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Monolithic Power Systems Inc. MPQ2454GH-Z
- Part No.:
- MPQ2454GH-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
MPQ2454GH-Z.pdf
- Description:
- IC REG BUCK ADJ 600MA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,391
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Product details
Overview
MPQ2454GH-Z from Monolithic Power Systems is a frequency-programmable (350kHz–2.3MHz), AEC-Q100 Grade 1 qualified, non-synchronous step-down DC/DC converter with integrated 200mΩ high-side MOSFET, delivering up to 0.6A output current across a 3.3V–36V input range. It features current-mode control, programmable power-good delay, and low-dropout operation for automotive cold-crank support (down to 3.05V at 600mA for 3.3V output).
For engineers reviewing the MPQ2454GH-Z datasheet, MPQ2454GH-Z pinout, MPQ2454GH-Z application, or MPQ2454GH-Z equivalent, this device is selected for battery-powered automotive subsystems, industrial distributed supplies, and high-reliability 12V/24V rail regulation where quiescent current (60μA operating, 3.5μA shutdown), thermal robustness (170°C TSD), and synchronization capability are critical.
Technical Context
The MPQ2454GH-Z implements peak-current-mode PWM control with internal slope compensation and cycle-by-cycle current limiting, enabling fast transient response and stable operation with ceramic output capacitors. Its oscillator supports external resistor programming (RFREQ) and synchronization to an external clock (350kHz–2.3MHz), with frequency foldback during start-up or short-circuit to prevent inductor current runaway.
It integrates a 3.5V internal regulator powered from VIN, a floating bootstrap driver (regulated to ~5V), and a precision 0.8V feedback reference with ±2% tolerance. The open-drain POK output asserts after a user-programmable delay (via capacitor on POKDL) when VOUT remains within ±10% of nominal for ≥20μs, supporting power sequencing in multi-rail systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.3V to 36V - Supports full automotive battery range including cold-crank (down to 3.05V at 600mA for 3.3V output) |
| Output Current | 0.6A continuous - Limited by internal 200mΩ MOSFET RDS(on) and thermal design (θJA = 55°C/W MSOP-10 EP) |
| Switching Frequency | 350kHz to 2.3MHz - Programmable via FREQ pin resistor; enables compact magnetics and EMI optimization |
| Quiescent Current | 60μA - Enables >1-year battery life in always-on automotive modules (e.g., telematics, sensors) |
| Feedback Reference | 0.8V ±2% - Enables precise output voltage setting (e.g., 3.3V via 95.3kΩ/300kΩ divider) with minimal drift over temperature |
| Power Good Accuracy | ±10% window with 4.5% hysteresis - Ensures reliable system reset and sequencing without external monitoring circuitry |
| Shutdown Current | 3.5μA - Minimizes parasitic drain in vehicle-off states, meeting OEM leakage budgets |
Pinout & Package
MPQ2454GH-Z is packaged in MSOP-10 EP (exposed pad), with thermal performance optimized by soldering the exposed pad directly to the PCB ground plane (θJA = 55°C/W, θJC = 12°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Switch Node | High-current output of internal MOSFET; requires low-VF Schottky diode to GND and tight layout to minimize ringing |
| 2 VIN | Input Supply | Primary power input (3.3V–36V); must be decoupled with low-ESR capacitor placed adjacent to pin |
| 3 GND | Ground Reference | System ground return; connects to exposed pad for thermal and EMI performance |
| 4 SS | Soft-Start Control | Capacitor-connected node sourcing 1.8μA; sets controlled VOUT ramp time to prevent inrush and overshoot |
| 5 FB | Feedback Input | Monitors output via resistive divider; 0.8V reference enables accurate regulation independent of load or line variation |
| 6 POKDL | Power-Good Delay | Capacitor-connected node sourcing 1.8μA; programs POK assertion delay to avoid false triggers during transients |
| 7 POK | Open-Drain Power-Good | Active-low indicator pulled to GND when VOUT deviates >±10%; requires external pull-up (≤5V, e.g., 100kΩ) |
| 8 FREQ | Frequency Programming | Resistor-to-GND sets switching frequency (e.g., 49.9kΩ → 1MHz); enables EMI tuning and efficiency optimization |
| 9 EN/SYNC | Enable & Clock Input | Dual-function pin: logic-level enable (1V low / 1.8V high) or external clock sync (350kHz–2.3MHz) |
| 10 BST | Bootstrap Supply | Charges external capacitor (BST–SW) to ~5V; enables high-side gate drive; requires low-ESR ceramic cap |
Key Features
| Feature | Design Value |
|---|---|
| Low Dropout Operation | Supports 100% duty cycle down to VIN = 3.05V (for 3.3V/600mA), enabling regulation during automotive cold-crank events |
| Internal Compensation | Eliminates need for external compensation network, reducing BOM count and layout sensitivity while maintaining stability with ceramic outputs |
| Programmable POK Delay | Capacitor-based timing (POKDL pin) allows precise coordination with downstream LDOs or microcontrollers in multi-rail power sequences |
| Synchronization Capability | EN/SYNC pin accepts external clock (350kHz–2.3MHz), enabling deterministic EMI reduction and multi-converter phase alignment |
| AEC-Q100 Grade 1 Qualification | Rated for −40°C to +125°C junction temperature with full automotive reliability testing (HTOL, TC, UHAST), suitable for engine bay and ADAS applications |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC I/O Power Supply |
|---|---|
|
Use Scenario: Regulating 12V battery input to 3.3V for microcontroller, CAN transceiver, and sensor interface in door module or lighting controller. IC Role / Device Role / Timing Role: Primary step-down regulator providing isolated, sequenced, and monitored 3.3V rail with cold-crank support and <3.5μA shutdown leakage. Use Value: Eliminates need for external POK monitoring or discrete enable logic; reduces total solution size by 30% vs. discrete buck + supervisor IC. |
Use Scenario: Generating stable 5V supply from 24V industrial bus for digital I/O isolators and fieldbus communication ICs in harsh factory environments. IC Role / Device Role / Timing Role: High-efficiency, thermally robust DC/DC converter with wide input range and synchronization for noise-sensitive analog signal chains. Use Value: Maintains >90% efficiency across 10mA–600mA load range; synchronization prevents beat frequencies with adjacent motor drives or Ethernet PHYs. |
| Battery-Powered Telematics Unit | Automotive Infotainment Display Backlight Supply |
|
Use Scenario: Powering GPS/GSM module and MCU in always-on vehicle tracking device powered by Li-ion or lead-acid battery. IC Role / Device Role / Timing Role: Ultra-low-quiescent (60μA) buck converter with programmable soft-start and POK for safe wake-up and brown-out detection. Use Value: Extends battery runtime beyond 1 year in sleep mode; soft-start prevents voltage sag that could reset host processor during wake events. |
Use Scenario: Providing adjustable 5V–12V bias for LED backlight drivers in center-stack display, operating from 12V vehicle battery with cold-crank immunity. IC Role / Device Role / Timing Role: High-input-voltage buck regulator with low dropout and external sync to avoid interference with display pixel clock or audio DAC clocks. Use Value: Delivers clean, ripple-free bias under 6V cold-crank; sync capability eliminates visible banding or audio noise in display/audio subsystems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ2451GQ-AEC1 | 0.5A output, fixed 2.2MHz frequency, no POKDL or sync capability, QFN-10 only | Lacks programmable POK delay and external sync; suited for space-constrained, fixed-frequency designs without sequencing needs | Select when board area is critical and system does not require power sequencing or EMI synchronization. |
| TPS54331DR | 0.6A, 3.5V–28V input, 57μA IQ, no AEC-Q100 qualification, SOIC-8 package | Not automotive-qualified; higher thermal resistance (θJA = 85°C/W) limits power density in sealed enclosures | Select only for non-automotive industrial use where AEC-Q100 is not mandated and SOIC-8 footprint is preferred. |
Compared with MPQ2454GH-Z, MPQ2451GQ-AEC1 trades sequencing flexibility for smaller QFN footprint and lower cost, while TPS54331DR offers similar current but lacks automotive qualification, thermal performance, and integrated POK functionality required for modern vehicle electronics.
Availability
MPQ2454GH-Z is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC power rails, and battery-powered telematics requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle continuity.
Supply support for MPQ2454GH-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 leadership in DC/DC conversion, motor drivers, and LED lighting controllers.
The MPQ2454 belongs to MPS's automotive-grade buck converter product line, designed specifically for demanding 12V/24V vehicle subsystems requiring AEC-Q100 qualification, cold-crank operation, and ultra-low quiescent current.
FAQ
What is the minimum input voltage required for MPQ2454GH-Z to regulate 3.3V at 600mA?
The MPQ2454GH-Z maintains regulation within ±5% of 3.3V down to 3.05V at 600mA load under cold-crank conditions (fS = 1MHz), enabled by its low-dropout mode and active BST refresh circuitry. This is verified per Figure 4(a) in the datasheet and meets ISO 16750-2 Pulse 4 requirements.
Can MPQ2454GH-Z synchronize to an external clock while also using EN/SYNC for enable control?
No-EN/SYNC is a dual-function pin: it operates either as a logic-level enable input (with internal 1.2MΩ pull-down) or as a synchronization input. When an external clock signal (350kHz–2.3MHz) is applied, the device automatically disables enable functionality and locks to the external clock's rising edge.
Is an external bootstrap diode required for reliable operation?
An external bootstrap diode (e.g., 1N4148) is recommended-not required-for high-duty-cycle (>65%) or high-frequency (>2MHz) operation to reduce BST capacitor refresh cycles and lower no-load quiescent current. It is optional for standard 1MHz/3.3V applications.
How is the power-good delay time calculated for MPQ2454GH-Z?
The POK delay time (tDL) is calculated as tDL = (CPOKDL × 1.2V) / 1.8μA, where CPOKDL is the capacitor value in nanofarads. For example, a 100nF capacitor yields ~67ms delay, ensuring POK asserts only after output settles post-soft-start.
Does MPQ2454GH-Z support ceramic output capacitors exclusively?
Yes-the MPQ2454GH-Z is internally compensated and stable with ceramic output capacitors (low ESR), eliminating the need for tantalum or electrolytic types. This reduces board area, improves reliability, and avoids ESR-related aging effects common in automotive applications.
What thermal protection mechanisms are implemented?
The MPQ2454GH-Z features thermal shutdown at 170°C (with 25°C hysteresis) and internal current limiting with cycle-by-cycle protection. During overload, frequency foldback reduces switching losses, while the exposed pad in MSOP-10 EP ensures θJA ≤ 55°C/W on a 4-layer PCB per JESD51-7.
Is MPQ2454GH-Z pin-compatible with other MPQ245x variants?
Yes-MPQ2454GH-Z (MSOP-10 EP) shares identical pinout and footprint with MPQ2454GH and MPQ2454GH-AEC1. However, the -Z suffix denotes tape-and-reel packaging; electrical and thermal specs remain unchanged across these ordering variants.
MPQ2454GH-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):
- 2.9V
- Voltage - Output (Max):
- 36V
- Current - Output:
- 600mA
- Frequency - Switching:
- 2.3MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP-EP
MPQ2454GH-Z FAQ
1.How can I place an order for MPQ2454GH-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ2454GH-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 MPQ2454GH-Z reliable?
The price and inventory of MPQ2454GH-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ2454GH-Z is usually 5 days.
3.What payment methods are accepted for MPQ2454GH-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ2454GH-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ2454GH-Z?
MPQ2454GH-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ2454GH-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 MPQ2454GH-Z?
For technical support, including MPQ2454GH-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ2454GH-Z requirements.
6.How does Aetrix verify that MPQ2454GH-Z is sourced from the original manufacturer or authorized distributors?
All MPQ2454GH-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 MPQ2454GH-Z meets industry standards.
7.What is the process for return or replacement of MPQ2454GH-Z?
All MPQ2454GH-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ2454GH-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 MPQ2454GH-Z part is unused and in its original packaging.
Return procedure for MPQ2454GH-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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