My Inquiry
My Account
Monolithic Power Systems Inc. MPQ4576GQBE-Z
- Part No.:
- MPQ4576GQBE-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 12-VFQFN
- Datasheet:
-
MPQ4576GQBE-Z.pdf
- Description:
- IC REG BUCK ADJ 600MA 12QFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MPQ4576GQBE-Z from Monolithic Power Systems is a fully integrated, AEC-Q100 qualified synchronous buck converter delivering up to 600mA continuous output current with 4.5V–60V input range, 0.8V feedback reference, and integrated high-side/low-side MOSFETs. It operates in advanced asynchronous mode (AAM) or forced continuous conduction mode (FCCM), supports cold-crank down to 4V, and features power good (PG), clock sync output, and internal compensation - deployed in automotive infotainment and LED lamp power rails.
For engineers reviewing the MPQ4576GQBE-Z datasheet, MPQ4576GQBE-Z pinout, MPQ4576GQBE-Z application, or MPQ4576GQBE-Z equivalent, key selection criteria include its 60V automotive-grade input tolerance, 2μA shutdown quiescent current, QFN-12 wettable flank package, valley-current OCP, and configurable switching frequency via external resistor on FREQ pin.
Technical Context
The MPQ4576GQBE-Z employs peak-current-mode control with valley-current over-current protection and zero-current detection for light-load efficiency optimization. Its internal 0.8V reference error amplifier interfaces directly with an external resistor divider on FB, while PG monitors output regulation within ±10% (rising) and ±16% (falling) of nominal VOUT.
Switching frequency is resistor-programmable from 300kHz to 2.2MHz via the FREQ pin; CCM/SYNCO enables FCCM forcing or 180° out-of-phase clock synchronization. The device integrates bootstrap (BST), switch (SW), enable (EN), and thermal shutdown with 170°C trip and 25°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 60V - supports 12V/24V/36V automotive systems including load dump (65V) and cold crank (4V). |
| Output Current | 600mA continuous - sufficient for powering microcontrollers, sensors, and LED drivers in compact automotive modules. |
| Feedback Reference | 0.800V ±1% - enables precise output regulation across temperature; used by PG and UVLO circuits. |
| Quiescent Current | 40µA in standby, 2µA in shutdown - extends battery life in always-on vehicle subsystems. |
| Switching Frequency | 300kHz–2.2MHz (resistor-programmable) - allows EMI tuning and inductor size optimization. |
| Thermal Protection | 170°C shutdown with 25°C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
| Protection Features | Hiccup-mode SCP, valley-current OCP, input UVLO (4.0V rising), BST-SW UVLO (1.4V), and auto-recovery thermal shutdown. |
Pinout & Package
MPQ4576GQBE-Z is housed in a wettable flank QFN-12 package (2.5mm × 3mm, 0.5mm pitch) with exposed thermal pad for enhanced heat dissipation in space-constrained automotive PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 BST | Bootstrap supply | Connects capacitor between SW and BST to bias high-side gate driver; requires low-ESR ceramic capacitor ≥0.1µF. |
| 2 SW | Power switch node | High-frequency switching output; demands wide copper pour and minimized loop area to reduce EMI and voltage spikes. |
| 3 PG | Power good indicator | Open-drain output pulled low if VOUT falls below 84% or exceeds 116% of nominal; requires external pull-up. |
| 4 FB | Feedback input | Connects to resistor divider tap; internal 0.8V reference sets output voltage as VOUT = 0.8V × (1 + R1/R2). |
| 5 FREQ | Frequency programming | Resistor-to-GND sets fSW: 76.8kΩ → 400kHz, 28kΩ → 1MHz, 12.1kΩ → 2.2MHz. |
| 6 VCC | Bias supply | Internal LDO output; requires ≥1µF ceramic decoupling capacitor placed adjacent to pin. |
| 7 GND | Ground reference | Common return for power and signal; must connect to large copper plane under thermal pad. |
| 8 IN | Main input supply | Accepts 4.5V–60V; requires local ceramic decoupling (≥10µF) near pin to suppress transients. |
| 9,10 NC | No connection | May be tied to GND to improve thermal performance and reduce EMI radiation. |
| 11 CCM/SYNCO | Mode select / sync output | Pull to GND via 10kΩ–300kΩ for FCCM; floating enables AAM; outputs 180° phase-inverted clock when active. |
| 12 EN | Enable control | Active-high logic: >1.45V turns on; <1.12V shuts down; 330mV hysteresis prevents chatter near threshold. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high- and low-side MOSFETs | RDS(ON)-H = 250mΩ typ., RDS(ON)-L = 45mΩ typ. - eliminates external Schottky diode and reduces BOM count. |
| Advanced Asynchronous Mode (AAM) | Frequency scaling under light load - maintains >85% efficiency at 1mA output while reducing gate and switching losses. |
| MeshConnect™ flip-chip packaging | Reduces parasitic inductance and improves thermal resistance (θJC = 11°C/W) - critical for EMI compliance in CISPR25 Class 5. |
| Low-dropout mode | Supports operation down to VIN = 4V at full load - ensures functionality during automotive cold-crank events. |
| Internal soft-start | 450µs ramp time - limits inrush current and prevents output overshoot during power-up. |
Applications
| Automotive Infotainment | Automotive LED Lamps |
|---|---|
|
Use Scenario: Powering display controllers, audio DSPs, and USB-C PD interface ICs in head units and digital clusters. IC Role / Device Role / Timing Role: Primary 5V/3.3V point-of-load regulator with PG monitoring for system sequencing and fault reporting. Use Value: AEC-Q100 qualification and 60V input tolerance ensure reliability during load dump; 40µA quiescent current minimizes battery drain in parked mode. |
Use Scenario: Driving interior ambient lighting, dashboard backlighting, and exterior position lamps requiring stable DC voltage. IC Role / Device Role / Timing Role: Constant-voltage buck stage feeding constant-current LED drivers or directly powering low-power LEDs. Use Value: Low-noise MeshConnect packaging meets CISPR25 Class 5 radiated emissions limits; hiccup-mode SCP prevents thermal runaway during LED short circuits. |
| Automotive Motor Control | Industrial Power Systems |
|
Use Scenario: Supplying gate drivers, position sensors, and MCU peripherals in seat/mirror/window actuator modules. IC Role / Device Role / Timing Role: Secondary rail generator stepping down 12V/24V battery to 5V/3.3V for logic and analog circuitry. Use Value: Cold-crank support (VIN down to 4V) guarantees uninterrupted operation during engine start; valley-current OCP avoids false trips during motor startup surges. |
Use Scenario: Providing isolated auxiliary power in industrial HMIs, PLC I/O modules, and railway signaling equipment. IC Role / Device Role / Timing Role: Robust front-end DC-DC converter accepting wide-input industrial supplies (e.g., 24V–60V PoE++ or 48V telecom rails). Use Value: QFN-12 wettable flank package enables automated optical inspection (AOI); internal compensation simplifies layout and reduces validation time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4570GQ-AEC1 | Lower 400mA output current, identical 4.5V–60V input, same QFN-12 package but non-wettable flank. | Suitable for lower-power sensor nodes or legacy designs where 600mA headroom is unnecessary. | Select when cost sensitivity outweighs need for 600mA margin or AOI compatibility. |
| TPS54360BQPWPRQ1 | 600mA, 3.5V–60V input, external MOSFETs required, no integrated BST capacitor path, higher IQ (14µA typical). | Used where design flexibility (e.g., custom FET selection) or TI ecosystem integration is prioritized. | Choose only if external FET control, adjustable slope compensation, or TI-specific toolchain support is mandatory. |
Compared with MPQ4576GQBE-Z, MPQ4570GQ-AEC1 trades output current and AOI capability for lower unit cost, while TPS54360BQPWPRQ1 sacrifices integration and quiescent current for configurability - making MPQ4576GQBE-Z optimal for space-, EMI-, and battery-life-constrained automotive modules.
Availability
MPQ4576GQBE-Z is available at Aetrix Electronics and suitable for automotive infotainment, LED lighting, and motor control applications requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for MPQ4576GQBE-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 power management ICs for automotive, industrial, and consumer markets.
The MPQ4576 belongs to MPS's AEC-Q100 qualified automotive DC-DC converter product line, designed specifically for harsh-environment step-down regulation in infotainment, lighting, and body electronics.
FAQ
What is the minimum input voltage for MPQ4576GQBE-Z during cold-crank conditions?
The MPQ4576GQBE-Z supports input voltages as low as 4.0V during cold-crank events, enabled by its low-dropout mode and robust UVLO hysteresis (500mV). This ensures uninterrupted operation when vehicle battery voltage dips during engine cranking, without requiring external boost assist circuitry.
Can MPQ4576GQBE-Z synchronize to an external clock?
No - MPQ4576GQBE-Z does not accept external clock input. However, its CCM/SYNCO pin provides a 180° out-of-phase clock output that can synchronize other compatible converters, enabling interleaved operation to reduce input/output ripple and EMI.
How is the power good (PG) signal asserted and deasserted?
PG is an open-drain output pulled low when VOUT falls below 84% or rises above 116% of the nominal regulated voltage. It asserts high (via external pull-up) when VOUT remains within 90%–108% of nominal, with 70µs rise and 25µs fall delay - enabling reliable system power sequencing.
Does MPQ4576GQBE-Z require an external bootstrap capacitor?
Yes - a ceramic capacitor (≥0.1µF, X7R, 16V rating) must be placed between BST and SW pins to supply the high-side gate driver. This capacitor is charged during the low-side conduction phase and is essential for proper high-side FET turn-on.
What is the thermal performance of MPQ4576GQBE-Z on a standard 4-layer PCB?
On an MPS EVB (8.9cm × 8.9cm, 2oz copper, 4-layer), θJA is 45°C/W. With proper thermal pad soldering and 2–4 thermal vias to inner ground planes, junction temperature rise stays below 8°C at 600mA/400kHz - enabling full-load operation without heatsink in most automotive enclosures.
Is the MPQ4576GQBE-Z RoHS and halogen-free compliant?
Yes - MPQ4576GQBE-Z is lead-free, halogen-free, and fully compliant with the EU RoHS directive. MPS confirms green status per its Quality Assurance documentation, and the device meets JESD204B and JEDEC MSL Level 1 moisture sensitivity requirements.
How does the advanced asynchronous mode (AAM) improve light-load efficiency?
AAM dynamically scales switching frequency downward under light load, reducing both switching losses (proportional to fSW) and gate driver losses (proportional to fSW × Qg). At 1mA load, this extends efficiency above 85%, significantly improving battery runtime versus fixed-frequency operation.
MPQ4576GQBE-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 12-VFQFN
- 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):
- 4.5V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 54V
- Current - Output:
- 600mA
- Frequency - Switching:
- 400kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 12-QFN (2.5x3)
MPQ4576GQBE-Z FAQ
1.How can I place an order for MPQ4576GQBE-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4576GQBE-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 MPQ4576GQBE-Z reliable?
The price and inventory of MPQ4576GQBE-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ4576GQBE-Z is usually 5 days.
3.What payment methods are accepted for MPQ4576GQBE-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4576GQBE-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4576GQBE-Z?
MPQ4576GQBE-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4576GQBE-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 MPQ4576GQBE-Z?
For technical support, including MPQ4576GQBE-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4576GQBE-Z requirements.
6.How does Aetrix verify that MPQ4576GQBE-Z is sourced from the original manufacturer or authorized distributors?
All MPQ4576GQBE-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 MPQ4576GQBE-Z meets industry standards.
7.What is the process for return or replacement of MPQ4576GQBE-Z?
All MPQ4576GQBE-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4576GQBE-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 MPQ4576GQBE-Z part is unused and in its original packaging.
Return procedure for MPQ4576GQBE-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPQ4576GQBE-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…
