My Inquiry
My Account
Monolithic Power Systems Inc. MPQ4468GL-AEC1-P
- Part No.:
- MPQ4468GL-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 16-PowerVQFN
- Datasheet:
-
MPQ4468GL-AEC1-P.pdf
- Description:
- IC REG BUCK ADJ 3.5A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MPQ4468GL-AEC1-P from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified, asynchronous step-down DC/DC converter with integrated 90mΩ high-side MOSFET, delivering up to 3.5A continuous output current across a 3.3V–36V input range. It features programmable switching frequency (350kHz–2.5MHz), 10μA light-load quiescent current, and low-dropout mode for automotive cold-crank support. Used in infotainment power rails and ADAS camera modules requiring stable 5V/3.3V supplies under wide-input transients.
For engineers reviewing the MPQ4468GL-AEC1-P datasheet, MPQ4468GL-AEC1-P pinout, MPQ4468GL-AEC1-P application, or MPQ4468GL-AEC1-P equivalent, key selection criteria include AEC-Q100 qualification, 80ns minimum on-time for high-duty-cycle operation, AAM light-load efficiency mode, thermal shutdown at 170°C, and QFN-16 (3mm×4mm) package compatibility with automotive PCB layout constraints.
Technical Context
The MPQ4468GL-AEC1-P employs peak-current-mode control with internal error amplifier and programmable soft-start, enabling fast transient response and precise output regulation. Its AAM (Advanced Asynchronous Modulation) architecture dynamically scales switching frequency below 350kHz during light load to minimize gate-driving and switching losses.
It integrates synchronous bootstrap refresh logic, supports external clock synchronization with selectable in-phase or 180° out-of-phase alignment, and provides hiccup-mode over-current protection with 4.7A–7.3A current limit threshold that varies with duty cycle and temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.3V to 36V - supports full automotive battery range including cold-crank (3.3V) and load-dump (36V) events. |
| Output Current | 3.5A continuous - sufficient for powering dual-core microcontrollers, image sensors, or CAN transceivers in automotive ECUs. |
| Quiescent Current | 10μA in sleep mode - enables >1-year battery standby in always-on vehicle modules without parasitic drain. |
| Switching Frequency | 350kHz to 2.5MHz - programmable via resistor or external sync clock; allows EMI optimization and small external component selection. |
| Feedback Reference | 0.800V ±1.5% - enables accurate output voltage setting (e.g., 3.3V with 4.64kΩ/1kΩ divider) with minimal drift over -40°C to +125°C. |
| Min On-Time | 80ns - supports high step-down ratios (e.g., 24V→3.3V at 500kHz) without pulse-skipping instability. |
| Thermal Shutdown | 170°C with 20°C hysteresis - ensures robust fault recovery in enclosed automotive enclosures without latch-off. |
Pinout & Package
MPQ4468GL-AEC1-P is housed in a thermally enhanced QFN-16 (3mm × 4mm, 0.5mm pitch) package with exposed thermal pad (PGND-connected) for efficient heat dissipation in automotive under-hood environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PHASE | Synchronization phase select | Logic-high = in-phase sync; logic-low = 180° out-of-phase; must be tied to GND if unused to prevent floating state. |
| 2 VIN | Main power input | Supplies internal control circuitry and high-side switch; requires local 10μF ceramic decoupling to PGND. |
| 3,10 SW | Switch node | Drives external inductor; connects internally to high-side MOSFET drain and BST capacitor negative terminal. |
| 4,9 PGND | Power ground | High-current return path for MOSFET and inductor; must be connected via multiple vias to inner-layer copper pour. |
| 5 EN | Enable control | Active-high enable with 1.05V threshold and 120mV hysteresis; supports controlled power sequencing in multi-rail systems. |
| 6 SYNC | External clock input | Accepts 350kHz–2.5MHz square wave; external clock must exceed RFREQ-set frequency by ≥250kHz for reliable locking. |
| 7 PG | Power-good indicator | Open-drain output asserting high when VOUT is within ±10% of target; includes 30μs deglitch filter for noise immunity. |
| 8 BIAS | External bias supply | Optional 5V–18V auxiliary supply reducing internal LDO loss; improves efficiency >5% at high VIN/VOUT ratios. |
| 11 BST | Bootstrap supply | Connects to SW via 0.1μF ceramic capacitor; powers high-side gate driver and enables 100% duty cycle operation. |
| 12 VCC | Internal bias rail | Regulated ~5V supply for control logic; requires ≥1μF decoupling to AGND near pin for stable startup. |
| 13 AGND | Analog ground | Reference for FB, SS, FREQ, and error amplifier; must be separated from PGND and joined at single point near VCC capacitor. |
| 14 SS | Soft-start timing | 10μA current source charges external capacitor; sets monotonic VOUT ramp time and limits inrush current into downstream capacitance. |
| 15 FB | Voltage feedback input | Compares divided output against 0.8V reference; trace routing must avoid noise coupling and vias to maintain regulation accuracy. |
| 16 FREQ | Frequency programming | Resistor-to-GND sets fSW: 180kΩ = 500kHz, 82kΩ = 1MHz, 27kΩ = 2.5MHz; tolerance directly impacts loop bandwidth stability. |
Key Features
| Feature | Design Value |
|---|---|
| AAM light-load efficiency mode | Reduces switching frequency below 350kHz at <10mA load, cutting IQ to 10μA and maintaining >80% efficiency at 100μA output. |
| Low-dropout operation | Supports 100% duty cycle down to VIN = VOUT + 0.3V, enabling stable 3.3V output during 3.3V cold-crank events. |
| Programmable soft-start | External capacitor sets ramp time from 0 to full output; prevents inrush current spikes into large bulk capacitance (e.g., 1000μF). |
| Hiccup-mode over-current protection | Shuts down for 10ms after OCP trigger, then retries - limits average short-circuit current to <100mA and prevents thermal runaway. |
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +125°C junction operation with HTOL, TC, UHAST, and ESD testing per automotive reliability standards. |
Applications
| Infotainment Head Unit Power | ADAS Camera Module Supply |
|---|---|
|
Use Scenario: Powers SoC, display interface, and audio codec in automotive head units with 12V/24V battery input and strict EMI limits. IC Role / Device Role / Timing Role: Primary 5V/3.3V buck regulator with sync capability to align switching edges with display pixel clock and reduce beat-frequency noise. Use Value: 500kHz–2.2MHz frequency programming avoids AM radio band (530–1710kHz); AAM mode maintains >85% efficiency at standby current (1mA). |
Use Scenario: Supplies 3.3V to CMOS image sensor and ISP in rear-view or surround-view cameras mounted in exterior housings. IC Role / Device Role / Timing Role: High-reliability step-down converter operating continuously across -40°C to +105°C ambient with cold-crank dropout support. Use Value: 170°C thermal shutdown with 20°C hysteresis prevents latch-up in sealed enclosures; 10μA sleep current extends battery backup runtime. |
| Body Control Module (BCM) | Telematics Control Unit (TCU) |
|
Use Scenario: Generates 3.3V for CAN FD transceivers, LIN controllers, and EEPROM in centralized body electronics with variable load profiles. IC Role / Device Role / Timing Role: Always-on power rail with programmable soft-start and PG signal for safe microcontroller reset sequencing. Use Value: PG output provides system-level power-good confirmation with ±10% window and 30μs filtering - eliminates false resets from transient ripple. |
Use Scenario: Powers LTE modem, GNSS receiver, and secure MCU in cellular-connected vehicle gateways requiring long-term field reliability. IC Role / Device Role / Timing Role: AEC-Q100 qualified primary DC/DC with BIAS pin option to improve efficiency during high-VIN (24V) LTE transmission bursts. Use Value: BIAS connection reduces internal power dissipation by >30% at VIN=24V/VOUT=3.3V, lowering case temperature rise by 12°C at 3.5A load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar asynchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480-Q1 | Synchronous design with 4.5A rating; higher light-load IQ (25μA); no AAM mode; requires external bootstrap diode. | Better efficiency above 200mA; unsuitable for ultra-low-IQ battery backup scenarios. | Select when higher continuous current or synchronous efficiency at medium loads is prioritized over standby IQ. |
| TPS543B20 | Dual-phase synchronous controller; supports 12V input only; requires external FETs and complex loop compensation. | Targeted at high-current server-grade applications; lacks AEC-Q100 qualification and automotive thermal specs. | Choose only for non-automotive industrial designs needing >10A output with digital PMBus interface. |
Compared with LM61480-Q1 and TPS543B20, MPQ4468GL-AEC1-P uniquely balances AEC-Q100 Grade 1 compliance, 10μA sleep IQ, and integrated high-side FET in a compact QFN-16 - making it optimal for cost-sensitive, space-constrained automotive modules where standby power and cold-crank performance are critical.
Availability
MPQ4468GL-AEC1-P is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and body control units requiring stable component supply with full AEC-Q100 traceability and extended temperature support.
Supply support for MPQ4468GL-AEC1-P 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 power management ICs, with core expertise in DC/DC conversion, motor drivers, and LED lighting controllers.
The MPQ4468 product line delivers AEC-Q100 qualified buck converters optimized for automotive subsystems demanding ultra-low quiescent current, wide input range, and robust thermal performance in harsh environments.
FAQ
What is the purpose of the BIAS pin, and when should it be used?
The BIAS pin accepts an external 5V–18V supply to power the internal gate driver and bias circuitry, bypassing the internal LDO. Use it when VIN exceeds 12V and VOUT is ≤5V to reduce power dissipation by up to 30%, lower thermal rise, and improve full-load efficiency-especially critical in sealed automotive enclosures.
How does the PHASE pin affect synchronization behavior?
The PHASE pin selects whether the internal oscillator locks in-phase or 180° out-of-phase with the external SYNC signal. Driving PHASE high enables in-phase alignment; pulling it low selects 180° offset. This feature allows interleaving with other converters to reduce input/output ripple and EMI peaks-essential in multi-rail infotainment systems.
Can MPQ4468GL-AEC1-P operate with VIN = VOUT during cold-crank?
Yes. The device supports 100% duty cycle operation in low-dropout mode, enabling stable 3.3V output even when VIN drops to 3.3V during cold-crank. This is achieved via internal control loop adaptation and does not require external components-unlike many competitors requiring external LDOs or boost assist.
What is the recommended layout practice for PGND and AGND separation?
PGND and AGND must be kept as separate copper pours on the PCB, joined at a single point near the VCC decoupling capacitor. PGND carries high di/dt switching currents and must connect directly to the exposed thermal pad via ≥4 thermal vias; AGND serves analog references (FB, SS, FREQ) and must be routed away from noisy SW traces to avoid regulation errors.
Does the device support forced PWM mode, or is it strictly AAM-only?
The MPQ4468GL-AEC1-P operates exclusively in AAM (discontinuous conduction + pulse-skipping) at light loads and transitions automatically to fixed-frequency peak-current-mode PWM above ~100mA. There is no user-controllable forced-PWM mode; however, increasing switching frequency (e.g., to 2.2MHz) narrows the AAM operating range and extends PWM dominance to lower loads.
How is over-current protection triggered and recovered?
OCP triggers when sensed high-side current exceeds the programmed limit (4.7A–7.3A, dependent on duty cycle and temperature). Upon trip, the device enters hiccup mode: shuts down for ~10ms, then attempts restart. Recovery is automatic after three successful start cycles or when load fault clears-no external reset required.
What is the maximum allowable thermal resistance θJA for reliable operation at 3.5A?
On a standard 4-layer JEDEC board (EVQ4468-L-00A), θJA is 41°C/W. To maintain TJ ≤125°C at 3.5A and VIN=12V, the ambient temperature must stay below 75°C. With proper thermal pad soldering and 2oz copper, θJA can be reduced to ≤30°C/W, enabling full-rated current in 85°C under-hood environments.
MPQ4468GL-AEC1-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 16-PowerVQFN
- 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):
- 0.8V
- Voltage - Output (Max):
- 36V
- Current - Output:
- 3.5A
- Frequency - Switching:
- 350kHz ~ 2.5MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (3x4)
MPQ4468GL-AEC1-P FAQ
1.How can I place an order for MPQ4468GL-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4468GL-AEC1-P 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 MPQ4468GL-AEC1-P reliable?
The price and inventory of MPQ4468GL-AEC1-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ4468GL-AEC1-P is usually 5 days.
3.What payment methods are accepted for MPQ4468GL-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4468GL-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4468GL-AEC1-P?
MPQ4468GL-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4468GL-AEC1-P 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 MPQ4468GL-AEC1-P?
For technical support, including MPQ4468GL-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4468GL-AEC1-P requirements.
6.How does Aetrix verify that MPQ4468GL-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MPQ4468GL-AEC1-P 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 MPQ4468GL-AEC1-P meets industry standards.
7.What is the process for return or replacement of MPQ4468GL-AEC1-P?
All MPQ4468GL-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4468GL-AEC1-P, 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 MPQ4468GL-AEC1-P part is unused and in its original packaging.
Return procedure for MPQ4468GL-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPQ4468GL-AEC1-P 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…
