My Inquiry
My Account
Monolithic Power Systems Inc. MPQ2454GQ-Z
- Part No.:
- MPQ2454GQ-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
MPQ2454GQ-Z.pdf
- Description:
- IC REG BUCK ADJ 600MA 10QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,239
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MPQ2454GQ-Z from Monolithic Power Systems is a 36V, 0.6A AEC-Q100 Grade 1 qualified synchronous step-down DC/DC converter with integrated 200mΩ high-side MOSFET, programmable 350kHz–2.3MHz switching frequency, and 60μA quiescent current. It delivers regulated output in automotive cold-crank (down to 3.3V input) and battery-powered systems using ceramic output capacitors and internal compensation.
For engineers reviewing the MPQ2454GQ-Z datasheet, MPQ2454GQ-Z pinout, MPQ2454GQ-Z application, or MPQ2454GQ-Z equivalent, key selection criteria include its 3.5μA shutdown current, programmable POK delay, frequency foldback for short-circuit protection, and QFN-10 (3mm×3mm) thermally enhanced package with exposed pad.
Technical Context
The MPQ2454GQ-Z implements current-mode control with cycle-by-cycle peak current limiting and slope compensation, enabling fast transient response and stable operation across wide VIN (3.3V–36V) and load ranges. Its oscillator supports external resistor programming or synchronization to an external clock (350kHz–2.3MHz), with frequency foldback triggered by low FB voltage to prevent inductor current runaway during start-up or short circuit.
It integrates a 3.5V internal regulator powered from VIN, a 5V bootstrap driver with active refresh logic for 100% duty-cycle operation, and an open-drain POK output with user-programmable delay via capacitor on POKDL. Thermal shutdown activates at 170°C with 25°C hysteresis, and UVLO thresholds are 2.9V (rising) and 2.65V (falling).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.3V to 36V - supports automotive battery rails including cold-crank (down to ~3.3V) without dropout |
| Output Current | 0.6A continuous - limited by internal MOSFET RDS(on) (200mΩ) and thermal design in QFN-10 package |
| Switching Frequency | 350kHz to 2.3MHz - programmable via resistor on FREQ pin; enables compact magnetics and EMI optimization |
| Quiescent Current | 60μA - enables always-on functionality in battery-backed automotive modules |
| Feedback Voltage | 0.8V ±2% - sets output via resistive divider; enables precise 3.3V, 5V, or custom VOUT configurations |
| Shutdown Current | 3.5μA - minimizes battery drain in vehicle sleep modes |
| Power Good Threshold | ±10% of nominal VOUT - provides reliable system power sequencing and fault detection |
Pinout & Package
MPQ2454GQ-Z is housed in a thermally optimized QFN-10 (3mm × 3mm) package with exposed thermal pad soldered to PCB ground plane for efficient heat dissipation. Pin numbering follows standard top-view orientation with Pin 1 marked by dot or bevel.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Switch Node | Drives external inductor; requires low-VF Schottky diode to GND for spike suppression |
| 2 VIN | Main Input Supply | Powers internal circuitry and high-side switch; requires local ceramic decoupling capacitor |
| 3 GND | Power Ground | Reference for all signals; exposed pad must connect directly to PCB GND plane |
| 4 SS | Soft-Start Control | Sources 1.8µA to external capacitor; controls output ramp rate and inrush current |
| 5 FB | Feedback Input | Monitors output via resistor divider; regulates VOUT to 0.8V reference |
| 6 POKDL | POK Delay Programming | Accepts capacitor to GND; sets POK assertion delay (e.g., 100nF ≈ 100ms) |
| 7 POK | Open-Drain Power Good | Asserts high when VOUT is within ±10%; requires external pull-up to ≤5V |
| 8 FREQ | Frequency Set/Sync Input | Resistor-to-GND sets fSW; accepts external clock (350kHz–2.3MHz) for synchronization |
| 9 EN/SYNC | Enable/Synchronization | Logic-high (>1.8V) enables; logic-low (<1V) shuts down; floating = disabled |
| 10 BST | Bootstrap Supply | Charges external BST capacitor from SW node; enables high-side gate drive |
Key Features
| Feature | Design Value |
|---|---|
| Low Quiescent Current | 60μA operating / 3.5μA shutdown - extends battery life in always-on telematics and ADAS sensors |
| Automotive Cold-Crank Support | 100% duty-cycle capability with active BST refresh - maintains regulation down to 3.3V input at full load |
| Internal Compensation | Single-loop current-mode architecture - eliminates external compensation network, reducing BOM count and layout sensitivity |
| Programmable Power Good | Capacitor-adjustable POK delay (via POKDL) - prevents false resets during output soft-start or line transients |
| Stable with Ceramic Capacitors | No ESR requirement - enables use of small, reliable, low-ESR MLCCs for output filtering |
Applications
| Automotive Infotainment Power | ADAS Camera Module Supply |
|---|---|
|
Use Scenario: Powers SoC, display interface, and audio codec in head-unit systems with 12V/24V battery input and cold-crank events. IC Role / Device Role / Timing Role: Primary 3.3V/5V step-down regulator with POK signaling for system boot sequencing and brown-out detection. Use Value: Maintains regulation during 4.5V cold-crank dips; 60μA IQ enables low-power standby mode between ignition cycles. |
Use Scenario: Supplies image sensor and ISP in rear-view or surround-view cameras exposed to wide ambient temperature (-40°C to +105°C). IC Role / Device Role / Timing Role: High-reliability point-of-load converter with AEC-Q100 Grade 1 qualification and thermal shutdown. Use Value: Delivers stable 1.8V/2.8V outputs under vibration and thermal cycling; QFN-10 package supports compact camera PCB layout. |
| Industrial IoT Sensor Node | Electric Powertrain Control Unit |
|
Use Scenario: Powers ultra-low-power microcontroller, LoRa/Wi-Fi transceiver, and analog front-end in battery-operated remote monitoring nodes. IC Role / Device Role / Timing Role: Primary buck converter with programmable frequency and soft-start for controlled wake-up and RF burst transmission. Use Value: 3.5μA shutdown current extends 10-year battery life; frequency foldback prevents overcurrent during sensor self-test. |
Use Scenario: Generates auxiliary 5V rail for MCU, CAN transceiver, and gate drivers in battery management and motor control modules. IC Role / Device Role / Timing Role: Robust secondary supply with synchronized switching to reduce EMI coupling into sensitive analog and communication circuits. Use Value: EN/SYNC pin allows timing alignment with main inverter clock; 36V rating withstands load-dump transients up to 40V. |
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-Z | 0.5A output, fixed 2.2MHz frequency, no POKDL or frequency sync | Lacks programmable POK delay and external clock sync; suitable only for simpler, fixed-frequency designs | Select when cost and footprint are prioritized over flexibility in sequencing and EMI control |
| TPS54340QDGQRQ1 | 3.5A output, 100kHz–2.5MHz sync range, higher IQ (146μA), no AEC-Q100 Grade 1 | Higher current but larger QFN-10 package (4.5mm×3.5mm); not qualified for extended temperature automotive use | Select when >0.6A load or wider sync range is required, and AEC-Q100 Grade 1 is not mandated |
Compared with MPQ2454GQ-Z, MPQ2451GQ-AEC1-Z trades programmability and precision features for lower cost and smaller solution size, while TPS54340QDGQRQ1 offers higher current and broader sync range but lacks Grade 1 qualification and has higher quiescent current-making MPQ2454GQ-Z optimal for AEC-Q100-compliant, low-IQ, flexible automotive power rails.
Availability
MPQ2454GQ-Z is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and industrial IoT sensor nodes requiring stable component supply with AEC-Q100 compliance and long-term lifecycle support.
Supply support for MPQ2454GQ-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 core expertise in DC/DC conversion, motor drivers, and LED lighting controllers.
The MPQ2454 product line targets automotive-grade power management, designed specifically for harsh-environment applications requiring AEC-Q100 qualification, cold-crank resilience, and ultra-low quiescent current.
FAQ
What is the minimum input voltage required for MPQ2454GQ-Z to regulate 3.3V output at 600mA?
At 600mA load and 1MHz switching frequency, MPQ2454GQ-Z maintains regulation within 5% of 3.3V down to approximately 3.35V input-verified per Figure 4(a) in the datasheet. This enables operation during automotive cold-crank events where battery voltage drops below 6V.
Can MPQ2454GQ-Z operate without an external bootstrap diode?
Yes-it includes an internal bootstrap regulator that charges the BST capacitor from VIN through a PMOS pass transistor. An external Schottky diode (e.g., 1N4148) is optional and recommended only for high-duty-cycle (>65%) or >2MHz applications to reduce quiescent current and improve light-load efficiency.
How is the power good (POK) delay time calculated for MPQ2454GQ-Z?
POK delay is set by capacitor CPOKDL on Pin 6: tDL = (CPOKDL × 1.2V) / IPOKDL, where IPOKDL = 1.8µA typical. For example, a 100nF capacitor yields ~67ms delay. This prevents premature POK assertion during soft-start or transient recovery.
Does MPQ2454GQ-Z require external compensation components?
No-MPQ2454GQ-Z uses internally compensated current-mode control. The error amplifier, slope compensation, and current-sense circuitry are fully integrated, eliminating the need for external compensation networks and simplifying design validation.
What thermal performance can be expected from the QFN-10 package in still air?
With the exposed pad soldered to a 2-layer 1in² copper area, θJA is 50°C/W. At 0.6A output and 12V input, typical power dissipation is ~0.3W, resulting in ~15°C junction-to-ambient rise-well within the -40°C to +125°C operating range.
Is frequency synchronization mandatory for stable operation?
No-synchronization is optional. The device operates stably using its internal oscillator (programmed via FREQ resistor). Sync is used only to align switching edges with other converters to reduce beat frequencies and simplify EMI filter design.
What happens during thermal shutdown, and how does recovery work?
When die temperature exceeds 170°C, the device disables switching and pulls POK low. It remains latched off until temperature falls below 145°C (25°C hysteresis), then automatically resumes normal operation-no external reset required.
MPQ2454GQ-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 10-VFDFN 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-QFN (3x3)
MPQ2454GQ-Z FAQ
1.How can I place an order for MPQ2454GQ-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ2454GQ-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 MPQ2454GQ-Z reliable?
The price and inventory of MPQ2454GQ-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ2454GQ-Z is usually 5 days.
3.What payment methods are accepted for MPQ2454GQ-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ2454GQ-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ2454GQ-Z?
MPQ2454GQ-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ2454GQ-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 MPQ2454GQ-Z?
For technical support, including MPQ2454GQ-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ2454GQ-Z requirements.
6.How does Aetrix verify that MPQ2454GQ-Z is sourced from the original manufacturer or authorized distributors?
All MPQ2454GQ-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 MPQ2454GQ-Z meets industry standards.
7.What is the process for return or replacement of MPQ2454GQ-Z?
All MPQ2454GQ-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ2454GQ-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 MPQ2454GQ-Z part is unused and in its original packaging.
Return procedure for MPQ2454GQ-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPQ2454GQ-Z Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
