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Monolithic Power Systems Inc. MPQ28164GD-Z
- Part No.:
- MPQ28164GD-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 11-VFQFN
- Datasheet:
-
MPQ28164GD-Z.pdf
- Description:
- IC REG BUCK BOOST ADJ 4.2A 11QFN
- Quantity:
- Payment:
- Shipping:
Inventory:175
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Product details
Overview
MPQ28164GD-Z from Monolithic Power Systems is a high-efficiency, single-inductor buck-boost DC/DC converter with integrated 4.2A MOSFET switches, fixed 2MHz switching frequency, 1.2V–5.5V input range, and 1.5V–5V adjustable output. It delivers up to 2A at 3.3V output from 2.5V–5.5V input and supports pulse-skipping (PSM) or forced PWM mode via MODE/SYNC pin-ideal for battery-powered portable instruments requiring seamless voltage regulation across varying cell states.
For engineers reviewing the MPQ28164GD-Z datasheet, MPQ28164GD-Z pinout, MPQ28164GD-Z application, or MPQ28164GD-Z equivalent, key selection criteria include its 2MHz fixed-frequency operation, 25μA quiescent current in PSM mode, hiccup-mode short-circuit protection, power-good indicator, and QFN-11 (2mm×3mm) thermal performance with θJA = 70°C/W.
Technical Context
The MPQ28164GD-Z implements a dual-leg, four-switch buck-boost topology with independent buck (SWA/SWB) and boost (SWC/SWD) control paths, using current-mode control and internal slope compensation. Its error amplifier generates VC-Buck and level-shifted VC-Boost signals, each compared against a shared current ramp to drive respective switch pairs.
It features automatic mode transition between buck, buck-boost, and boost regions based on VIN/VOUT ratio, with seamless boundary handling via offset injection into the current ramp during buck-boost region. UVLO thresholds (1.7V rising, 0.69V falling) and VCC-supply autonomy (powered by higher of VIN or VOUT) enable stable start-up down to 1.2V input when VCC is pre-biased.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.2V to 5.5V - supports single-cell Li-ion (2.5–4.2V) and multi-cell alkaline (1.2–4.5V) without external LDO pre-regulation. |
| Output Voltage Range | 1.5V to 5V - adjustable via external resistor divider; 3.3V/2A output achievable with 2.5–5.5V input. |
| Switching Frequency | 2MHz fixed (±15%) - enables compact 1µH inductor and low-profile ceramic capacitors; supports external sync from 1–3MHz. |
| Peak Switch Current Limit | 4.2A typical - ensures robust 2A continuous load delivery at 3.3V with margin for transient surges. |
| Quiescent Current | 25μA typical in PSM mode - extends battery runtime in standby or light-load sensor nodes. |
| Efficiency | Up to 95% - achieved via low RDS(ON) switches (22mΩ N-FET, 27.5mΩ P-FET) and optimized gate drive. |
| Thermal Protection | Hiccup-mode SCP and 160°C OTP with 20°C hysteresis - prevents thermal runaway during sustained overload or poor PCB heatsinking. |
Pinout & Package
MPQ28164GD-Z is housed in a thermally enhanced QFN-11 package (2mm × 3mm, 0.5mm pitch) with exposed thermal pad. The package supports high-power density designs and requires controlled-impedance PCB layout with multiple vias under the pad for optimal junction-to-board thermal transfer (θJC = 15°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 EN | Enable control input | Pull high (>1.2V) to activate regulator; internally pulled down (1.5MΩ); enables system-level power sequencing. |
| 2 MODE/SYNC | Mode selection & clock sync | Low = auto PSM/PWM transition; high = forced fixed-frequency PWM; accepts external 1–3MHz sync clock. |
| 3 PG | Open-drain power-good flag | Asserts high when FB ≥ 91.5% VREF (≈458mV); deasserts at ≤76% VREF (≈380mV); supports system reset or supervisor logic. |
| 4 VCC | Internal bias supply | Powered autonomously by higher of VIN or VOUT; decoupled with 1µF ceramic; enables operation below VIN UVLO if VOUT is present. |
| 5 AGND | Analog ground reference | Separate signal ground for FB, PG, MODE/SYNC; must be star-connected to PGND near IC to avoid noise coupling. |
| 6 FB | Feedback voltage sense | Monitors output via resistor divider; internal 500mV reference; sensitive node requiring short, shielded trace routing. |
| 7 VOUT | Regulated output node | High-current output path; requires low-ESR ceramic caps placed adjacent to pin and PGND for stability and ripple suppression. |
| 8 SW2 | Power switch node | Connects to one end of inductor; carries bidirectional high di/dt current; requires tight loop with PGND and input/output caps. |
| 9 PGND | Power ground return | High-current return path for SW1/SW2; must be solid copper plane with thermal vias to inner layers; separate from AGND. |
| 10 SW1 | Power switch node | Connects to opposite end of inductor; complements SW2 in 4-switch topology; shares same layout constraints as SW2. |
| 11 VIN | Main input supply | Accepts 1.2–5.5V; powers power stage; requires local 22µF ceramic cap; routed with wide copper to minimize IR drop. |
Key Features
| Feature | Design Value |
|---|---|
| Single-inductor 4-switch architecture | Eliminates need for separate buck + boost ICs or coupled inductors-reduces BOM count and board area by >40% vs. dual-converter solutions. |
| Load disconnect during shutdown | Internal FET isolates VOUT from VIN when EN = low-prevents battery drain in off-state and avoids backfeed in multi-rail systems. |
| Integrated soft-start and compensation | 1.5ms internal SS ramp prevents inrush current; eliminates need for external SS capacitor or loop compensation components. |
| Power-good (PG) with self-driving capability | PG pulls low (~0.7V) even when MPQ28164 is disabled but externally pulled up-enables accurate system power monitoring without auxiliary circuitry. |
| Hiccup-mode short-circuit protection | Enters 8ms off-cycle recovery after VOUT drops below 60% target-limits average power dissipation during fault while enabling autonomous recovery. |
Applications
| Portable Medical Sensors | Wireless IoT Endpoints |
|---|---|
|
Use Scenario: Wearable ECG patch powered by single Li-ion cell (3.0–4.2V), regulating 3.3V for MCU and analog front-end while maintaining operation as battery discharges to 2.8V. IC Role / Device Role / Timing Role: Single-stage buck-boost regulator providing uninterrupted 3.3V rail across full battery discharge curve; replaces inefficient linear regulators or discrete buck+boost combos. Use Value: Enables >20% longer runtime vs. LDO-based design and eliminates voltage brownouts during peak transmit bursts due to 2A load capability and fast transient response. |
Use Scenario: Battery-operated LoRaWAN sensor node using two AA alkaline cells (2.0–3.2V), powering 3.3V microcontroller and sub-GHz transceiver with variable duty cycle. IC Role / Device Role / Timing Role: Efficient wide-input buck-boost converter supporting PSM mode during sleep (25μA IQ) and forced PWM during active transmission to minimize RF noise. Use Value: Extends shelf life to >5 years on two AAs by minimizing no-load loss; 2MHz operation avoids interference with 868/915MHz ISM bands. |
| Industrial Handheld Scanners | USB-C Powered Accessories |
|
Use Scenario: Rugged barcode scanner with 3.7V Li-ion battery and 5V USB charging port, requiring stable 3.3V for imaging sensor and 5V for USB interface logic. IC Role / Device Role / Timing Role: Primary 3.3V rail generator with dynamic input sourcing-accepts either battery (2.5–4.2V) or USB VBUS (4.75–5.5V) without external OR-ing FETs. Use Value: Simplifies power architecture by eliminating dual-input PMIC; maintains 3.3V output within ±1% during hot-swap transitions between sources. |
Use Scenario: Compact USB-C audio adapter drawing power from host port (5V), generating clean 3.3V for DAC and 1.8V for digital logic via secondary LDO. IC Role / Device Role / Timing Role: Input-voltage-flexible buck-boost front-end that regulates 3.3V even if USB-C source sags to 4.5V under load-ensuring downstream LDO headroom. Use Value: Prevents audio dropout during high-current USB enumeration by sustaining 3.3V output down to 4.5V input with <10mV line regulation error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS63802DRLR | Lower 2A switch current limit; 1.8–5.5V input; 2.5–5.5V output; no integrated PG; 1.2MHz max frequency. | Limited to ≤1.5A continuous loads at 3.3V; lacks hiccup-mode SCP and VCC-autonomous start-up below 1.8V. | Select when cost sensitivity outweighs 4.2A headroom and PG requirement; verify thermal derating at 2A load. |
| MAX77827BEWL+T | Higher 5A switch rating; 2.5–5.5V input; 2.6–5.2V output; I²C programmable; 2.2MHz switching; no PSM mode. | Requires I²C interface and external configuration; no PSM for ultra-low-IQ operation; larger 2.1mm×2.1mm WLP package. | Choose for digitally configurable output or higher current margin; avoid if analog-only control and minimal footprint are mandatory. |
Compared with TPS63802DRLR and MAX77827BEWL+T, the MPQ28164GD-Z uniquely combines 4.2A current capability, 25μA PSM IQ, autonomous VCC sourcing, and integrated PG in a 2mm×3mm QFN-making it optimal for space-constrained, battery-life-critical portable devices needing analog simplicity and robust fault handling.
Availability
MPQ28164GD-Z is available at Aetrix Electronics and suitable for portable medical sensors, wireless IoT endpoints, and industrial handheld scanners requiring stable component supply with guaranteed long-term manufacturability and RoHS-compliant packaging.
Supply support for MPQ28164GD-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, with over two decades of innovation in DC/DC conversion, motor drivers, and LED lighting controllers.
The MPQ28164 belongs to MPS's high-efficiency, wide-input buck-boost converter product line-designed specifically for battery-powered applications where input voltage crosses the output rail and minimal solution size is critical.
FAQ
What is the minimum input voltage required to start up the MPQ28164GD-Z?
The MPQ28164GD-Z requires a minimum 1.8V input to initiate startup when VCC is unpowered. However, if VCC is pre-biased (e.g., from VOUT or external supply), it can start and operate down to 1.2V VIN-though load capability decreases due to higher P-FET RDS(ON). The VIN UVLO rising threshold is 1.7V typical.
Can the MPQ28164GD-Z regulate output voltage when input equals output (e.g., VIN = VOUT = 3.3V)?
Yes-the MPQ28164GD-Z operates seamlessly in buck-boost mode when VIN ≈ VOUT. Its four-switch topology dynamically blends buck and boost phases within each switching cycle, maintaining regulation without discontinuity or efficiency collapse at unity gain.
How does the MODE/SYNC pin affect EMI and efficiency?
When MODE/SYNC is low, the device enters pulse-skipping mode (PSM) under light load, reducing switching frequency and improving efficiency (25μA IQ) but increasing low-frequency output ripple. When high, it forces fixed 2MHz PWM-lowering ripple and EMI at harmonics above 10MHz but raising light-load power loss.
Is an external compensation network required for stable operation?
No-the MPQ28164GD-Z integrates full Type-II compensation and soft-start circuitry. Only the feedback resistor divider (R1/R2) and input/output ceramic capacitors are required. Layout best practices-especially AGND/PGND separation and FB trace isolation-are critical for stability.
What thermal derating applies when operating at 2A continuous load in a standard 4-layer PCB?
With θJA = 70°C/W and maximum junction temperature of 125°C, the MPQ28164GD-Z dissipates ~0.5W at 2A/3.3V (92% efficiency). At 25°C ambient, junction temperature rises ~35°C-well within limit. Derating begins above 90°C ambient; full 2A load is sustainable up to ~85°C ambient with recommended thermal vias under the exposed pad.
Does the MPQ28164GD-Z support output voltages below 1.5V?
No-the internal feedback reference is fixed at 500mV with ±1.5% tolerance, and the datasheet specifies a minimum output of 1.5V (3×VREF). Attempting lower outputs violates the FB voltage range and risks instability or regulation failure.
How is short-circuit protection implemented, and does it latch off?
Under short-circuit, output voltage collapses below 60% of target, triggering hiccup mode: the IC disables switching for ~8ms, then attempts soft restart. This repeats until fault clears. It does not latch permanently-no manual reset is needed, and PG asserts only during valid regulation.
MPQ28164GD-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 11-VFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck-Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.2V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- 5V
- Current - Output:
- 4.2A (Switch)
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 11-QFN (2x3)
MPQ28164GD-Z FAQ
1.How can I place an order for MPQ28164GD-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ28164GD-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 MPQ28164GD-Z reliable?
The price and inventory of MPQ28164GD-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ28164GD-Z is usually 5 days.
3.What payment methods are accepted for MPQ28164GD-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ28164GD-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ28164GD-Z?
MPQ28164GD-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ28164GD-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 MPQ28164GD-Z?
For technical support, including MPQ28164GD-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ28164GD-Z requirements.
6.How does Aetrix verify that MPQ28164GD-Z is sourced from the original manufacturer or authorized distributors?
All MPQ28164GD-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 MPQ28164GD-Z meets industry standards.
7.What is the process for return or replacement of MPQ28164GD-Z?
All MPQ28164GD-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ28164GD-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 MPQ28164GD-Z part is unused and in its original packaging.
Return procedure for MPQ28164GD-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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