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Monolithic Power Systems Inc. MP2363DN-LF
- Part No.:
- MP2363DN-LF
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
MP2363DN-LF.pdf
- Description:
- IC REG BUCK ADJ 3A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,483
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Product details
Overview
MP2363DN-LF from Monolithic Power Systems is a non-synchronous step-down DC/DC converter IC with integrated 100mΩ high-side N-channel MOSFET, delivering 3A continuous output current across 4.75V–27V input range and adjustable 0.92V–21V output voltage. It operates at fixed 365kHz switching frequency, features cycle-by-cycle over-current protection, thermal shutdown, and programmable soft-start-used in battery chargers and distributed power systems.
For engineers reviewing the MP2363DN-LF datasheet, MP2363DN-LF pinout, MP2363DN-LF application, or MP2363DN-LF equivalent, key selection criteria include its 3A output capability, SOIC8N exposed-pad package thermal performance (θJA = 50°C/W), 20µA shutdown current, and compatibility with low-ESR ceramic output capacitors without external diode requirement.
Technical Context
The MP2363DN-LF employs current-mode control architecture with internal transconductance error amplifier (GEA = 500–1120 µA/V) and slope compensation for stable loop dynamics. Its functional block includes a 365kHz oscillator, high-side gate driver powered via BS–SW bootstrap capacitor, and feedback regulation referenced to precise 0.92V FB threshold.
It integrates cycle-by-cycle current limiting (4.5–5.7A trip), under-voltage lockout (2.54V rising threshold with 210mV hysteresis), and thermal shutdown at 160°C. The device requires no external rectifier diode due to internal synchronous rectification omission and relies on external Schottky diode (e.g., B330A) in the buck topology.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 3A continuous - supports industrial load rails and battery charging stages without derating at +25°C ambient. |
| Input Voltage Range | 4.75V to 27V - enables direct integration into 12V/24V automotive and industrial bus systems. |
| Switching Frequency | 365kHz (±50kHz) - balances EMI filtering complexity and inductor size; fixed-frequency simplifies EMI compliance. |
| Feedback Reference | 0.92V ±2% - sets output accuracy; allows precise 3.3V/5V/12V generation using standard resistor dividers. |
| High-Side RDS(ON) | 100mΩ - limits conduction loss at 3A, enabling >90% efficiency at mid-load with proper layout. |
| Shutdown Current | 20µA - minimizes standby power in always-on systems such as smart sensors or IoT edge nodes. |
| Thermal Shutdown | 160°C - protects against sustained overload or poor PCB copper area; auto-recovery after cooldown. |
Pinout & Package
MP2363DN-LF uses an 8-pin SOICN package with exposed thermal pad (backside), JEDEC MS-012 BA variant. The exposed pad must be soldered to Pin 4 (GND) for optimal thermal performance (θJC = 10°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 BS | Bootstrap Supply Input | Connects to SW via ≥10nF capacitor to generate gate drive voltage >VIN for high-side MOSFET. |
| 2 IN | Main Power Input | Accepts 4.75–27V; requires local bulk + high-frequency ceramic bypassing to suppress switching noise. |
| 3 SW | Switch Node | Drives external LC filter; carries high di/dt; must be routed short and wide to minimize EMI and losses. |
| 4 GND | Power & Signal Ground | Primary return path; exposed pad connects here for thermal conduction and low-impedance grounding. |
| 5 FB | Voltage Feedback Input | Senses output via resistive divider; 0.92V reference enables accurate regulation down to sub-1V outputs. |
| 6 COMP | Compensation Node | Transconductance error amplifier output; accepts RC network to stabilize control loop at ~36.5kHz crossover. |
| 7 EN | Enable Control | Logic-level input: >2.71V enables, <0.9V disables; open-drain compatible; 0.9–1.5V threshold ensures noise immunity. |
| 8 SS | Soft-Start Timing | Capacitor-to-GND sets startup ramp time (tSS = 45 × CSS ms); prevents input inrush and output overshoot. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 100mΩ High-Side MOSFET | Eliminates need for external high-side switch; reduces BOM count and layout area in compact 3A converters. |
| Stable with Ceramic Output Capacitors | Supports low-ESR ceramic caps (e.g., 22µF ×2 X5R) without oscillation-enables smaller, more reliable output filters. |
| Programmable Soft-Start | Capacitor-controlled ramp (e.g., 100nF → 4.5ms) prevents input surge and ensures monotonic VOUT rise during power-up. |
| Current-Mode Control | Provides inherent line/load transient response improvement and simplified loop compensation vs. voltage-mode designs. |
| Wide Input Range (4.75–27V) | Accommodates 12V nominal systems with brownout margin and 24V industrial buses without pre-regulation. |
Applications
| Battery Charging Stage | Distributed Power System |
|---|---|
|
Use Scenario: Regulating 12V bus to 5V/3.3V for Li-ion charger ICs in portable medical devices. IC Role / Device Role / Timing Role: Primary step-down regulator providing stable, low-noise intermediate rail to charge management IC. Use Value: 3A output headroom supports fast-charge protocols; 20µA shutdown extends battery life in standby mode. |
Use Scenario: Generating isolated 3.3V logic supply from 24V factory automation backplane. IC Role / Device Role / Timing Role: Non-isolated point-of-load converter powering microcontrollers and I/O peripherals. Use Value: Fixed 365kHz frequency enables predictable EMI filtering; SOIC8N exposed pad sustains 3A load at +70°C ambient. |
| Pre-Regulator for Linear Regulators | Industrial Sensor Node Power |
|
Use Scenario: Reducing 24V to 8V before LDO to minimize thermal dissipation in precision analog signal chains. IC Role / Device Role / Timing Role: Efficient pre-regulator lowering dropout stress on downstream linear regulators. Use Value: 95% peak efficiency at 3A reduces heat buildup; adjustable output allows optimal LDO headroom selection. |
Use Scenario: Powering low-power wireless sensor modules (BLE/Zigbee) operating from 12V field bus. IC Role / Device Role / Timing Role: Main DC/DC converter supplying regulated 3.3V to RF SoC and analog front-end. Use Value: 20µA shutdown current enables multi-year battery life; UVLO prevents erratic operation during brownout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2338DJ-LF-Z | Pin-compatible successor with improved efficiency (96% @3A), lower RDS(ON) (75mΩ), and enhanced thermal performance (θJA = 40°C/W). | Designed for new designs requiring higher reliability and longer lifetime; supports same SOIC8N footprint. | Select MP2338DJ-LF-Z for new designs-MP2363DN-LF is marked "Not Recommended for New Designs" per MPS documentation. |
| LM2678SD-3.3/NOPB | Fixed 3.3V output, 5A rating, 260kHz switching, external MOSFET required; larger solution size and lower efficiency (~88%) at 3A. | Used where fixed-output simplicity outweighs efficiency and board space constraints; lacks programmable soft-start. | Choose LM2678SD-3.3/NOPB only if fixed 3.3V output and legacy design continuity are mandatory. |
Compared with MP2363DN-LF, MP2338DJ-LF-Z delivers higher efficiency and better thermal metrics in identical packaging, while LM2678SD-3.3/NOPB trades integration and efficiency for fixed-output convenience and TI's long-term supply assurance.
Availability
MP2363DN-LF is available at Aetrix Electronics and suitable for battery chargers, distributed power systems, and pre-regulator circuits requiring stable component supply across industrial temperature range (–40°C to +85°C).
Supply support for MP2363DN-LF 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, headquartered in California with global design and support centers.
The MP2363 belongs to MPS's non-synchronous buck converter product line, engineered for cost-sensitive, medium-current DC/DC applications where integration, thermal robustness, and ease of use are prioritized over ultra-high efficiency.
FAQ
Is MP2363DN-LF RoHS compliant?
Yes, MP2363DN-LF meets RoHS Directive 2011/65/EU requirements. The "-LF" suffix explicitly denotes lead-free, halogen-free packaging with matte tin plating on leads and compliant molding compound.
What is the minimum recommended input capacitance for MP2363DN-LF?
A minimum 10µF low-ESR ceramic capacitor is recommended at the IN pin, placed as close as possible to Pins 2 and 4. For 24V input at 3A load, a 22µF–47µF X5R/X7R ceramic plus 0.1µF high-frequency bypass is typical to limit RMS ripple current and input voltage droop.
Can MP2363DN-LF operate without an external Schottky diode?
No. As a non-synchronous buck converter, MP2363DN-LF requires an external Schottky diode (e.g., B330A, SK34) between SW and GND to provide freewheeling current path during high-side switch off-time. Omitting it causes catastrophic failure.
How does the BS pin function, and what capacitor value is required?
The BS pin supplies gate drive voltage to the internal high-side MOSFET via a bootstrap capacitor connected between BS and SW. A minimum 10nF ceramic capacitor (X7R, 16V rating) is required; 22nF is recommended for margin under heavy load and high duty cycle conditions.
Why is MP2363DN-LF labeled "Not Recommended for New Designs"?
MPS officially deprecated MP2363DN-LF in favor of MP2338DJ-LF-Z, which offers superior specs: lower RDS(ON), higher efficiency, tighter FB tolerance (±1%), and extended lifetime support. MP2363DN-LF remains available for legacy repair and continuity but lacks roadmap commitment.
What thermal pad connection is required for SOIC8N package?
The exposed thermal pad on the SOIC8N package must be soldered directly to Pin 4 (GND) using a solid copper pour connected to a minimum 1-inch² inner-layer thermal plane. Failure to connect the pad degrades θJA from 50°C/W to >80°C/W and risks thermal shutdown under 3A load.
Does MP2363DN-LF support adjustable frequency?
No. MP2363DN-LF has a fixed internal oscillator set to 365kHz (typical), with ±13.7% variation over temperature and process. Frequency cannot be adjusted externally-unlike some competitors offering RT pin configuration.
MP2363DN-LF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.75V
- Voltage - Input (Max):
- 27V
- Voltage - Output (Min/Fixed):
- 0.92V
- Voltage - Output (Max):
- 21V
- Current - Output:
- 3A
- Frequency - Switching:
- 365kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC-EP
MP2363DN-LF FAQ
1.How can I place an order for MP2363DN-LF through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2363DN-LF 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 MP2363DN-LF reliable?
The price and inventory of MP2363DN-LF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2363DN-LF is usually 5 days.
3.What payment methods are accepted for MP2363DN-LF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2363DN-LF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2363DN-LF?
MP2363DN-LF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2363DN-LF 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 MP2363DN-LF?
For technical support, including MP2363DN-LF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2363DN-LF requirements.
6.How does Aetrix verify that MP2363DN-LF is sourced from the original manufacturer or authorized distributors?
All MP2363DN-LF 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 MP2363DN-LF meets industry standards.
7.What is the process for return or replacement of MP2363DN-LF?
All MP2363DN-LF units undergo pre-shipment inspection (PSI). If there is an issue with MP2363DN-LF, 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 MP2363DN-LF part is unused and in its original packaging.
Return procedure for MP2363DN-LF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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