to go low after initial assertion?
PG pulls low if VFB drops below 87% VREF (e.g., due to overload or short), rises above 120% VREF (OVP event), or if EN deactivates, input UVLO triggers, or thermal shutdown occurs. PG remains low until all fault conditions clear and soft-start re-executes.
MP2392GTL-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):
- 4.2V
- Voltage - Input (Max):
- 24V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 13V
- Current - Output:
- 2A
- Frequency - Switching:
- 650kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-583
MP2392GTL-P FAQ
1.How can I place an order for MP2392GTL-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2392GTL-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 MP2392GTL-P reliable?
The price and inventory of MP2392GTL-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2392GTL-P is usually 5 days.
3.What payment methods are accepted for MP2392GTL-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2392GTL-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2392GTL-P?
MP2392GTL-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2392GTL-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 MP2392GTL-P?
For technical support, including MP2392GTL-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2392GTL-P requirements.
6.How does Aetrix verify that MP2392GTL-P is sourced from the original manufacturer or authorized distributors?
All MP2392GTL-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 MP2392GTL-P meets industry standards.
7.What is the process for return or replacement of MP2392GTL-P?
All MP2392GTL-P units undergo pre-shipment inspection (PSI). If there is an issue with MP2392GTL-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 MP2392GTL-P part is unused and in its original packaging.
Return procedure for MP2392GTL-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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