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Monolithic Power Systems Inc. MP2349GG-Z
- Part No.:
- MP2349GG-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 11-VFQFN
- Datasheet:
-
MP2349GG-Z.pdf
- Description:
- IC REG 6.5A
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MP2349GG-Z from Monolithic Power Systems is a fully integrated, synchronous buck converter delivering up to 6.5A continuous output current with 4.5V–24V input range, 700kHz fixed switching frequency, and adaptive constant-on-time (COT) control. It integrates low-RDS(ON) MOSFETs (36mΩ HS / 12mΩ LS), supports mode selection (FCCM/PFM/USM), and targets compact, high-efficiency power rails in space-constrained applications like security cameras and flat-panel displays.
For engineers reviewing the MP2349GG-Z datasheet, MP2349GG-Z pinout, MP2349GG-Z application, or MP2349GG-Z equivalent, key selection considerations include its QFN-11 (2mm×2mm) package footprint, 105μA quiescent current, remote differential sensing capability, DC auto-tune loop for load regulation, and triple-mode operation for optimizing efficiency across light-to-heavy loads.
Technical Context
The MP2349GG-Z implements adaptive COT control with internal ramp compensation, enabling stable regulation with ceramic output capacitors without external compensation. Its valley-current OCP uses the LS-FET's RDS(ON) as a current-sense element, with a 6–9A programmable limit range and automatic retry thermal shutdown at 150°C.
Mode selection is implemented via the MODE pin: >3.2V enables FCCM for ripple-sensitive applications; grounded enables PFM without USM for lowest light-load IQ; floating enables PFM+USM to maintain fSW >20kHz. The DC auto-tune loop dynamically adjusts timing to maintain tight line/load regulation across 4.5V–24V input and 0.6V–13V output ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 24V - Supports wide industrial and consumer input rails including 5V, 12V, 19V, and 24V systems without external pre-regulation. |
| Continuous Output Current | 6.5A - Delivers full rated current with ≤35°C case temperature rise on standard 4-layer PCB per datasheet EV2349-G-00A test board. |
| Quiescent Current | 105μA - Enables battery-backed or always-on systems (e.g., security camera standby) to achieve multi-year runtime. |
| Switching Frequency | 700kHz (±100kHz) - Balances EMI performance and inductor size; supports 2.2μH inductors with <3mΩ DCR for optimal efficiency. |
| Internal MOSFET RDS(ON) | HS: 36mΩ / LS: 12mΩ - Reduces conduction loss by >40% vs. discrete FET solutions, enabling high efficiency (>95%) at 3.3V/6.5A. |
| Feedback Reference Voltage | 600mV (±10mV) - Allows precise output setting from 0.6V to 13V using standard resistor dividers; supports remote sense for ±0.5% load regulation. |
| Protection Features | OCP (valley-current), OVP (130% VREF), UVP (dual-threshold: 75%/50% VREF), thermal shutdown (150°C) - Provides robust fault recovery without external circuitry. |
Pinout & Package
MP2349GG-Z is housed in a thermally enhanced QFN-11 (2mm × 2mm, 0.5mm pitch) package with exposed thermal pad. Pin 1 is marked by a dot; top marking includes "JC" product code, year code "Y", and lot number "LLL".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VIN | Power input supply | Accepts 4.5V–24V; requires ≥2-layer wide trace + multiple vias to PGND for low-impedance decoupling of high di/dt currents. |
| 2,3,4 PGND | Power ground return | Direct Kelvin connection to internal power FET sources; must be tied to PCB ground plane with minimum 4 vias for thermal and EMI performance. |
| 5 MODE | Operating mode select | Digital input: >3.2V = FCCM; GND = PFM-no-USM; floating = PFM+USM - sets switching behavior without external logic. |
| 6 SW | Power switch node | Connects to inductor and BST capacitor; requires short, wide copper pour to minimize ringing and shoot-through risk during dead-time transitions. |
| 7 BST | Bootstrap supply | Forms floating gate drive for HS-FET; requires 0.1μF X7R ceramic capacitor between SW and BST, placed adjacent to IC. |
| 8 VCC | Internal LDO output | Supplies control logic; requires ≥1μF X7R/X5R ceramic cap placed within 2mm of pin to stabilize gate drivers under transient load. |
| 9 AGND | Signal ground reference | Kelvin sense point for FB and EN; must be routed separately from PGND and connected only at single-point star ground near FB divider. |
| 10 FB | Output voltage feedback | Resistor-divider tap point; trace must avoid SW node coupling; layout sensitivity demands direct routing with no vias or stubs. |
| 11 EN | Enable/disable control | Active-high digital input; internal 1MΩ pull-down; max 4.5V rating; supports automatic start-up via resistor divider from VIN. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive COT control | Eliminates need for external compensation network while maintaining stability with POSCAP/ceramic output caps - reduces BOM count and layout complexity. |
| DC auto-tune loop + remote differential sense | Delivers ±0.5% load regulation over 0–6.5A and ±0.2% line regulation over 4.5–24V input - critical for precision analog or FPGA core rails. |
| Selectable ultrasonic mode (USM) | Maintains fSW >20kHz during light-load PFM operation - prevents audible coil whine in consumer audio/video equipment. |
| Integrated soft-start & output discharge | 1.7ms typical tSS prevents inrush; internal discharge path pulls VOUT to GND when disabled - avoids back-powering downstream circuits. |
| Valley-current OCP with RDS(ON) sensing | Uses internal LS-FET resistance for current monitoring - eliminates external sense resistor, saving area and cost while preserving accuracy. |
Applications
| Security Cameras | Portable xDSL Devices |
|---|---|
|
Use Scenario: Powering image sensor, ISP, and Wi-Fi SoC in IP surveillance cameras operating from 12V PoE or 24V AC/DC adapters. IC Role / Device Role / Timing Role: Primary 3.3V/6.5A buck regulator with remote sense for stable core rail under dynamic CPU and sensor load transients. Use Value: Adaptive COT delivers <10μs response to 3A→6A load steps; FCCM mode ensures low output ripple (<20mVpp) for noise-sensitive image pipelines. |
Use Scenario: Compact DSL modem/router requiring efficient 5V/3.3V rails from 12V wall adapter in thermally constrained plastic enclosure. IC Role / Device Role / Timing Role: Single-chip 5V/3.3V step-down solution supporting both active data transmission and deep-sleep states. Use Value: 105μA IQ and PFM+USM mode enable <100μA system standby current; QFN-11 footprint saves >30% board area vs. legacy SO-8 converters. |
| Digital Set-Top Boxes | Flat-Panel Displays |
|
Use Scenario: Powering ARM-based media processor, HDMI PHY, and memory subsystem in 4K STB with strict EMI limits. IC Role / Device Role / Timing Role: Main 1.1V/4A and 3.3V/2A dual-rail source with spread-spectrum-capable 700kHz fSW. Use Value: Fixed-frequency PWM operation simplifies EMI filter design; internal soft-start prevents HDMI hot-plug reset glitches during power-up. |
Use Scenario: Backlight driver auxiliary rail and TCON (timing controller) supply in 24-inch LCD monitor powered from 19V input. IC Role / Device Role / Timing Role: High-efficiency 5V/3A rail for display interface ICs with tight regulation under variable video content load. Use Value: DC auto-tune loop maintains <±15mV output deviation across 0–3A load; thermal shutdown protects against sustained overloads in sealed bezels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2338GQ-Z | Lower IOUT (4A), same 4.5–24V input, 120μA IQ, QFN-10 (3×3mm) | Smaller thermal footprint but higher θJA (90°C/W); less suitable for 6.5A continuous loads | Select when board space allows larger package and peak load <4A; not drop-in due to pinout and current derating. |
| RT7297BZSP | 6A IOUT, 4.5–26V input, 150μA IQ, 600kHz fSW, SOP-8 package | Larger footprint, no USM mode, requires external bootstrap diode and compensation | Choose for cost-sensitive designs where QFN assembly is unavailable; expect ~3% lower efficiency at 3.3V/6A due to higher RDS(ON). |
Compared with MP2349GG-Z, MP2338GQ-Z trades current capability for marginally lower IQ and different package geometry, while RT7297BZSP sacrifices integration density and ultrasonic operation for broader input voltage and mature SOP-8 manufacturability - neither matches the combined 6.5A/QFN-11/USM feature set.
Availability
MP2349GG-Z is available at Aetrix Electronics and suitable for security cameras, portable xDSL devices, and flat-panel displays requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MP2349GG-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 power management ICs, with over 20 years of expertise in DC/DC conversion, motor drivers, and LED lighting controllers.
The MP2349 belongs to MPS's high-density synchronous buck converter product line, designed specifically for space-constrained, efficiency-critical applications in consumer electronics, networking, and industrial automation where minimal external components and robust protection are mandatory.
FAQ
What is the recommended inductor for MP2349GG-Z in a 3.3V/6.5A application?
For 3.3V/6.5A operation, MPS recommends the MPL-AL6050-220 or MPL-AL4020-220 series shielded power inductors (2.2μH, ≤3mΩ DCR). These inductors are optimized for the MP2349's 700kHz switching frequency and valley-current OCP algorithm, ensuring stable operation with <10% peak-to-peak inductor current ripple and minimal thermal rise under full load.
Can MP2349GG-Z operate with only ceramic output capacitors?
Yes - the MP2349GG-Z's internal compensation and adaptive COT architecture are specifically validated for stable operation with ceramic output capacitors alone. The datasheet confirms stability with ≥44μF X5R/X7R ceramics (e.g., 4×10μF 0805) and no external type-II or type-III compensation required, reducing component count and PCB area.
How does the MODE pin affect efficiency at light load?
When MODE is grounded (PFM-no-USM), efficiency peaks at ~88% at 10mA load but may produce audible noise below 20kHz. When floated (PFM+USM), efficiency drops ~2–3% at 10mA but maintains fSW >20kHz, eliminating coil whine - a critical trade-off for consumer audio/video products.
What is the maximum allowable input voltage for continuous operation?
The absolute maximum VIN rating is 26V, but the recommended operating maximum is 24V per the datasheet's "Recommended Operating Conditions." Sustained operation above 24V risks exceeding the 26V absolute limit during line transients and may trigger OVP or degrade long-term reliability of internal MOSFETs and gate drivers.
Does MP2349GG-Z support pre-biased output startup?
Yes - the MP2349GG-Z features pre-bias startup protection. If the FB node senses a pre-charged output voltage exceeding the rising internal VREF during startup, the HS- and LS-FETs remain off until VREF ramps above the sensed VOUT, preventing reverse current flow and potential damage to downstream circuitry.
What thermal performance can be expected on a 2-layer PCB?
On a standard 2-layer board (1oz copper, 100mm² thermal pad area), the MP2349GG-Z achieves ~55°C case temperature rise at 6.5A/3.3V (≈85% efficiency). For full-rated continuous current, MPS specifies ≥4-layer construction with internal ground/power planes and ≥4 thermal vias under the exposed pad to meet the 3.6W PD(MAX) limit.
Is there an evaluation board available for MP2349GG-Z?
Yes - the EV2349-G-00A evaluation board is available from MPS and authorized distributors. It implements a 3.3V/6.5A output with recommended layout, component selection (including MPL-AL6050-220 inductor), and test points for SW, FB, and MODE signals - enabling rapid validation of efficiency, transient response, and thermal performance.
MP2349GG-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 11-VFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 11-QFN (2x2)
MP2349GG-Z FAQ
1.How can I place an order for MP2349GG-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2349GG-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 MP2349GG-Z reliable?
The price and inventory of MP2349GG-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2349GG-Z is usually 5 days.
3.What payment methods are accepted for MP2349GG-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2349GG-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2349GG-Z?
MP2349GG-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2349GG-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 MP2349GG-Z?
For technical support, including MP2349GG-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2349GG-Z requirements.
6.How does Aetrix verify that MP2349GG-Z is sourced from the original manufacturer or authorized distributors?
All MP2349GG-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 MP2349GG-Z meets industry standards.
7.What is the process for return or replacement of MP2349GG-Z?
All MP2349GG-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP2349GG-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 MP2349GG-Z part is unused and in its original packaging.
Return procedure for MP2349GG-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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