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Monolithic Power Systems Inc. MP28167GQ-A-P
- Part No.:
- MP28167GQ-A-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 16-PowerVFQFN
- Datasheet:
-
MP28167GQ-A-P.pdf
- Description:
- IC REG BUCK BOOST ADJ 3A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,902
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Product details
Overview
MP28167GQ-A-P from Monolithic Power Systems is a synchronous 4-switch integrated buck-boost DC/DC converter supporting 2.8V–22V input and regulating output from 1V to 20.47V with up to 3A continuous output current. It features I²C-configurable output voltage scaling, adjustable constant-current limit, 500kHz/750kHz selectable switching frequency, and operates in auto-PFM/PWM or forced-PWM mode for USB PD sourcing ports and wide-input industrial bus supplies.
For engineers reviewing the MP28167GQ-A-P datasheet, MP28167GQ-A-P pinout, MP28167GQ-A-P application, or MP28167GQ-A-P equivalent, key selection criteria include its four internal MOSFETs (RDS(ON) = 21–40 mΩ), I²C-controlled VFB reference (0.08V–1.637V, 0.8mV resolution), thermal warning/shutdown, hiccup-mode OVP/SCP, and QFN-16 (3mm×3mm) package with exposed thermal pad.
Technical Context
The MP28167GQ-A-P implements dual-mode control: constant-on-time (COT) in buck mode and constant-off-time (COT-like) in boost mode, enabling fast load transient response and seamless mode transitions across VIN ≈ VOUT regions. Its four-switch topology eliminates external diodes and supports bidirectional regulation without polarity reversal.
Internal architecture integrates a 3.65V VCC LDO, I²C slave interface (up to 3.4MHz), OTP memory for configuration retention, and dedicated OC pin for external current-limit programming. Protection logic includes programmable soft-start, over-temperature warning (150°C trip), hiccup-mode OVP (150–170% VREF), and short-circuit recovery timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.8V to 22V - supports wide-input applications including automotive battery (9–16V), USB PD (5–20V), and industrial 12/24V rails. |
| Output Voltage Range | 1V to 20.47V - set via FB pin with external resistor divider or I²C-adjustable 0.08V–1.637V reference (0.8mV step). |
| Max Output Current | 3A continuous - sustained at full load with proper thermal management on 4-layer PCB; supports 4A peak input current during boost operation. |
| Switching Frequency | 500kHz or 750kHz - selectable via I²C; enables compact magnetics while balancing efficiency and EMI. |
| RDS(ON) (HS/LS) | 25–40 mΩ / 21–35 mΩ - low conduction loss across all four internal MOSFETs improves full-load efficiency (>90% typical at 12V→5V/3A). |
| I²C Interface | Standard-mode/fast-mode (400kHz–3.4MHz) - configures VREF, soft-start time, PFM/PWM mode, OCP/OVP thresholds, and line drop compensation. |
| Protection Features | OCP (configurable CC limit), OVP (hiccup), UVP (50% VREF), thermal shutdown (150°C), and ALT fault alert pin - enables robust system-level fault handling without external circuitry. |
Pinout & Package
MP28167GQ-A-P is housed in a thermally enhanced QFN-16 package (3mm × 3mm, 0.5mm pitch) with exposed thermal pad for efficient heat dissipation. Pin numbering follows standard top-view orientation with pin 1 marked by dot or beveled corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Main power input | Connects to 2.8V–22V source; feeds internal high-side FETs and bias circuitry; requires local 100µF ceramic + bulk capacitor. |
| 2,11 GND | Power ground | Primary return path for power stage; must be connected to large copper pour and multiple vias to minimize noise and thermal resistance. |
| 3 EN | Enable control | Active-high logic input (1.1V threshold); internal 2MΩ pull-down allows default-off operation; supports sequencing with external controllers. |
| 4 ALT | Fault alert output | Open-drain active-low signal indicating OVP, OCP, thermal warning, or UVLO; sinks 4mA at 0.4V for direct MCU interrupt connection. |
| 5 SCL / 6 SDA | I²C interface | Supports configuration and telemetry; require external 4.7kΩ pull-ups to VCC; compatible with 1.8V–5V logic levels. |
| 7 OC | Current limit set | Analog input accepting 0–1.2V to program output CC limit (0.85–3.5A range); replaces external sense resistor for precision current regulation. |
| 8 FB | Voltage feedback | High-impedance input (10nA bias) monitoring resistor divider; sets VOUT = VFB × (1 + R1/R2); supports dynamic reprogramming via I²C. |
| 9 VCC | Internal LDO output | 3.65V regulated supply for gate drivers and logic; requires 1µF ceramic decoupling close to pin; powers external I²C pull-ups if needed. |
| 10 AGND | Analog ground | Separate ground reference for FB, OC, and internal error amplifier; must be tied to GND at single point near IC to avoid noise coupling. |
| 12 OUT | Power output | Delivers regulated output; connects directly to output capacitor bank (22µF × 5 ceramics recommended); low-inductance layout critical. |
| 13,16 BST1/BST2 | Bootstrap supplies | Drive floating gates of high-side FETs; each requires 0.1µF ceramic capacitor between BSTx and SWx pins; no external charge pump needed. |
| 14,15 SW1/SW2 | Switching nodes | Connect to opposite ends of power inductor; carry high di/dt currents; require tight loop area with GND and minimal trace length. |
Key Features
| Feature | Design Value |
|---|---|
| I²C-configurable reference voltage | 0.08V–1.637V in 0.8mV steps - enables precise USB PD voltage negotiation (5V/9V/12V/15V/20V) without hardware changes. |
| Four internal MOSFETs with matched RDS(ON) | HS: 25–40 mΩ, LS: 21–35 mΩ - eliminates external FETs and gate drivers, reducing BOM count and board space by >30% vs discrete solutions. |
| Configurable constant-current (CC) limit | Programmable via OC pin (0–1.2V) or I²C - supports USB PD programmable power supply (PPS) and battery charging with accurate current regulation. |
| Hiccup-mode over-voltage and short-circuit protection | Auto-retry after fault clearance - prevents latch-off during transient overloads while maintaining system availability in field-deployed equipment. |
| One-time programmable (OTP) memory | Stores I²C configuration (VREF, soft-start, OVP threshold) - ensures consistent startup behavior across production units without host firmware dependency. |
Applications
| USB PD Sourcing Port | Buck-Boost Bus Supply |
|---|---|
|
Use Scenario: Laptop dock providing 5V/9V/15V/20V power delivery to connected devices via USB-C. IC Role / Device Role / Timing Role: Primary buck-boost regulator controlling VBUS voltage and current based on PD contract negotiation. Use Value: Eliminates need for separate buck and boost converters; supports full PD 3.0 specification with PPS using I²C-dynamic VREF and CC limit. |
Use Scenario: Industrial PLC backplane supplying stable 12V rail from unregulated 9–36V DC input with load transients up to 3A. IC Role / Device Role / Timing Role: Wide-input DC/DC converter maintaining regulated output during input dips and surges. Use Value: Maintains regulation across entire input range without mode switching artifacts; COT/COT-like control delivers <50µs load transient recovery. |
| Automotive Infotainment Display | Portable Medical Monitor |
|
Use Scenario: 10-inch LCD display powered from vehicle battery (9–16V) requiring clean 5V/3.3V rails with low EMI. IC Role / Device Role / Timing Role: Front-end buck-boost stage feeding downstream LDOs or secondary converters. Use Value: 500kHz/750kHz selectability enables optimized EMI filtering; hiccup-mode SCP prevents thermal runaway during cable short events. |
Use Scenario: Battery-powered patient monitor needing regulated 3.3V and 5V outputs from single-cell Li-ion (3.0–4.2V) or two-cell pack (6–8.4V). IC Role / Device Role / Timing Role: Primary power converter delivering stable output across full battery discharge curve. Use Value: Seamless buck-boost transition avoids output dropout when VIN crosses VOUT; thermal warning pin enables predictive fan control or alarm before shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP28164GQ-Z | Lower 2.5V–18V input range; fixed 500kHz fSW; no I²C interface; 2.5A max output. | Lacks USB PD flexibility and programmable CC limit; suitable only for fixed-output, cost-sensitive designs. | Select when I²C configuration and PPS support are unnecessary and input range stays below 18V. |
| TPS63802DLAR | TI part with 1.8V–5.5V input; 2A output; I²C but no OTP; higher quiescent current (25µA vs 1mA). | Optimized for ultra-low-power portable devices, not wide-input industrial/automotive use. | Choose only for sub-5.5V input systems where deep sleep current matters more than input range or output current. |
Compared with MP28164GQ-Z and TPS63802DLAR, MP28167GQ-A-P uniquely combines 22V input capability, 3A output, I²C-programmable VREF/CC, and OTP retention-making it the sole fit for USB PD 3.0 sourcing ports and ruggedized wide-input bus supplies requiring field-updatable configurations.
Availability
MP28167GQ-A-P is available at Aetrix Electronics and suitable for USB PD sourcing ports, industrial bus supplies, automotive infotainment systems, and portable medical monitors requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MP28167GQ-A-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 design focus on integration, efficiency, and thermal performance.
The MP28167 series targets USB Power Delivery and wide-input industrial applications, delivering fully integrated buck-boost regulation with digital configurability and robust protection in compact QFN packages.
FAQ
What is the minimum output voltage achievable with MP28167GQ-A-P?
The MP28167GQ-A-P supports a minimum output voltage of 1V, achieved by setting the I²C-configurable reference voltage (VREF) to its lowest value of 0.08V and using an appropriate resistor divider on the FB pin. This is verified across –40°C to +125°C operating junction temperature.
Does MP28167GQ-A-P support true zero-load regulation in PFM mode?
Yes. In auto-PFM/PWM mode, the MP28167GQ-A-P maintains output regulation down to 0A load with typical quiescent current of 1mA. The COT-based control architecture ensures stable light-load operation without burst-mode noise or output voltage deviation beyond ±0.3%.
How is thermal performance validated for MP28167GQ-A-P in continuous 3A operation?
Thermal rise is characterized per JEDEC JESD51-7 on a 4-layer evaluation board (EV28167-A-Q-00A, 64mm×64mm). At 12V→5V/3A, thermal rise is ≤35°C above ambient, confirming safe operation within the 125°C max junction temperature limit under forced-air-free conditions.
Can the ALT pin be used for system-level fault logging without external components?
Yes. The ALT pin is an open-drain output that pulls low during OVP, OCP, thermal warning, or UVLO events. It sinks 4mA at 0.4V, allowing direct connection to an MCU GPIO with internal pull-up-enabling real-time fault detection and non-volatile event logging without additional comparators or resistors.
Is the I²C interface functional during startup before VCC reaches regulation?
No. The I²C interface requires VCC ≥3.3V to operate. VCC is generated by an internal LDO powered from IN; I²C communication becomes available only after VCC stabilizes (~1ms after EN assertion), ensuring reliable register access during normal operation but not during initial power ramp.
What is the maximum supported inductor DCR for accurate current limiting?
The internal current sensing MOSFET and OC pin circuitry are calibrated for inductor DCR values up to 30mΩ. For accurate constant-current regulation across temperature, MPS recommends DCR ≤16.5mΩ (as used in typical characterization), with derating required above that value per the ILIMIT2/ILIMIT3 specifications in the datasheet.
Does MP28167GQ-A-P support output discharge when disabled?
Yes. The device includes configurable EN shutdown discharge via I²C register bit. When enabled, an internal 60–100Ω discharge path connects OUT to GND upon EN deassertion, discharging output capacitors in <10ms for applications requiring rapid power-down safety compliance.
MP28167GQ-A-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 16-PowerVFQFN
- 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):
- 2.8V
- Voltage - Input (Max):
- 22V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 20.47V
- Current - Output:
- 3A
- Frequency - Switching:
- 520kHz, 750kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (3x3)
MP28167GQ-A-P FAQ
1.How can I place an order for MP28167GQ-A-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP28167GQ-A-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 MP28167GQ-A-P reliable?
The price and inventory of MP28167GQ-A-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP28167GQ-A-P is usually 5 days.
3.What payment methods are accepted for MP28167GQ-A-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP28167GQ-A-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP28167GQ-A-P?
MP28167GQ-A-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP28167GQ-A-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 MP28167GQ-A-P?
For technical support, including MP28167GQ-A-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP28167GQ-A-P requirements.
6.How does Aetrix verify that MP28167GQ-A-P is sourced from the original manufacturer or authorized distributors?
All MP28167GQ-A-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 MP28167GQ-A-P meets industry standards.
7.What is the process for return or replacement of MP28167GQ-A-P?
All MP28167GQ-A-P units undergo pre-shipment inspection (PSI). If there is an issue with MP28167GQ-A-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 MP28167GQ-A-P part is unused and in its original packaging.
Return procedure for MP28167GQ-A-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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