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Monolithic Power Systems Inc. MP2454GH-Z
- Part No.:
- MP2454GH-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
MP2454GH-Z.pdf
- Description:
- IC REG BUCK ADJ 600MA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,974
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Product details
Overview
MP2454GH-Z from Monolithic Power Systems is a frequency-programmable (350 kHz to 2.3 MHz), non-synchronous step-down DC/DC converter with integrated 200 mΩ high-side MOSFET, delivering up to 0.6 A output current across a 3.3 V to 36 V input range. It features current-mode control, internal compensation, and power-good signaling-designed for automotive cold-crank and battery-powered systems requiring stable 3.3 V or 5 V rails.
For engineers reviewing the MP2454GH-Z datasheet, MP2454GH-Z pinout, MP2454GH-Z application, or MP2454GH-Z equivalent, key selection criteria include its 3.5 µA shutdown current, programmable POK delay, 60 µA operating quiescent current, thermal shutdown at 170 °C, and compatibility with ceramic output capacitors without external compensation.
Technical Context
The MP2454GH-Z implements peak-current-mode control with slope compensation and cycle-by-cycle current limiting, enabling fast transient response and stable operation across wide load and input voltage ranges. Its oscillator supports frequency foldback during start-up or short-circuit conditions to prevent inductor current runaway.
It integrates a 3.5 V internal regulator for biasing core circuitry, a bootstrap driver with UVLO protection for high-duty-cycle operation, and an open-drain POK output with user-programmable delay via external capacitor on POKDL-enabling precise power sequencing in multi-rail systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.3 V to 36 V - supports automotive battery transients including cold-crank (down to ~3.3 V) and load-dump conditions. |
| Output Current | 0.6 A continuous - sufficient for powering microcontrollers, sensors, and interface ICs in embedded systems. |
| Switching Frequency | 350 kHz to 2.3 MHz - programmable via resistor on FREQ pin; enables compact magnetics and EMI optimization. |
| Feedback Reference | 0.8 V ±2% - sets output voltage accuracy; allows precise 3.3 V, 5 V, or custom rail generation with resistor divider. |
| Quiescent Current | 60 µA - enables >1-year battery life in always-on IoT nodes powered by coin cells or Li-SOCl₂. |
| Shutdown Current | 3.5 µA - ensures minimal leakage during system sleep modes without compromising wake-up responsiveness. |
| Thermal Shutdown | 170 °C with 25 °C hysteresis - provides fault-tolerant operation under sustained overload or poor PCB thermal design. |
Pinout & Package
MP2454GH-Z is housed in an MSOP-10 EP package with exposed thermal pad, optimized for high-power density and thermal performance in space-constrained automotive and industrial PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Switch node | High-current drain of internal MOSFET; connects to inductor and Schottky catch diode anode. |
| 2 VIN | Main input supply | Powers internal regulator and high-side gate driver; requires local 10 µF ceramic decoupling. |
| 3 GND | Power ground | Reference for all analog blocks; must be connected directly to exposed pad for thermal and noise integrity. |
| 4 SS | Soft-start control | Sources 1.8 µA to external capacitor; controls output ramp rate and inrush current limiting. |
| 5 FB | Feedback input | Compares output voltage divider ratio against 0.8 V reference to regulate output. |
| 6 POKDL | Power-good delay | Accepts capacitor to program POK assertion delay (e.g., 100 nF = ~120 ms), enabling sequencing. |
| 7 POK | Open-drain power-good | Asserts high when VOUT is within ±10%; requires external pull-up to ≤5 V for system monitoring. |
| 8 FREQ | Frequency programming | Resistor-to-GND sets switching frequency; 49.9 kΩ yields ~1 MHz for balanced efficiency/size. |
| 9 EN/SYNC | Enable & sync input | Logic-level enable (1 V low / 1.8 V high); also accepts external clock (350 kHz–2.3 MHz) for synchronization. |
| 10 BST | Bootstrap supply | Charges external 0.1 µF capacitor between BST and SW; enables high-side MOSFET drive above VIN. |
Key Features
| Feature | Design Value |
|---|---|
| Internal 200 mΩ MOSFET | Eliminates external high-side switch and reduces BOM count while maintaining >90% efficiency at 0.6 A. |
| Programmable POK delay | Enables precise power sequencing across multiple rails using only one external capacitor on POKDL. |
| Low-dropout mode | Supports 100% duty cycle operation down to VIN ≈ VOUT + 0.5 V, critical for automotive cold-crank survival. |
| Frequency foldback | Reduces switching frequency under light load or fault conditions to suppress inductor current runaway and improve reliability. |
| Stable with ceramic capacitors | Removes need for electrolytic or tantalum output caps-reducing size, cost, and aging-related failure risk. |
Applications
| Automotive Infotainment Power | Industrial Sensor Node Supply |
|---|---|
Use Scenario: Powering ARM Cortex-M7 MCU, CAN transceiver, and display backlight in head unit under 12 V battery with cold-crank dips to 3.5 V. IC Role / Device Role / Timing Role: Primary 3.3 V buck regulator with POK signaling to enable MCU reset hold until rail stabilization. Use Value: Low 3.5 µA shutdown current preserves battery during vehicle off-state; 100% duty cycle maintains regulation during cranking. | Use Scenario: Providing regulated 5 V supply to LoRaWAN sensor node powered by primary lithium thionyl chloride cell. IC Role / Device Role / Timing Role: High-efficiency step-down converter enabling >10-year battery life via 60 µA quiescent current and pulse-skipping light-load mode. Use Value: Ceramic-capacitor compatibility eliminates electrolytic aging; internal compensation reduces layout sensitivity. |
| Medical Portable Monitor Rail | Test Equipment Auxiliary Supply |
Use Scenario: Generating isolated 3.3 V logic rail from 24 V industrial bus in handheld patient monitor with strict EMI limits. IC Role / Device Role / Timing Role: Synchronized buck converter (via EN/SYNC) to align switching edges with master clock and reduce conducted emissions. Use Value: 2.3 MHz max frequency enables use of small 2.2 µH inductors; frequency foldback prevents startup overshoot. | Use Scenario: Powering FPGA configuration circuitry and ADC reference in benchtop signal analyzer requiring clean, sequenced supplies. IC Role / Device Role / Timing Role: Secondary buck stage with programmable POK delay to coordinate power-up after main 12 V rail reaches regulation. Use Value: External soft-start capacitor (SS pin) ensures monotonic VOUT ramp; internal compensation avoids tuning effort. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMR14006XDDAR | Fixed 600 kHz frequency; no POK delay programming; higher 100 µA IQ; requires external compensation. | Lacks programmable sequencing support; less suitable for multi-rail cold-crank systems. | Choose if fixed-frequency EMI profile is preferred and POK timing flexibility is unnecessary. |
| TPS54302DDCR | Higher 3 A rating; 2.5 V min VIN; no cold-crank optimized dropout; 10 µA shutdown current. | Better for higher-current loads but unsuitable for sub-3.3 V cold-crank operation. | Prefer when output current >0.6 A is required and input never drops below 2.5 V. |
Compared with LMR14006XDDAR and TPS54302DDCR, MP2454GH-Z uniquely balances ultra-low shutdown current, cold-crank capability, and programmable power sequencing-making it optimal for battery-backed and automotive-grade 0.6 A point-of-load conversion.
Availability
MP2454GH-Z is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial sensor nodes, and portable medical monitors requiring stable component supply, long-lifecycle availability, and RoHS-compliant packaging.
Supply support for MP2454GH-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 over two decades of innovation in DC/DC conversion, motor drivers, and LED lighting controllers.
The MP2454 belongs to MPS's high-voltage buck converter product line, engineered specifically for automotive, industrial, and battery-powered applications demanding wide VIN range, low IQ, and robust thermal behavior.
FAQ
What is the minimum input voltage required for MP2454GH-Z to regulate a 3.3 V output?
The MP2454GH-Z supports dropout operation down to ~3.3 V input due to its 100% duty cycle capability and low RDS(on) (200 mΩ). Under cold-crank conditions, it maintains regulation as long as BST–SW voltage remains above 2.5 V-verified down to 3.3 V at full load with proper bootstrap design.
Can MP2454GH-Z synchronize to an external clock while in shutdown?
No. Synchronization is only active when EN/SYNC is pulled above 1.8 V and the device is enabled. During shutdown (EN < 1 V), the internal oscillator and sync circuitry are disabled; applying a clock signal has no effect until the part exits shutdown.
How does the MP2454GH-Z achieve >90% efficiency at light loads?
It enters pulse-skipping mode when the COMP voltage falls below the internal sleep threshold, disabling switching cycles to reduce gate drive and switching losses. Combined with 60 µA quiescent current, this extends battery runtime significantly in intermittent-operation systems.
Is an external bootstrap diode required for reliable operation?
An external Schottky bootstrap diode is recommended for applications with duty cycles >65% or switching frequencies >2 MHz, as it improves BST capacitor recharge efficiency and prevents UVLO-induced dropout-especially critical in high-VIN, low-VOUT configurations.
What is the maximum allowable output capacitance for MP2454GH-Z?
No hard upper limit exists, but large ceramic output capacitance (>100 µF) may cause excessive inrush current during soft-start. The SS pin current (1.8 µA) and typical 0.8 V reference set practical limits; designs exceeding 22 µF should verify startup behavior with scope capture of VOUT and IL.
Does MP2454GH-Z support adjustable current limit?
No. The current limit is internally fixed and cycle-by-cycle, scaling with output voltage (e.g., ~1.8 A at nominal VOUT, decreasing during start-up or short-circuit). It is not externally adjustable-providing inherent short-circuit protection without additional components.
How is thermal performance affected by the MSOP-10 EP exposed pad connection?
Connecting the exposed pad to a solid GND plane reduces θJA from 55 °C/W to ≤40 °C/W in typical 4-layer PCB layouts. Failure to solder or route the pad degrades thermal resistance by >35%, risking thermal shutdown at >0.4 A continuous load in still-air environments.
MP2454GH-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- 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):
- 3.3V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- 600mA
- Frequency - Switching:
- 2.3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP-EP
MP2454GH-Z FAQ
1.How can I place an order for MP2454GH-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2454GH-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 MP2454GH-Z reliable?
The price and inventory of MP2454GH-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2454GH-Z is usually 5 days.
3.What payment methods are accepted for MP2454GH-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2454GH-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2454GH-Z?
MP2454GH-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2454GH-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 MP2454GH-Z?
For technical support, including MP2454GH-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2454GH-Z requirements.
6.How does Aetrix verify that MP2454GH-Z is sourced from the original manufacturer or authorized distributors?
All MP2454GH-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 MP2454GH-Z meets industry standards.
7.What is the process for return or replacement of MP2454GH-Z?
All MP2454GH-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP2454GH-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 MP2454GH-Z part is unused and in its original packaging.
Return procedure for MP2454GH-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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