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Monolithic Power Systems Inc. MP5402MGR-Z
- Part No.:
- MP5402MGR-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 26-PowerVFQFN
- Datasheet:
-
MP5402MGR-Z.pdf
- Description:
- IC REG BUCK 5V 5A 26QFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MP5402MGR-Z from Monolithic Power Systems is a monolithic 5A, 36V synchronous step-down converter with integrated dual USB current-limit switches and BC1.2-compliant charging port identification. It delivers fixed 5V output with programmable line drop compensation, supports 350/250/150kHz selectable switching frequency, and provides ±8kV HBM ESD protection on USB DP/DM pins. It is designed for automotive cigarette lighter adapters requiring robust dual-port USB charging.
For engineers reviewing the MP5402MGR-Z datasheet, MP5402MGR-Z pinout, MP5402MGR-Z application, or MP5402MGR-Z equivalent, key selection criteria include its dual-USB auto-detection capability (DCP/divider/1.2V mode), hiccup-mode overcurrent protection, thermal shutdown at 165°C, and QFN-26 package thermal performance under 5A load.
Technical Context
The MP5402MGR-Z integrates a peak-current-mode controlled buck regulator with internal 40mΩ/32mΩ HS/LS MOSFETs and two independent USB power switches with 24mΩ RDS(ON). Its auto-detection state machine implements BC1.2 DCP, divider, and 1.2V/1.2V handshaking without external components.
Line drop compensation is dynamically adjusted using the larger of the two USB current-sense outputs, while output OVP (6.0V trip) and hiccup-mode recovery (8.5s off time) provide fault resilience. The bootstrap driver maintains VBST–VSW ≤ 5V via internal regulation, and EN features 7.6V Zener clamping with 1MΩ pull-down.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input voltage range | 7V to 36V - supports 12V/24V automotive systems with 40V absolute max rating |
| Output voltage | Fixed 5.05V ±1% - includes programmable line drop compensation up to 500mV at 2.4A |
| Continuous output current | 5A - delivered by internal synchronous rectifier with 40mΩ/32mΩ RDS(ON) |
| USB current limit | 2.75A per port - foldback to 70% during overcurrent, with 3ms hiccup trigger delay |
| Switching frequency | 150/250/350kHz - selected via FREQ pin logic level (GND/5V/floating) |
| Thermal shutdown | 165°C with 20°C hysteresis - ensures safe operation under sustained 5A load in QFN-26 |
| ESD rating | ±8kV HBM on USB DP/DM pins - eliminates need for external TVS diodes in charging ports |
Pinout & Package
MP5402MGR-Z is housed in a thermally enhanced QFN-26 (4mm × 4mm) package with exposed thermal pad. Pin 1 is marked by a dot; top-side marking includes MPS prefix, year/week code, and product code M5402M.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | USB1 output | Power output for first USB port; includes current limiting and auto-detection circuitry |
| 3, 15, 25 | OUT | Buck converter output node; supplies regulated 5V to both USB ports and serves as feedback reference |
| 4, 14 | IN | Main input supply (7–36V); powers internal circuitry and high-side switch drain |
| 5, 6, 12, 13 | PGND | Power ground return for buck converter and USB switches; requires low-impedance PCB plane |
| 7 | FREQ | Frequency select: GND = 250kHz, 5V = 350kHz, floating = 150kHz |
| 8 | EN | Enable control with 1.43V rising threshold and 7.6V Zener clamp; 1MΩ internal pull-down |
| 9, 10, 26 | SW | Switch node connecting internal HS/LS MOSFETs; requires wide copper trace and low-inductance layout |
| 11 | BST | Bootstrap capacitor connection (0.1μF) for high-side gate driver; regulated to ≤5V above SW |
| 16, 17 | USB2 | Power output for second USB port; functionally identical to USB1 with independent current sensing |
| 18 | AGND | Analog ground; must be connected to PGND at single point to avoid noise coupling into error amplifier |
| 19 | VCC | Internal 5V LDO output (4.75–5.45V); powers control logic and requires 0.22μF ceramic decoupling |
| 20 | VDROP | Line drop compensation selection: GND = 130mV, mid-level = 400mV, high-level = 500mV at 2.4A |
| 21, 24 | DM1, DM2 | D− data lines for USB1/USB2 port detection; support BC1.2 handshake and 1.2V/1.2V mode |
| 22, 23 | DP1, DP2 | D+ data lines for USB1/USB2 port detection; enable divider mode (2.7V) and DCP short-resistance sensing |
Key Features
| Feature | Design Value |
|---|---|
| EMI reduction technique | Integrated frequency dithering and optimized switching edge control reduce conducted emissions without external filters |
| Smart USB port identification | On-chip state machine detects BC1.2 DCP, YD/T 1591 divider, and 1.2V/1.2V modes-no external ID resistors required |
| Programmable line drop compensation | Three-level VDROP pin setting adjusts compensation amplitude (130/400/500mV) to maintain 5V at cable end under varying trace resistance |
| Dynamic USB OVP | OVP threshold scales with load current to ensure terminal voltage stays within 4.75–5.25V across all cable lengths and loads |
| Hiccup-mode overcurrent protection | 8.5s off-time during sustained overload limits average power dissipation and prevents thermal runaway during short-circuit events |
| Thermal shutdown with hysteresis | 165°C trip with 20°C hysteresis ensures reliable recovery after transient overheating without oscillation |
Applications
| Automotive Cigarette Lighter Adapters | Industrial Dual-Port Charging Stations |
|---|---|
|
Use Scenario: 12V/24V vehicle power source converted to dual 5V/2.4A USB outputs for simultaneous smartphone and tablet charging. IC Role / Device Role / Timing Role: Primary DC-DC regulator and USB port controller; manages buck conversion, current limiting, and BC1.2 handshaking autonomously. Use Value: Eliminates need for discrete USB ID ICs and external current-sense amplifiers, reducing BOM count by ≥4 components per port. |
Use Scenario: DIN-rail mounted charging hub powering medical tablets and handheld scanners in hospital corridors with stable 5V delivery. IC Role / Device Role / Timing Role: Dual-channel power manager with intelligent line drop compensation ensuring ±2% output regulation across 2m cable runs. Use Value: Maintains 4.95–5.15V at load terminals despite 300mΩ total trace + connector resistance, meeting IEC 60601 safety margins. |
| Smart Retail Kiosk Chargers | Commercial Fleet Telematics Terminals |
|
Use Scenario: Wall-mounted kiosk providing fast-charging USB ports for customer devices in airports and shopping malls. IC Role / Device Role / Timing Role: Integrated power delivery IC handling input UVLO (5.7V), thermal shutdown (165°C), and USB enumeration without host MCU intervention. Use Value: Enables zero-firmware charging solution-ports identify Apple, Samsung, and legacy devices automatically upon plug-in. |
Use Scenario: In-vehicle telematics unit supplying power to GPS tracker and LTE modem via separate USB ports with independent fault isolation. IC Role / Device Role / Timing Role: Fault-tolerant dual-port PMIC with hiccup-mode OCP per channel preventing single-port failure from disabling entire system. Use Value: Sustains operation of critical LTE modem (USB2) even if smartphone (USB1) draws excessive current or shorts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-USB charging port applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP5412GQ-A | Higher 6A output, 40V max input, but no integrated USB detection-requires external BC1.2 IC | Lacks auto-detection; suitable only when external ID logic is already present | Select when higher current headroom is needed and system already implements USB ID via MCU or dedicated IC |
| TPS65987D | USB-C PD controller with 5V/3A buck, supports USB-C negotiation but no BC1.2 DCP or 1.2V/1.2V mode | Designed for USB-C ecosystems only; incompatible with legacy micro-USB DCP devices | Choose only for new USB-C designs requiring programmable power delivery, not for universal DCP compatibility |
Compared with MP5402MGR-Z, MP5412GQ-A trades integrated USB intelligence for higher current capability, while TPS65987D replaces BC1.2 versatility with USB-C PD protocol compliance-neither matches the seamless legacy device support and minimal BOM advantage of the MP5402MGR-Z.
Availability
MP5402MGR-Z is available at Aetrix Electronics and suitable for automotive accessory design, industrial dual-port charging stations, and smart retail kiosk development requiring stable component supply and long-term lifecycle assurance.
Supply support for MP5402MGR-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 battery management.
The MP5402M product line targets compact, high-reliability USB charging solutions for automotive and industrial environments where integration, thermal robustness, and BC1.2 compliance are mandatory.
FAQ
What is the maximum continuous output current supported by MP5402MGR-Z?
The MP5402MGR-Z delivers 5A continuous output current from its integrated synchronous buck converter. This rating assumes proper PCB thermal design with the QFN-26 package's exposed pad soldered to a ≥4 cm² copper area and ambient temperature ≤60°C. Derating applies above 85°C junction temperature.
Does MP5402MGR-Z require external components for USB BC1.2 detection?
No. MP5402MGR-Z integrates a complete BC1.2 detection state machine supporting DCP, divider, and 1.2V/1.2V modes. No external resistors, ID switches, or microcontrollers are needed-the DP1/DM1 and DP2/DM2 pins connect directly to USB connectors for full auto-detection.
How does the line drop compensation function work on MP5402MGR-Z?
MP5402MGR-Z measures current through each USB port and uses the larger sensed value to adjust output voltage upward-by 130mV, 400mV, or 500mV depending on VDROP pin voltage-compensating for IR drop across cables and PCB traces to maintain 5V at the device end.
What protection features are included in MP5402MGR-Z?
MP5402MGR-Z includes hiccup-mode overcurrent protection (8.5s off-time), output overvoltage protection (6.0V trip), thermal shutdown (165°C), input UVLO (5.7V rising), and ±8kV HBM ESD protection on all USB data pins-providing comprehensive fault resilience without external components.
Can MP5402MGR-Z operate with input voltage below 7V?
No. The absolute minimum operating input voltage is 7V, with UVLO rising threshold at 5.7V and falling threshold at 4.7V. Operation below 7V violates recommended conditions and may cause unstable regulation or failure to start-designs must ensure VIN remains ≥7V during all operational states.
What is the purpose of the BST pin on MP5402MGR-Z?
The BST pin connects to a 0.1μF ceramic capacitor between BST and SW to generate a floating supply for the high-side gate driver. Internal regulation holds VBST–VSW ≤ 5V, enabling reliable 100% duty-cycle operation and eliminating need for external bootstrap diode or charge pump.
Is MP5402MGR-Z RoHS and halogen-free compliant?
Yes. MP5402MGR-Z is lead-free, halogen-free, and fully compliant with EU RoHS Directive 2011/65/EU. Full green status documentation, including material declarations and test reports, is available on the Monolithic Power Systems website under Quality Assurance.
MP5402MGR-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 26-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 7V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 5A
- Frequency - Switching:
- 350kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 26-QFN (4x4)
MP5402MGR-Z FAQ
1.How can I place an order for MP5402MGR-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP5402MGR-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 MP5402MGR-Z reliable?
The price and inventory of MP5402MGR-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP5402MGR-Z is usually 5 days.
3.What payment methods are accepted for MP5402MGR-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP5402MGR-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP5402MGR-Z?
MP5402MGR-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP5402MGR-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 MP5402MGR-Z?
For technical support, including MP5402MGR-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP5402MGR-Z requirements.
6.How does Aetrix verify that MP5402MGR-Z is sourced from the original manufacturer or authorized distributors?
All MP5402MGR-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 MP5402MGR-Z meets industry standards.
7.What is the process for return or replacement of MP5402MGR-Z?
All MP5402MGR-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP5402MGR-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 MP5402MGR-Z part is unused and in its original packaging.
Return procedure for MP5402MGR-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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