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Monolithic Power Systems Inc. MP2467DN-LF
- Part No.:
- MP2467DN-LF
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
MP2467DN-LF.pdf
- Description:
- IC REG BUCK ADJ 2.5A 8SOICE
- Quantity:
- Payment:
- Shipping:
Inventory:4,795
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Product details
Overview
MP2467DN-LF from Monolithic Power Systems is a fixed-frequency, non-synchronous step-down DC/DC converter with integrated 150mΩ high-side MOSFET, delivering up to 2.5A output current across a 6V–36V input range and adjustable 0.8V–30V output. It features 500kHz switching frequency, 100µA quiescent current, internal soft-start, and precision current limit without external sense resistor-designed for automotive power rails, industrial distributed supplies, and battery-powered embedded systems.
For engineers reviewing the MP2467DN-LF datasheet, MP2467DN-LF pinout, MP2467DN-LF application, or MP2467DN-LF equivalent, key selection criteria include VIN UVLO thresholds (2.7–3.3V), thermal shutdown behavior (150°C trip), BST capacitor routing constraints, COMP compensation network design, and SOIC8E package thermal performance under 2.5A continuous load.
Technical Context
The MP2467DN-LF operates in peak-current-mode control with a fixed 500kHz oscillator and cycle-by-cycle current limiting. Its error amplifier delivers 200V/V gain and 60µA/V transconductance, with COMP clamped between 0.9V and 2.0V during regulation.
Internal bootstrap charging supports high-side MOSFET drive; BST-to-SW capacitor must be placed adjacent to pins 8 and 1. The device implements frequency foldback at light load, 1.5ms internal soft-start ramp, and 300mV EN hysteresis (1.2V down / 1.5V up) for reliable enable/disable sequencing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2.5A continuous - defines maximum sustained load capability before thermal shutdown or current limit activation |
| Input Voltage Range | 6V to 36V - supports 12V/24V automotive batteries and industrial 24V/36V rails without pre-regulation |
| Switching Frequency | 500kHz ±20% - enables compact magnetics and EMI filtering while balancing conduction vs. switching losses |
| Quiescent Current | 100µA - ensures >1-year standby runtime in coin-cell–powered IoT sensors or remote controllers |
| Feedback Reference | 0.8V ±2.4% - sets output voltage via external resistor divider; tolerance directly impacts VOUT accuracy |
| High-Side RDS(ON) | 150mΩ - determines conduction loss at full load: ~940mW at 2.5A, dictating SOIC8E thermal pad layout requirements |
| Thermal Shutdown | 150°C with 15°C hysteresis - protects die during overload or poor PCB heatsinking; recovery occurs at ≤135°C |
Pinout & Package
The MP2467DN-LF is housed in a thermally enhanced SOIC8E (SOIC-8 with exposed thermal pad), optimized for PCB copper area attachment to dissipate up to 2.5W at +25°C ambient (θJA = 50°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Switch Node | Drain of internal high-side MOSFET; connects to inductor and Schottky diode cathode - requires minimal loop area to suppress ringing |
| 2 EN | Enable Input | Logic-level control with 1.2V/1.5V hysteresis; floating default enables device via 1µA internal pull-up |
| 3 COMP | Compensation Node | Error amplifier output; external RC network here sets loop stability, phase margin (>45°), and transient response |
| 4 FB | Feedback Input | Senses divided output voltage; compared to 0.8V reference to regulate VOUT - resistor divider must sink ≥5µA |
| 5 GND | Power Ground | Analog and power return; must tie to thermal pad and output capacitor ground with low-inductance path |
| 6 RSET | Bias Setting | Connects to 200kΩ resistor to set internal bias currents - critical for startup timing and current limit accuracy |
| 7 VIN | Input Supply | Powers control circuitry and bootstrap regulator; requires local 10µF ceramic decoupling adjacent to pin |
| 8 BST | Bootstrap Supply | Floating supply for high-side gate driver; bypassed to SW via 0.1µF ceramic capacitor - placement is layout-critical |
Key Features
| Feature | Design Value |
|---|---|
| Ceramic-capacitor stable control loop | Eliminates need for tantalum or electrolytic output caps - reduces board space and improves reliability in wide-temp environments |
| Precision current limit (no sense resistor) | Enables accurate 2.9–3.5A overcurrent protection without added BOM cost, trace resistance, or power loss |
| Internal soft-start (1.5ms) | Prevents output overshoot and inrush stress on downstream ICs during power-up - no external timing component required |
| Frequency foldback at light load | Reduces switching/gate-drive losses below ~200mA, sustaining >85% efficiency down to 10mA load |
| UVLO with 300mV hysteresis | Ensures clean startup/shutdown sequencing across varying battery voltages - prevents brown-out oscillation |
Applications
| Automotive Infotainment Power | Industrial PLC I/O Module |
|---|---|
Use Scenario: Powering 3.3V microcontroller, CAN transceiver, and display backlight from 12V vehicle battery with cold-crank tolerance. IC Role / Device Role / Timing Role: Primary buck regulator providing regulated 3.3V rail with UVLO tracking battery sag and thermal shutdown during under-hood temperature excursions. Use Value: 6V–36V input range survives load-dump transients; 100µA IQ extends head-unit standby time; SOIC8E thermal pad enables conduction cooling on metal-core PCB. |
Use Scenario: Generating isolated 5V logic supply for digital I/O expansion cards in 24V industrial control cabinets. IC Role / Device Role / Timing Role: Non-isolated point-of-load converter delivering 2.5A at 5V with fast transient response to handle solenoid actuation spikes. Use Value: 500kHz switching allows <10µH inductors; current-mode control rejects input ripple from shared 24V bus; RSET pin enables precise current limit calibration per module. |
| Portable Medical Monitor | Smart Building Sensor Node |
Use Scenario: Battery-backed 1.8V supply for ARM Cortex-M4 MCU and analog front-end in handheld ECG device. IC Role / Device Role / Timing Role: High-efficiency step-down regulator operating from Li-ion (3.0–4.2V) or 2xAA (2.0–3.2V) with programmable UVLO. Use Value: 100µA IQ extends single-charge runtime beyond 72 hours; adjustable 0.8V–30V output supports multiple sensor voltage domains; soft-start prevents ADC reference disturbance at power-on. |
Use Scenario: Powering Zigbee SoC, temperature/humidity sensor, and BLE radio from two AA alkaline cells (1.0–3.2V). IC Role / Device Role / Timing Role: Wide-input buck converter enabling direct battery connection without boost-preconditioning, supporting 10-year deployment. Use Value: 6V min VIN accommodates fresh alkaline stack; frequency foldback maintains >90% efficiency at µA loads; EN pin enables MCU-controlled deep-sleep mode with <1µA system leakage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2451DT-LF-Z | 1.5A output, 2MHz switching, same SOIC8E package but no RSET pin or frequency foldback | Better suited for space-constrained designs needing smaller inductors; less efficient below 100mA due to fixed 2MHz operation | Select when footprint compatibility is critical and load rarely exceeds 1.5A with tight size budget |
| LM2678SD-5.0/NOPB | 5A output, 260kHz, TO-263 package, external compensation, no integrated soft-start or BST capacitor | Higher current and lower EMI, but requires larger magnetics and additional components for startup control | Select for high-power industrial supplies where thermal mass and EMI compliance outweigh board-area constraints |
Compared with MP2467DN-LF, MP2451DT-LF-Z trades output current and light-load efficiency for higher switching frequency and smaller passives, while LM2678SD-5.0/NOPB offers greater current headroom and lower EMI at the cost of layout complexity and missing integrated features like soft-start and BST management.
Availability
MP2467DN-LF is available at Aetrix Electronics and suitable for automotive infotainment power, industrial PLC I/O modules, and portable medical monitors requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for MP2467DN-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, with design centers in the US, China, and Taiwan and global manufacturing partnerships.
The MP2467 belongs to MPS's high-voltage DC/DC converter product line, engineered for robust operation in automotive, industrial, and battery-powered applications where wide input range, low IQ, and integrated MOSFETs reduce system complexity.
FAQ
What is the minimum input voltage required for reliable startup?
The MP2467DN-LF has a VIN UVLO rising threshold of 3.0V ±0.3V. Reliable startup requires VIN ≥3.3V to exceed the upper threshold, and the device remains enabled down to 2.7V. Below 2.7V, it shuts down with 0.35V hysteresis, preventing oscillation during brown-out conditions.
Can the MP2467DN-LF operate with a 3.3V output and 5V input?
No - the minimum input voltage is 6V per datasheet specifications. At VIN = 5V, the internal bootstrap circuit cannot sustain sufficient gate drive for the high-side MOSFET, causing erratic switching or dropout. For 3.3V output from 5V input, use a synchronous buck like MP2143 or linear regulator.
How is the current limit set, and is it adjustable?
The current limit is fixed at 2.9–3.5A (typ. 3.2A) and is not externally adjustable. It is implemented via internal current-sense MOSFET and comparator - no external resistor or programming pin is provided. This ensures consistent overcurrent protection without calibration.
What is the purpose of the RSET pin, and what resistor value is required?
RSET sets internal bias currents affecting soft-start timing and current limit accuracy. A 200kΩ resistor must be connected from RSET to GND. Omitting this resistor causes undefined startup behavior and degraded current limit tolerance per datasheet Section 8.2.
Does the MP2467DN-LF support forced PWM mode, or does it pulse-skip at light load?
The MP2467DN-LF automatically enters pulse-skipping mode below ~200mA to maintain high efficiency. It does not support forced PWM or external mode control - no pin or register exists to disable frequency foldback or enforce continuous conduction mode.
What is the recommended layout practice for the BST and SW pins?
Place a 0.1µF X7R ceramic capacitor directly between BST (pin 8) and SW (pin 1), with traces shorter than 2mm and no vias. Route SW to the inductor with a wide, low-inductance copper pour, and keep the Schottky diode cathode adjacent to SW to minimize high-di/dt loop area.
Is the MP2467DN-LF RoHS-compliant and lead-free?
Yes - the "-LF" suffix denotes lead-free, RoHS-compliant packaging. All MP2467DN-LF units meet JEDEC J-STD-020 moisture sensitivity level 3 and are qualified for reflow soldering per IPC/JEDEC J-STD-020D.2.
MP2467DN-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):
- 6V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 30V
- Current - Output:
- 2.5A
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOICE
MP2467DN-LF FAQ
1.How can I place an order for MP2467DN-LF through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2467DN-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 MP2467DN-LF reliable?
The price and inventory of MP2467DN-LF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2467DN-LF is usually 5 days.
3.What payment methods are accepted for MP2467DN-LF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2467DN-LF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2467DN-LF?
MP2467DN-LF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2467DN-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 MP2467DN-LF?
For technical support, including MP2467DN-LF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2467DN-LF requirements.
6.How does Aetrix verify that MP2467DN-LF is sourced from the original manufacturer or authorized distributors?
All MP2467DN-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 MP2467DN-LF meets industry standards.
7.What is the process for return or replacement of MP2467DN-LF?
All MP2467DN-LF units undergo pre-shipment inspection (PSI). If there is an issue with MP2467DN-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 MP2467DN-LF part is unused and in its original packaging.
Return procedure for MP2467DN-LF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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