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Monolithic Power Systems Inc. MPQ2314GJ-Z
- Part No.:
- MPQ2314GJ-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
MPQ2314GJ-Z.pdf
- Description:
- IC REG BUCK ADJ 2A TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:2,890
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Product details
Overview
MPQ2314GJ-Z from Monolithic Power Systems is a synchronous step-down DC/DC converter IC delivering 2A continuous output current with 4.5V–24V input range, fixed 500kHz switching frequency, and internal 120mΩ/50mΩ MOSFETs - used for core voltage regulation in notebook I/O rails and flat-panel display power supplies.
For engineers reviewing the MPQ2314GJ-Z datasheet, MPQ2314GJ-Z pinout, MPQ2314GJ-Z application, or MPQ2314GJ-Z equivalent, this device supports AAM light-load mode, EN/SYNC frequency synchronization (200kHz–2MHz), 0.8V feedback reference, thermal shutdown at 150°C, and hiccup-mode OCP - critical for compact, thermally constrained embedded power designs.
Technical Context
The MPQ2314GJ-Z implements peak-current-mode control with an internal 0.8V reference error amplifier and optimized compensation network, enabling stable regulation without external loop components. Its current-sense architecture provides fast transient response and inherent cycle-by-cycle overcurrent protection.
It integrates a floating high-side gate driver powered via bootstrap capacitor (BST pin), with internal UVLO (2.2V rising) on the BST rail and full VIN-range internal 5V bias regulator (VCC). The AAM pin enables programmable transition between PFM and CCM modes using an external resistor to ground.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 24V - supports wide industrial and consumer input rails including 12V/19V adapter inputs. |
| Output Current | 2A continuous - sufficient for powering FPGA I/O banks, DDR memory termination, or SoC auxiliary rails. |
| Switching Frequency | Fixed 500kHz (±220kHz variation) - balances size (inductor/capacitor) and efficiency; sync-capable up to 2MHz. |
| Feedback Reference | 0.791V typical (0.775V–0.807V) - sets output voltage accuracy; enables 0.8V–VIN×D adjustable output via resistor divider. |
| HS/LS RDS(on) | 120mΩ / 50mΩ - reduces conduction loss and improves full-load efficiency (>92% typical at 12V→5V/2A). |
| Quiescent Current | 130–240μA - enables low standby power in always-on subsystems such as USB-C PD controllers or display management ICs. |
| Thermal Shutdown | 150°C with 20°C hysteresis - protects against sustained overload or poor PCB thermal design; recovers at ~130°C. |
Pinout & Package
MPQ2314GJ-Z is housed in an 8-pin TSOT23-8 package (2.9mm × 1.6mm × 0.85mm), optimized for high-density PCB layouts with exposed thermal pad (GND-connected) for enhanced thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - AAM | Advanced Asynchronous Modulation control | Resistor-to-GND sets AAM threshold; determines light-load PFM/CCM transition point for ripple-efficiency trade-off. |
| 2 - IN | Main power input | Accepts 4.5V–24V; requires local 22μF ceramic decoupling; wide trace routing minimizes input ripple and EMI. |
| 3 - SW | Power switch node | Drives external inductor; high di/dt node - must be short, wide, and isolated from analog traces (e.g., FB). |
| 4 - GND | System ground reference | Primary return path for power and feedback; connects to thermal pad; requires multiple vias to inner ground plane. |
| 5 - BST | Bootstrap supply for HS gate driver | Requires 0.1–1μF capacitor to SW; internal charge pump regulates BST voltage; optional external diode improves efficiency at >65% duty cycle. |
| 6 - EN/SYNC | Enable & external clock input | Logic-high (>1.25V) enables operation; external 200kHz–2MHz clock synchronizes switching; clamped to 6.5V internally. |
| 7 - VCC | Bias supply output | Internal 5V regulator (4.6–5.15V); powers internal circuitry; requires 0.1–0.22μF ceramic decoupling close to pin. |
| 8 - FB | Output voltage feedback | Compares divided output against 0.8V reference; T-network recommended for stability; foldback activates below 400mV during fault. |
Key Features
| Feature | Design Value |
|---|---|
| AAM Power Save Mode | Enables automatic PFM operation under light load (<100mA), reducing quiescent current to <1μA and improving efficiency at 10% load. |
| Integrated Power MOSFETs | 120mΩ HS + 50mΩ LS switches eliminate external FETs and drivers - reduces BOM count and layout complexity in space-constrained designs. |
| Frequency Synchronization | EN pin accepts external clock (200kHz–2MHz), enabling noise-sensitive systems (e.g., audio, RF) to avoid interference bands. |
| Hiccup-Mode Overcurrent Protection | Enters periodic restart after output short-circuit detection (FB < 400mV), limiting average fault current and die temperature rise. |
| Internal Soft-Start | 1.5ms typical ramp time prevents output overshoot and inrush current - eliminates need for external soft-start circuitry. |
Applications
| Notebook I/O Power | Digital Set-Top Box |
|---|---|
|
Use Scenario: Regulating 3.3V/2A or 5V/2A rails for USB controller, HDMI PHY, and PCIe endpoint logic in ultra-thin notebooks. IC Role / Device Role / Timing Role: Primary synchronous buck converter providing tightly regulated, low-noise core power with fast transient response to burst I/O activity. Use Value: Internal MOSFETs and 500kHz operation enable <8mm² solution size; AAM mode extends battery runtime during idle states. |
Use Scenario: Generating 1.2V/2A CPU core voltage and 3.3V/2A peripheral rail in cost-sensitive digital broadcast receivers. IC Role / Device Role / Timing Role: High-efficiency step-down regulator supporting dynamic load steps from standby to full decode mode. Use Value: 92% peak efficiency at 12V→3.3V/2A reduces heatsink requirements; hiccup OCP ensures field reliability during ESD-induced shorts. |
| Flat Panel Monitor | Industrial Human-Machine Interface |
|
Use Scenario: Supplying 1.8V/2A logic rail for timing controller (TCON) and 5V/2A backlight driver interface in 24-inch LCD monitors. IC Role / Device Role / Timing Role: Main DC/DC converter with SYNC capability to align switching edges away from video pixel clock harmonics. Use Value: 200kHz–2MHz sync range avoids 60Hz/120Hz flicker artifacts; TSOT23-8 footprint simplifies automated assembly on narrow PCB edge zones. |
Use Scenario: Powering ARM Cortex-M7 microcontroller, CAN transceiver, and isolated ADC in DIN-rail mounted PLC modules. IC Role / Device Role / Timing Role: Robust input-stage buck converter handling 18–32V DC industrial bus with wide-temp operation (−40°C to +125°C). Use Value: −40°C to +125°C operating junction range and 28V absolute max VIN ensure reliability across unregulated 24VDC field wiring; RoHS/lead-free compliance meets industrial safety standards. |
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 |
|---|---|---|---|
| MP2314GJ-Z | Same pinout and electrical specs; MP2314 is automotive-grade (AEC-Q100 Grade 1), with extended temp range (−40°C to +125°C) and enhanced ESD robustness (±8kV HBM). | Suitable for automotive infotainment or ADAS camera power where qualification and long-term reliability are mandatory. | Select MP2314GJ-Z only if AEC-Q100 compliance and higher ESD immunity are required; otherwise MPQ2314GJ-Z offers identical performance at lower cost. |
| TPS562211RHLR | 4.5V–18V input, 2A, 650kHz, integrated 110mΩ/60mΩ FETs; uses D-CAP3 control (no external compensation); smaller 6-pin WSON package. | Lacks AAM mode and SYNC capability; optimized for minimal external components rather than light-load efficiency or EMI control. | Choose TPS562211RHLR when board space is critical and light-load efficiency is secondary; MPQ2314GJ-Z preferred when AAM, SYNC, or 24V input support is needed. |
Compared with MP2314GJ-Z, MPQ2314GJ-Z trades automotive qualification for lower unit cost and identical functional performance in commercial environments; versus TPS562211RHLR, it provides superior light-load efficiency via AAM and broader input range (up to 24V), at the expense of slightly larger package and external compensation flexibility.
Availability
MPQ2314GJ-Z is available at Aetrix Electronics and suitable for notebook I/O power, digital set-top box subsystems, flat panel monitor TCON supplies, and industrial HMI power rails requiring stable component supply, consistent lead times, and full traceability.
Supply support for MPQ2314GJ-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 manufacturing partnerships.
The MPQ2314 belongs to MPS's MPQ series of high-efficiency, integrated-power synchronous buck converters - engineered for space-constrained, thermally demanding applications in computing, consumer, and industrial markets.
FAQ
What is the minimum recommended input capacitance for MPQ2314GJ-Z?
A 22μF X5R/X7R ceramic capacitor placed close to the IN and GND pins is recommended. It must handle ≥1A RMS ripple current - typically achieved with two 10μF 0805 capacitors in parallel. Electrolytic or tantalum types require a parallel 0.1μF ceramic for high-frequency decoupling.
Can MPQ2314GJ-Z operate with an input voltage below 4.5V?
No - the absolute minimum operating input is 4.5V per datasheet specifications. Below this, UVLO prevents startup. The under-voltage lockout rising threshold is 3.9V (VCC-based), but the device requires ≥4.5V on IN to sustain regulation and deliver 2A output.
How does the AAM pin affect light-load efficiency?
The AAM pin sets the COMP voltage threshold that triggers pulse-skipping. Lower AAM voltage (e.g., 0.3V via 48.4kΩ resistor) extends PFM operation to higher loads (~300mA), reducing quiescent current to <1μA. Higher AAM voltage shifts transition earlier, improving transient response but increasing light-load ripple.
Is an external bootstrap diode required for reliable operation?
No - the internal bootstrap circuit functions reliably across all conditions. An external diode (e.g., 1N4148 from VCC to BST) is optional and only beneficial when duty cycle exceeds 65% (e.g., 19V→5V), where it reduces BST capacitor charging losses and improves efficiency by ~0.5%.
What is the maximum achievable output voltage accuracy over temperature and line/load?
The FB reference has ±1.5% tolerance (0.775V–0.807V) over −40°C to +125°C. With 1% resistors in the feedback divider, total output voltage error remains within ±2.2% across full operating range - verified in typical applications with 12V→5V/2A configuration.
Does MPQ2314GJ-Z support forced PWM mode?
No - it does not offer a dedicated FPWM pin or register control. Operation is either AAM (PFM at light load) or CCM (forced by pulling AAM to VCC). For true forced-PWM across all loads, consider MPQ2315 or MPQ2316 variants with MODE pin support.
What PCB layout practices prevent instability in MPQ2314GJ-Z designs?
Three critical practices: (1) Connect IN and GND pins to wide copper pours with ≥4 thermal vias to inner ground plane; (2) Route SW trace short and away from FB/VCC; (3) Place FB divider and compensation components <2mm from FB/VCC/GND pins - deviations cause oscillation or poor transient response.
MPQ2314GJ-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- SOT-23-8 Thin, TSOT-23-8
- 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):
- 24V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 22.8V
- Current - Output:
- 2A
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-8
MPQ2314GJ-Z FAQ
1.How can I place an order for MPQ2314GJ-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ2314GJ-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 MPQ2314GJ-Z reliable?
The price and inventory of MPQ2314GJ-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ2314GJ-Z is usually 5 days.
3.What payment methods are accepted for MPQ2314GJ-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ2314GJ-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ2314GJ-Z?
MPQ2314GJ-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ2314GJ-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 MPQ2314GJ-Z?
For technical support, including MPQ2314GJ-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ2314GJ-Z requirements.
6.How does Aetrix verify that MPQ2314GJ-Z is sourced from the original manufacturer or authorized distributors?
All MPQ2314GJ-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 MPQ2314GJ-Z meets industry standards.
7.What is the process for return or replacement of MPQ2314GJ-Z?
All MPQ2314GJ-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ2314GJ-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 MPQ2314GJ-Z part is unused and in its original packaging.
Return procedure for MPQ2314GJ-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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